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Pontón, Patricia I.

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  • Pontón, Patricia I. (9)

Author's Bibliography

Supplementary Material: Visible light sensitive mesoporous nanohybrids of lepidocrocite-like ferrititanate coupled to a charge transfer complex: Synthesis, characterization and photocatalytic degradation of NO

Habran, Margarita; Pontón, Patricia I.; Mančić, Lidija; Pandoli, Omar; Krambrock, Klaus; Maia da Costa, Marcelo Eduardo Huguenin; Letichevsky, Sonia; Costa, Antonio Mario Leal Martins; Morgado, Edisson; Marinković, Bojan A.

(2018)

TY  - BOOK
AU  - Habran, Margarita
AU  - Pontón, Patricia I.
AU  - Mančić, Lidija
AU  - Pandoli, Omar
AU  - Krambrock, Klaus
AU  - Maia da Costa, Marcelo Eduardo Huguenin
AU  - Letichevsky, Sonia
AU  - Costa, Antonio Mario Leal Martins
AU  - Morgado, Edisson
AU  - Marinković, Bojan A.
PY  - 2018
UR  - http://dais.sanu.ac.rs/123456789/3758
T2  - Journal of Photochemistry and Photobiology A: Chemistry
T1  - Supplementary Material: Visible light sensitive mesoporous nanohybrids of lepidocrocite-like ferrititanate coupled to a charge transfer complex: Synthesis, characterization and photocatalytic degradation of NO
VL  - 365
ER  - 
@book{
author = "Habran, Margarita and Pontón, Patricia I. and Mančić, Lidija and Pandoli, Omar and Krambrock, Klaus and Maia da Costa, Marcelo Eduardo Huguenin and Letichevsky, Sonia and Costa, Antonio Mario Leal Martins and Morgado, Edisson and Marinković, Bojan A.",
year = "2018",
url = "http://dais.sanu.ac.rs/123456789/3758",
journal = "Journal of Photochemistry and Photobiology A: Chemistry",
title = "Supplementary Material: Visible light sensitive mesoporous nanohybrids of lepidocrocite-like ferrititanate coupled to a charge transfer complex: Synthesis, characterization and photocatalytic degradation of NO",
volume = "365"
}
Habran, M., Pontón, P. I., Mančić, L., Pandoli, O., Krambrock, K., Maia da Costa, M. E. H., Letichevsky, S., Costa, A. M. L. M., Morgado, E.,& Marinković, B. A. (2018). Supplementary Material: Visible light sensitive mesoporous nanohybrids of lepidocrocite-like ferrititanate coupled to a charge transfer complex: Synthesis, characterization and photocatalytic degradation of NO.
Journal of Photochemistry and Photobiology A: Chemistry, 365.
Habran M, Pontón PI, Mančić L, Pandoli O, Krambrock K, Maia da Costa MEH, Letichevsky S, Costa AMLM, Morgado E, Marinković BA. Supplementary Material: Visible light sensitive mesoporous nanohybrids of lepidocrocite-like ferrititanate coupled to a charge transfer complex: Synthesis, characterization and photocatalytic degradation of NO. Journal of Photochemistry and Photobiology A: Chemistry. 2018;365
Habran Margarita, Pontón Patricia I., Mančić Lidija, Pandoli Omar, Krambrock Klaus, Maia da Costa Marcelo Eduardo Huguenin, Letichevsky Sonia, Costa Antonio Mario Leal Martins, Morgado Edisson, Marinković Bojan A., "Supplementary Material: Visible light sensitive mesoporous nanohybrids of lepidocrocite-like ferrititanate coupled to a charge transfer complex: Synthesis, characterization and photocatalytic degradation of NO" 365 (2018)

Visible light sensitive mesoporous nanohybrids of lepidocrocite-like ferrititanate coupled to a charge transfer complex: Synthesis, characterization and photocatalytic degradation of NO

Habran, Margarita; Pontón, Patricia I.; Mančić, Lidija; Pandoli, Omar; Krambrock, Klaus; Maia da Costa, Marcelo Eduardo Huguenin; Letichevsky, Sonia; Costa, Antonio Mario Leal Martins; Morgado, Edisson Jr.; Marinković, Bojan A.

(Elsevier, 2018)

TY  - JOUR
AU  - Habran, Margarita
AU  - Pontón, Patricia I.
AU  - Mančić, Lidija
AU  - Pandoli, Omar
AU  - Krambrock, Klaus
AU  - Maia da Costa, Marcelo Eduardo Huguenin
AU  - Letichevsky, Sonia
AU  - Costa, Antonio Mario Leal Martins
AU  - Morgado, Edisson Jr.
AU  - Marinković, Bojan A.
PY  - 2018
UR  - http://dais.sanu.ac.rs/123456789/3692
AB  - The efficiency of photo-oxidation of pollutants catalysed by semiconductors is still limited for real-world applications due to several drawbacks, such as a) insufficient absorption of visible radiation, which predominates in solar spectrum, b) rapid free electron to hole recombination, c) small surface area, built from equilibrium crystallographic facets with low adsorption capacities and d) photo-corrosion. The present study disclosures new mesoporous heterostructures, built from exfoliated lepidocrocite-like ferrititanates and TiO2 (anatase)-acetylacetone charge transfer complex, capable of reducing free electron-to-hole recombination rate through a robust charge separation and sensitive to the visible light spectrum. The synthesis route is based on soft-chemistry and low temperature calcination at 300 °C. Two different partially pillarized heterostructures, denoted as HM-1 and HM-2, have been synthesized. It was observed that the heterostructure HM-1 was four times more active toward photocatalytic degradation of NO gas in comparison to the benchmark photocatalytic material P25. The lower activity of the heterostructure HM-2, comparable to that of P-25, was attributed to the high value of Urbach energy that indicates high number of defect sites within energy band-gap of the constituent semiconductor components. [Ti] anatase/[Ti] ferrititanate mol ratio might also play a role in photocatalytic efficiency. © 2018 Elsevier B.V.
PB  - Elsevier
T2  - Journal of Photochemistry and Photobiology A: Chemistry
T1  - Visible light sensitive mesoporous nanohybrids of lepidocrocite-like ferrititanate coupled to a charge transfer complex: Synthesis, characterization and photocatalytic degradation of NO
SP  - 133
EP  - 144
VL  - 365
DO  - 10.1016/j.jphotochem.2018.07.038
ER  - 
@article{
author = "Habran, Margarita and Pontón, Patricia I. and Mančić, Lidija and Pandoli, Omar and Krambrock, Klaus and Maia da Costa, Marcelo Eduardo Huguenin and Letichevsky, Sonia and Costa, Antonio Mario Leal Martins and Morgado, Edisson Jr. and Marinković, Bojan A.",
year = "2018",
url = "http://dais.sanu.ac.rs/123456789/3692",
abstract = "The efficiency of photo-oxidation of pollutants catalysed by semiconductors is still limited for real-world applications due to several drawbacks, such as a) insufficient absorption of visible radiation, which predominates in solar spectrum, b) rapid free electron to hole recombination, c) small surface area, built from equilibrium crystallographic facets with low adsorption capacities and d) photo-corrosion. The present study disclosures new mesoporous heterostructures, built from exfoliated lepidocrocite-like ferrititanates and TiO2 (anatase)-acetylacetone charge transfer complex, capable of reducing free electron-to-hole recombination rate through a robust charge separation and sensitive to the visible light spectrum. The synthesis route is based on soft-chemistry and low temperature calcination at 300 °C. Two different partially pillarized heterostructures, denoted as HM-1 and HM-2, have been synthesized. It was observed that the heterostructure HM-1 was four times more active toward photocatalytic degradation of NO gas in comparison to the benchmark photocatalytic material P25. The lower activity of the heterostructure HM-2, comparable to that of P-25, was attributed to the high value of Urbach energy that indicates high number of defect sites within energy band-gap of the constituent semiconductor components. [Ti] anatase/[Ti] ferrititanate mol ratio might also play a role in photocatalytic efficiency. © 2018 Elsevier B.V.",
publisher = "Elsevier",
journal = "Journal of Photochemistry and Photobiology A: Chemistry",
title = "Visible light sensitive mesoporous nanohybrids of lepidocrocite-like ferrititanate coupled to a charge transfer complex: Synthesis, characterization and photocatalytic degradation of NO",
pages = "133-144",
volume = "365",
doi = "10.1016/j.jphotochem.2018.07.038"
}
Habran, M., Pontón, P. I., Mančić, L., Pandoli, O., Krambrock, K., Maia da Costa, M. E. H., Letichevsky, S., Costa, A. M. L. M., Morgado, E. Jr.,& Marinković, B. A. (2018). Visible light sensitive mesoporous nanohybrids of lepidocrocite-like ferrititanate coupled to a charge transfer complex: Synthesis, characterization and photocatalytic degradation of NO.
Journal of Photochemistry and Photobiology A: ChemistryElsevier., 365, 133-144.
https://doi.org/10.1016/j.jphotochem.2018.07.038
Habran M, Pontón PI, Mančić L, Pandoli O, Krambrock K, Maia da Costa MEH, Letichevsky S, Costa AMLM, Morgado EJ, Marinković BA. Visible light sensitive mesoporous nanohybrids of lepidocrocite-like ferrititanate coupled to a charge transfer complex: Synthesis, characterization and photocatalytic degradation of NO. Journal of Photochemistry and Photobiology A: Chemistry. 2018;365:133-144
Habran Margarita, Pontón Patricia I., Mančić Lidija, Pandoli Omar, Krambrock Klaus, Maia da Costa Marcelo Eduardo Huguenin, Letichevsky Sonia, Costa Antonio Mario Leal Martins, Morgado Edisson Jr., Marinković Bojan A., "Visible light sensitive mesoporous nanohybrids of lepidocrocite-like ferrititanate coupled to a charge transfer complex: Synthesis, characterization and photocatalytic degradation of NO" 365 (2018):133-144,
https://doi.org/10.1016/j.jphotochem.2018.07.038 .
2
1
2

Visible light sensitive mesoporous nanohybrids of lepidocrocite-like ferrititanate coupled to a charge transfer complex: Synthesis, characterization and photocatalytic degradation of NO

Habran, Margarita; Pontón, Patricia I.; Mančić, Lidija; Pandoli, Omar; Krambrock, Klaus; Maia da Costa, Marcelo Eduardo Huguenin; Letichevsky, Sonia; Costa, Antonio Mario Leal Martins; Morgado, Edisson Jr; Marinković, Bojan A.

(Elsevier, 2018)

TY  - JOUR
AU  - Habran, Margarita
AU  - Pontón, Patricia I.
AU  - Mančić, Lidija
AU  - Pandoli, Omar
AU  - Krambrock, Klaus
AU  - Maia da Costa, Marcelo Eduardo Huguenin
AU  - Letichevsky, Sonia
AU  - Costa, Antonio Mario Leal Martins
AU  - Morgado, Edisson Jr
AU  - Marinković, Bojan A.
PY  - 2018
UR  - http://dais.sanu.ac.rs/123456789/4084
AB  - The efficiency of photo-oxidation of pollutants catalysed by semiconductors is still limited for real-world applications due to several drawbacks, such as a) insufficient absorption of visible radiation, which predominates in solar spectrum, b) rapid free electron to hole recombination, c) small surface area, built from equilibrium crystallographic facets with low adsorption capacities and d) photo-corrosion. The present study disclosures new mesoporous heterostructures, built from exfoliated lepidocrocite-like ferrititanates and TiO2 (anatase)-acetylacetone charge transfer complex, capable of reducing free electron-to-hole recombination rate through a robust charge separation and sensitive to the visible light spectrum. The synthesis route is based on soft-chemistry and low temperature calcination at 300 °C. Two different partially pillarized heterostructures, denoted as HM-1 and HM-2, have been synthesized. It was observed that the heterostructure HM-1 was four times more active toward photocatalytic degradation of NO gas in comparison to the benchmark photocatalytic material P25. The lower activity of the heterostructure HM-2, comparable to that of P-25, was attributed to the high value of Urbach energy that indicates high number of defect sites within energy band-gap of the constituent semiconductor components. [Ti] anatase/[Ti] ferrititanate mol ratio might also play a role in photocatalytic efficiency. © 2018 Elsevier B.V.
PB  - Elsevier
T2  - Journal of Photochemistry and Photobiology A: Chemistry
T1  - Visible light sensitive mesoporous nanohybrids of lepidocrocite-like ferrititanate coupled to a charge transfer complex: Synthesis, characterization and photocatalytic degradation of NO
SP  - 133
EP  - 144
VL  - 365
DO  - 10.1016/j.jphotochem.2018.07.038
ER  - 
@article{
author = "Habran, Margarita and Pontón, Patricia I. and Mančić, Lidija and Pandoli, Omar and Krambrock, Klaus and Maia da Costa, Marcelo Eduardo Huguenin and Letichevsky, Sonia and Costa, Antonio Mario Leal Martins and Morgado, Edisson Jr and Marinković, Bojan A.",
year = "2018",
url = "http://dais.sanu.ac.rs/123456789/4084",
abstract = "The efficiency of photo-oxidation of pollutants catalysed by semiconductors is still limited for real-world applications due to several drawbacks, such as a) insufficient absorption of visible radiation, which predominates in solar spectrum, b) rapid free electron to hole recombination, c) small surface area, built from equilibrium crystallographic facets with low adsorption capacities and d) photo-corrosion. The present study disclosures new mesoporous heterostructures, built from exfoliated lepidocrocite-like ferrititanates and TiO2 (anatase)-acetylacetone charge transfer complex, capable of reducing free electron-to-hole recombination rate through a robust charge separation and sensitive to the visible light spectrum. The synthesis route is based on soft-chemistry and low temperature calcination at 300 °C. Two different partially pillarized heterostructures, denoted as HM-1 and HM-2, have been synthesized. It was observed that the heterostructure HM-1 was four times more active toward photocatalytic degradation of NO gas in comparison to the benchmark photocatalytic material P25. The lower activity of the heterostructure HM-2, comparable to that of P-25, was attributed to the high value of Urbach energy that indicates high number of defect sites within energy band-gap of the constituent semiconductor components. [Ti] anatase/[Ti] ferrititanate mol ratio might also play a role in photocatalytic efficiency. © 2018 Elsevier B.V.",
publisher = "Elsevier",
journal = "Journal of Photochemistry and Photobiology A: Chemistry",
title = "Visible light sensitive mesoporous nanohybrids of lepidocrocite-like ferrititanate coupled to a charge transfer complex: Synthesis, characterization and photocatalytic degradation of NO",
pages = "133-144",
volume = "365",
doi = "10.1016/j.jphotochem.2018.07.038"
}
Habran, M., Pontón, P. I., Mančić, L., Pandoli, O., Krambrock, K., Maia da Costa, M. E. H., Letichevsky, S., Costa, A. M. L. M., Morgado, E. J.,& Marinković, B. A. (2018). Visible light sensitive mesoporous nanohybrids of lepidocrocite-like ferrititanate coupled to a charge transfer complex: Synthesis, characterization and photocatalytic degradation of NO.
Journal of Photochemistry and Photobiology A: ChemistryElsevier., 365, 133-144.
https://doi.org/10.1016/j.jphotochem.2018.07.038
Habran M, Pontón PI, Mančić L, Pandoli O, Krambrock K, Maia da Costa MEH, Letichevsky S, Costa AMLM, Morgado EJ, Marinković BA. Visible light sensitive mesoporous nanohybrids of lepidocrocite-like ferrititanate coupled to a charge transfer complex: Synthesis, characterization and photocatalytic degradation of NO. Journal of Photochemistry and Photobiology A: Chemistry. 2018;365:133-144
Habran Margarita, Pontón Patricia I., Mančić Lidija, Pandoli Omar, Krambrock Klaus, Maia da Costa Marcelo Eduardo Huguenin, Letichevsky Sonia, Costa Antonio Mario Leal Martins, Morgado Edisson Jr, Marinković Bojan A., "Visible light sensitive mesoporous nanohybrids of lepidocrocite-like ferrititanate coupled to a charge transfer complex: Synthesis, characterization and photocatalytic degradation of NO" 365 (2018):133-144,
https://doi.org/10.1016/j.jphotochem.2018.07.038 .
2
1
2

Application of silane grafted titanate nanotubes in reinforcing of polyamide 11 composites

Mančić, Lidija; Pontón, Patricia I.; Letichevsky, Sonia; Costa, Antonio Mario Leal Martins; Marinković, Bojan A.; Rizzo, Fernando C.

(Elsevier, 2016)

TY  - JOUR
AU  - Mančić, Lidija
AU  - Pontón, Patricia I.
AU  - Letichevsky, Sonia
AU  - Costa, Antonio Mario Leal Martins
AU  - Marinković, Bojan A.
AU  - Rizzo, Fernando C.
PY  - 2016
UR  - http://dais.sanu.ac.rs/123456789/2316
AB  - Polyamide 11 (PA11) composites reinforced with pristine and silanized titanate nanotubes (TTNT) were prepared using twin-screw melt compounding. A better dispersion of silanized TTNT in PA11 caused increase of crystallinity and decrease of the long period of PA11 lamellar structure. The increase of glass transition (∼33%) and decomposition temperature (∼3%), as well as, the improvement of Young's, storage and loss modulus (of 17, 27 and 17% respectively) was achieved in the composites loaded with the highest content (2 wt%) of nanofiller silanized by 3-aminopropyltriethoxysilane (APTES), owning to a chemical interaction established at the silanized TTNT-PA11 interface. Contrary to it, lack of compatibility at the pristine TTNT-PA11 interface led to drop (up to 20%) in the strength at break in these composites.
PB  - Elsevier
T2  - Composites Part B: Engineering
T1  - Application of silane grafted titanate nanotubes in reinforcing of polyamide 11 composites
SP  - 153
EP  - 162
VL  - 93
DO  - 10.1016/j.compositesb.2016.03.028
ER  - 
@article{
author = "Mančić, Lidija and Pontón, Patricia I. and Letichevsky, Sonia and Costa, Antonio Mario Leal Martins and Marinković, Bojan A. and Rizzo, Fernando C.",
year = "2016",
url = "http://dais.sanu.ac.rs/123456789/2316",
abstract = "Polyamide 11 (PA11) composites reinforced with pristine and silanized titanate nanotubes (TTNT) were prepared using twin-screw melt compounding. A better dispersion of silanized TTNT in PA11 caused increase of crystallinity and decrease of the long period of PA11 lamellar structure. The increase of glass transition (∼33%) and decomposition temperature (∼3%), as well as, the improvement of Young's, storage and loss modulus (of 17, 27 and 17% respectively) was achieved in the composites loaded with the highest content (2 wt%) of nanofiller silanized by 3-aminopropyltriethoxysilane (APTES), owning to a chemical interaction established at the silanized TTNT-PA11 interface. Contrary to it, lack of compatibility at the pristine TTNT-PA11 interface led to drop (up to 20%) in the strength at break in these composites.",
publisher = "Elsevier",
journal = "Composites Part B: Engineering",
title = "Application of silane grafted titanate nanotubes in reinforcing of polyamide 11 composites",
pages = "153-162",
volume = "93",
doi = "10.1016/j.compositesb.2016.03.028"
}
Mančić, L., Pontón, P. I., Letichevsky, S., Costa, A. M. L. M., Marinković, B. A.,& Rizzo, F. C. (2016). Application of silane grafted titanate nanotubes in reinforcing of polyamide 11 composites.
Composites Part B: EngineeringElsevier., 93, 153-162.
https://doi.org/10.1016/j.compositesb.2016.03.028
Mančić L, Pontón PI, Letichevsky S, Costa AMLM, Marinković BA, Rizzo FC. Application of silane grafted titanate nanotubes in reinforcing of polyamide 11 composites. Composites Part B: Engineering. 2016;93:153-162
Mančić Lidija, Pontón Patricia I., Letichevsky Sonia, Costa Antonio Mario Leal Martins, Marinković Bojan A., Rizzo Fernando C., "Application of silane grafted titanate nanotubes in reinforcing of polyamide 11 composites" 93 (2016):153-162,
https://doi.org/10.1016/j.compositesb.2016.03.028 .
9
10
10

Lepidocrocite-like ferrititanate nanosheets and their full exfoliation with quaternary ammonium compounds

Marinković, Bojan A.; Pontón, Patricia I.; Resende, J. M.; Letichevsky, Sonia; Habran, Margarita; Viol, J. B.; Pandoli, Omar; Mančić, Lidija

(Elsevier, 2015)

TY  - JOUR
AU  - Marinković, Bojan A.
AU  - Pontón, Patricia I.
AU  - Resende, J. M.
AU  - Letichevsky, Sonia
AU  - Habran, Margarita
AU  - Viol, J. B.
AU  - Pandoli, Omar
AU  - Mančić, Lidija
PY  - 2015
UR  - http://dais.sanu.ac.rs/123456789/3515
AB  - Efficient methods for the synthesis of layered structure nanomaterials (nanosheets), their complete exfoliation (delamination) into the layers of atomic thickness and design of organic-inorganic nanohybrids present important stages toward development of improved polymer-based nanocomposites and pillared heterostructures with potential application in purification technologies such as photocatalysis. A rapid and efficient exfoliation process of protonated layered ferrititanates with lepidocrocite-like structure and formation of organic-inorganic nanohybrids is performed starting from the nanosheets composed of only a few host layers and nanometric lateral dimensions using quaternary ammonium compounds. These nanosheets are initially synthesized from a highly abundant precursor through an alkaline hydrothermal route. We demonstrated that dimethyldioctadecylammonium cations strongly interact with the exfoliated single host layers (0.75. nm thick) providing thermal stability (~ 500 °C) to the as-prepared organic-inorganic nanohybrid over the temperature range commonly applied for the processing of thermoplastic nanocomposites. © 2015 Elsevier Ltd.
PB  - Elsevier
T2  - Materials and Design
T1  - Lepidocrocite-like ferrititanate nanosheets and their full exfoliation with quaternary ammonium compounds
SP  - 197
EP  - 204
VL  - 85
DO  - 10.1016/j.matdes.2015.06.171
ER  - 
@article{
author = "Marinković, Bojan A. and Pontón, Patricia I. and Resende, J. M. and Letichevsky, Sonia and Habran, Margarita and Viol, J. B. and Pandoli, Omar and Mančić, Lidija",
year = "2015",
url = "http://dais.sanu.ac.rs/123456789/3515",
abstract = "Efficient methods for the synthesis of layered structure nanomaterials (nanosheets), their complete exfoliation (delamination) into the layers of atomic thickness and design of organic-inorganic nanohybrids present important stages toward development of improved polymer-based nanocomposites and pillared heterostructures with potential application in purification technologies such as photocatalysis. A rapid and efficient exfoliation process of protonated layered ferrititanates with lepidocrocite-like structure and formation of organic-inorganic nanohybrids is performed starting from the nanosheets composed of only a few host layers and nanometric lateral dimensions using quaternary ammonium compounds. These nanosheets are initially synthesized from a highly abundant precursor through an alkaline hydrothermal route. We demonstrated that dimethyldioctadecylammonium cations strongly interact with the exfoliated single host layers (0.75. nm thick) providing thermal stability (~ 500 °C) to the as-prepared organic-inorganic nanohybrid over the temperature range commonly applied for the processing of thermoplastic nanocomposites. © 2015 Elsevier Ltd.",
publisher = "Elsevier",
journal = "Materials and Design",
title = "Lepidocrocite-like ferrititanate nanosheets and their full exfoliation with quaternary ammonium compounds",
pages = "197-204",
volume = "85",
doi = "10.1016/j.matdes.2015.06.171"
}
Marinković, B. A., Pontón, P. I., Resende, J. M., Letichevsky, S., Habran, M., Viol, J. B., Pandoli, O.,& Mančić, L. (2015). Lepidocrocite-like ferrititanate nanosheets and their full exfoliation with quaternary ammonium compounds.
Materials and DesignElsevier., 85, 197-204.
https://doi.org/10.1016/j.matdes.2015.06.171
Marinković BA, Pontón PI, Resende JM, Letichevsky S, Habran M, Viol JB, Pandoli O, Mančić L. Lepidocrocite-like ferrititanate nanosheets and their full exfoliation with quaternary ammonium compounds. Materials and Design. 2015;85:197-204
Marinković Bojan A., Pontón Patricia I., Resende J. M., Letichevsky Sonia, Habran Margarita, Viol J. B., Pandoli Omar, Mančić Lidija, "Lepidocrocite-like ferrititanate nanosheets and their full exfoliation with quaternary ammonium compounds" 85 (2015):197-204,
https://doi.org/10.1016/j.matdes.2015.06.171 .
3
3
3
3

Al2Mo3O12/polyethylene composites with reduced coefficient of thermal expansion

Soares, Alexandre Roberto; Pontón, Patricia I.; Mančić, Lidija; D'Almeida, Jose Roberto; Romao, Carl P.; White, Mary Ann; Marinković, Bojan

(2014)

TY  - JOUR
AU  - Soares, Alexandre Roberto
AU  - Pontón, Patricia I.
AU  - Mančić, Lidija
AU  - D'Almeida, Jose Roberto
AU  - Romao, Carl P.
AU  - White, Mary Ann
AU  - Marinković, Bojan
PY  - 2014
UR  - http://dais.sanu.ac.rs/123456789/567
AB  - Recently, polymer composites reinforced with low fractions of thermomiotic nanoceramics have triggered a lot of research. The efforts have been focused on achieving considerable reduction of the coefficient of thermal expansion (CTE) of polymeric materials without deterioration of other physical properties. In this context, polyethylene (PE) composites reinforced with different loads of Al2Mo3O12 nanofillers (0.5–4 mass %) were fabricated by micro-compounding. To enhance the interfacial interaction between the two components, chemical functionalization of Al2Mo3O12 was performed with vinyltrimethoxysilane (VTMS) prior to micro-compounding. Infrared spectroscopy and thermogravimetry demonstrated the successful grafting of VTMS on the Al2Mo3O12 surface. The composites showed strongly decreased CTEs, up to 46 % reduction for loadings of 4 mass % compared with neat PE, suggesting intimate filler–matrix interactions. The variation of CTEs of the composites in terms of the filler fraction was successfully described by Turner’s model allowing calculation of the bulk modulus of monoclinic Al2Mo3O12 (13.6 ± 2.6 GPa), in agreement with the value obtained by an ultrasonic method. The thermal stability of the composites was improved, although the addition of functionalized fillers decreased the degree of crystallinity of the PE to a small extent. The Young’s modulus and yield strength of the composites increased from 6.6 to 19.1 % and 4.0–6.0 %, respectively, supporting the existence of strong filler–matrix interactions, contributing to an efficient load transfer. Finite element analysis of thermal stresses indicated absence of plastic deformation of the matrix or fracture of the nanofillers, for a 100 K temperature drop.
T2  - Journal of Materials Science
T1  - Al2Mo3O12/polyethylene composites with reduced coefficient of thermal expansion
SP  - 7870
EP  - 7882
VL  - 49
IS  - 22
DO  - 10.1007/s10853-014-8498-3
ER  - 
@article{
author = "Soares, Alexandre Roberto and Pontón, Patricia I. and Mančić, Lidija and D'Almeida, Jose Roberto and Romao, Carl P. and White, Mary Ann and Marinković, Bojan",
year = "2014",
url = "http://dais.sanu.ac.rs/123456789/567",
abstract = "Recently, polymer composites reinforced with low fractions of thermomiotic nanoceramics have triggered a lot of research. The efforts have been focused on achieving considerable reduction of the coefficient of thermal expansion (CTE) of polymeric materials without deterioration of other physical properties. In this context, polyethylene (PE) composites reinforced with different loads of Al2Mo3O12 nanofillers (0.5–4 mass %) were fabricated by micro-compounding. To enhance the interfacial interaction between the two components, chemical functionalization of Al2Mo3O12 was performed with vinyltrimethoxysilane (VTMS) prior to micro-compounding. Infrared spectroscopy and thermogravimetry demonstrated the successful grafting of VTMS on the Al2Mo3O12 surface. The composites showed strongly decreased CTEs, up to 46 % reduction for loadings of 4 mass % compared with neat PE, suggesting intimate filler–matrix interactions. The variation of CTEs of the composites in terms of the filler fraction was successfully described by Turner’s model allowing calculation of the bulk modulus of monoclinic Al2Mo3O12 (13.6 ± 2.6 GPa), in agreement with the value obtained by an ultrasonic method. The thermal stability of the composites was improved, although the addition of functionalized fillers decreased the degree of crystallinity of the PE to a small extent. The Young’s modulus and yield strength of the composites increased from 6.6 to 19.1 % and 4.0–6.0 %, respectively, supporting the existence of strong filler–matrix interactions, contributing to an efficient load transfer. Finite element analysis of thermal stresses indicated absence of plastic deformation of the matrix or fracture of the nanofillers, for a 100 K temperature drop.",
journal = "Journal of Materials Science",
title = "Al2Mo3O12/polyethylene composites with reduced coefficient of thermal expansion",
pages = "7870-7882",
volume = "49",
number = "22",
doi = "10.1007/s10853-014-8498-3"
}
Soares, A. R., Pontón, P. I., Mančić, L., D'Almeida, J. R., Romao, C. P., White, M. A.,& Marinković, B. (2014). Al2Mo3O12/polyethylene composites with reduced coefficient of thermal expansion.
Journal of Materials Science, 49(22), 7870-7882.
https://doi.org/10.1007/s10853-014-8498-3
Soares AR, Pontón PI, Mančić L, D'Almeida JR, Romao CP, White MA, Marinković B. Al2Mo3O12/polyethylene composites with reduced coefficient of thermal expansion. Journal of Materials Science. 2014;49(22):7870-7882
Soares Alexandre Roberto, Pontón Patricia I., Mančić Lidija, D'Almeida Jose Roberto, Romao Carl P., White Mary Ann, Marinković Bojan, "Al2Mo3O12/polyethylene composites with reduced coefficient of thermal expansion" 49, no. 22 (2014):7870-7882,
https://doi.org/10.1007/s10853-014-8498-3 .
21
18
21

The effects of the chemical composition of titanate nanotubes and solvent type on 3-aminopropyltriethoxysilane grafting efficiency

Pontón, Patricia I.; D'Almeida, Jose Roberto; Marinković, Bojan; Savić, Slavica M.; Mančić, Lidija; Rey, Nicolás; Morgado, Edisson Jr.; Rizzo, Fernando C.

(Elsevier, 2014)

TY  - JOUR
AU  - Pontón, Patricia I.
AU  - D'Almeida, Jose Roberto
AU  - Marinković, Bojan
AU  - Savić, Slavica M.
AU  - Mančić, Lidija
AU  - Rey, Nicolás
AU  - Morgado, Edisson Jr.
AU  - Rizzo, Fernando C.
PY  - 2014
UR  - http://dais.sanu.ac.rs/123456789/565
AB  - One of the major challenges in the development of nanocomposites based on a polymer matrix and highly polar ceramic nanofillers is the lack of the compatibility between these two components. In order to improve the chemical interaction between titanate nanotubes (TTNT) and polymer matrix, such as nylon 11,3-aminopropyltriethoxysilane (APTES) was grafted onto TTNT. The effects of the TTNT chemical composition i.e. sodium content and solvent type on the grafting silane efficiency were thoroughly studied through CHN elemental analysis, Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), transmission electron microscopy (TEM), surface area and zeta potential measurements. The present study brings evidences supporting aqueous ethanol as more efficient reaction medium for TTNT functionalization with APTES, independent of the sodium content of nanotubes, when compared with pure water. It is also worth noting that within aqueous ethanol medium, TTNT with low sodium content are more efficiently grafted than TTNT with high sodium content. Successful APTES grafting decreases concentration of the hydroxyl groups on TTNT surfaces and enables its future application for the fabrication of nylon 11 nanocomposites.
PB  - Elsevier
T2  - Applied Surface Science
T1  - The effects of the chemical composition of titanate nanotubes and solvent type on 3-aminopropyltriethoxysilane grafting efficiency
SP  - 315
EP  - 322
VL  - 301
DO  - 10.1016/j.apsusc.2014.02.071
ER  - 
@article{
author = "Pontón, Patricia I. and D'Almeida, Jose Roberto and Marinković, Bojan and Savić, Slavica M. and Mančić, Lidija and Rey, Nicolás and Morgado, Edisson Jr. and Rizzo, Fernando C.",
year = "2014",
url = "http://dais.sanu.ac.rs/123456789/565",
abstract = "One of the major challenges in the development of nanocomposites based on a polymer matrix and highly polar ceramic nanofillers is the lack of the compatibility between these two components. In order to improve the chemical interaction between titanate nanotubes (TTNT) and polymer matrix, such as nylon 11,3-aminopropyltriethoxysilane (APTES) was grafted onto TTNT. The effects of the TTNT chemical composition i.e. sodium content and solvent type on the grafting silane efficiency were thoroughly studied through CHN elemental analysis, Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), transmission electron microscopy (TEM), surface area and zeta potential measurements. The present study brings evidences supporting aqueous ethanol as more efficient reaction medium for TTNT functionalization with APTES, independent of the sodium content of nanotubes, when compared with pure water. It is also worth noting that within aqueous ethanol medium, TTNT with low sodium content are more efficiently grafted than TTNT with high sodium content. Successful APTES grafting decreases concentration of the hydroxyl groups on TTNT surfaces and enables its future application for the fabrication of nylon 11 nanocomposites.",
publisher = "Elsevier",
journal = "Applied Surface Science",
title = "The effects of the chemical composition of titanate nanotubes and solvent type on 3-aminopropyltriethoxysilane grafting efficiency",
pages = "315-322",
volume = "301",
doi = "10.1016/j.apsusc.2014.02.071"
}
Pontón, P. I., D'Almeida, J. R., Marinković, B., Savić, S. M., Mančić, L., Rey, N., Morgado, E. Jr.,& Rizzo, F. C. (2014). The effects of the chemical composition of titanate nanotubes and solvent type on 3-aminopropyltriethoxysilane grafting efficiency.
Applied Surface ScienceElsevier., 301, 315-322.
https://doi.org/10.1016/j.apsusc.2014.02.071
Pontón PI, D'Almeida JR, Marinković B, Savić SM, Mančić L, Rey N, Morgado EJ, Rizzo FC. The effects of the chemical composition of titanate nanotubes and solvent type on 3-aminopropyltriethoxysilane grafting efficiency. Applied Surface Science. 2014;301:315-322
Pontón Patricia I., D'Almeida Jose Roberto, Marinković Bojan, Savić Slavica M., Mančić Lidija, Rey Nicolás, Morgado Edisson Jr., Rizzo Fernando C., "The effects of the chemical composition of titanate nanotubes and solvent type on 3-aminopropyltriethoxysilane grafting efficiency" 301 (2014):315-322,
https://doi.org/10.1016/j.apsusc.2014.02.071 .
32
33
32

Al2Mo3O12/polyethylene composites with reduced coefficient of thermal expansion

Soares, Alexandre Roberto; Pontón, Patricia I.; Mančić, Lidija; D'Almeida, Jose Roberto; Romao, Carl P.; White, Mary Ann; Marinković, Bojan

(Springer, 2014)

TY  - JOUR
AU  - Soares, Alexandre Roberto
AU  - Pontón, Patricia I.
AU  - Mančić, Lidija
AU  - D'Almeida, Jose Roberto
AU  - Romao, Carl P.
AU  - White, Mary Ann
AU  - Marinković, Bojan
PY  - 2014
UR  - http://dais.sanu.ac.rs/123456789/664
AB  - Recently, polymer composites reinforced with low fractions of thermomiotic nanoceramics have triggered a lot of research. The efforts have been focused on achieving considerable reduction of the coefficient of thermal expansion (CTE) of polymeric materials without deterioration of other physical properties. In this context, polyethylene (PE) composites reinforced with different loads of Al2Mo3O12 nanofillers (0.5–4 mass %) were fabricated by micro-compounding. To enhance the interfacial interaction between the two components, chemical functionalization of Al2Mo3O12 was performed with vinyltrimethoxysilane (VTMS) prior to micro-compounding. Infrared spectroscopy and thermogravimetry demonstrated the successful grafting of VTMS on the Al2Mo3O12 surface. The composites showed strongly decreased CTEs, up to 46 % reduction for loadings of 4 mass % compared with neat PE, suggesting intimate filler–matrix interactions. The variation of CTEs of the composites in terms of the filler fraction was successfully described by Turner’s model allowing calculation of the bulk modulus of monoclinic Al2Mo3O12 (13.6 ± 2.6 GPa), in agreement with the value obtained by an ultrasonic method. The thermal stability of the composites was improved, although the addition of functionalized fillers decreased the degree of crystallinity of the PE to a small extent. The Young’s modulus and yield strength of the composites increased from 6.6 to 19.1 % and 4.0–6.0 %, respectively, supporting the existence of strong filler–matrix interactions, contributing to an efficient load transfer. Finite element analysis of thermal stresses indicated absence of plastic deformation of the matrix or fracture of the nanofillers, for a 100 K temperature drop.
PB  - Springer
T2  - Journal of Materials Science
T1  - Al2Mo3O12/polyethylene composites with reduced coefficient of thermal expansion
SP  - 7870
EP  - 7882
VL  - 49
IS  - 22
DO  - 10.1007/s10853-014-8498-3
ER  - 
@article{
author = "Soares, Alexandre Roberto and Pontón, Patricia I. and Mančić, Lidija and D'Almeida, Jose Roberto and Romao, Carl P. and White, Mary Ann and Marinković, Bojan",
year = "2014",
url = "http://dais.sanu.ac.rs/123456789/664",
abstract = "Recently, polymer composites reinforced with low fractions of thermomiotic nanoceramics have triggered a lot of research. The efforts have been focused on achieving considerable reduction of the coefficient of thermal expansion (CTE) of polymeric materials without deterioration of other physical properties. In this context, polyethylene (PE) composites reinforced with different loads of Al2Mo3O12 nanofillers (0.5–4 mass %) were fabricated by micro-compounding. To enhance the interfacial interaction between the two components, chemical functionalization of Al2Mo3O12 was performed with vinyltrimethoxysilane (VTMS) prior to micro-compounding. Infrared spectroscopy and thermogravimetry demonstrated the successful grafting of VTMS on the Al2Mo3O12 surface. The composites showed strongly decreased CTEs, up to 46 % reduction for loadings of 4 mass % compared with neat PE, suggesting intimate filler–matrix interactions. The variation of CTEs of the composites in terms of the filler fraction was successfully described by Turner’s model allowing calculation of the bulk modulus of monoclinic Al2Mo3O12 (13.6 ± 2.6 GPa), in agreement with the value obtained by an ultrasonic method. The thermal stability of the composites was improved, although the addition of functionalized fillers decreased the degree of crystallinity of the PE to a small extent. The Young’s modulus and yield strength of the composites increased from 6.6 to 19.1 % and 4.0–6.0 %, respectively, supporting the existence of strong filler–matrix interactions, contributing to an efficient load transfer. Finite element analysis of thermal stresses indicated absence of plastic deformation of the matrix or fracture of the nanofillers, for a 100 K temperature drop.",
publisher = "Springer",
journal = "Journal of Materials Science",
title = "Al2Mo3O12/polyethylene composites with reduced coefficient of thermal expansion",
pages = "7870-7882",
volume = "49",
number = "22",
doi = "10.1007/s10853-014-8498-3"
}
Soares, A. R., Pontón, P. I., Mančić, L., D'Almeida, J. R., Romao, C. P., White, M. A.,& Marinković, B. (2014). Al2Mo3O12/polyethylene composites with reduced coefficient of thermal expansion.
Journal of Materials ScienceSpringer., 49(22), 7870-7882.
https://doi.org/10.1007/s10853-014-8498-3
Soares AR, Pontón PI, Mančić L, D'Almeida JR, Romao CP, White MA, Marinković B. Al2Mo3O12/polyethylene composites with reduced coefficient of thermal expansion. Journal of Materials Science. 2014;49(22):7870-7882
Soares Alexandre Roberto, Pontón Patricia I., Mančić Lidija, D'Almeida Jose Roberto, Romao Carl P., White Mary Ann, Marinković Bojan, "Al2Mo3O12/polyethylene composites with reduced coefficient of thermal expansion" 49, no. 22 (2014):7870-7882,
https://doi.org/10.1007/s10853-014-8498-3 .
21
18
21

Functionalization of the titanate nanotubes with a silane coupling agent

Pontón, Patricia I.; Mančić, Lidija; Savić, Slavica M.; Marinković, Bojan

(Belgrade : Institute for Multidisciplinary Research, 2013)

TY  - CONF
AU  - Pontón, Patricia I.
AU  - Mančić, Lidija
AU  - Savić, Slavica M.
AU  - Marinković, Bojan
PY  - 2013
UR  - http://dais.sanu.ac.rs/123456789/408
AB  - In order to develop new nanosized filler compatible with the thermoplastic polymer Nyion-11, trititanate nanotubes (TTNTs) were synthesized by standard alkaline hydrothermal treatment of a TiO2 anatase powder in 10 M NaOH at 120 DC for 24 h. After the synthesis, the as-obtained nanopowder was washed differently (either with water or HC1), in order to prepare TTNTs with high and low sodium contents. Chemical functionalization of TTNTs was performed with 3-minopropyltriethoxisilane (APTES) coupling agent using two different reaction media (water and an ethanol/water mixture) with the aim to improve the bonding between inorganic hydrophilic fillers and hydrophobic polymer matrix. Fourier transform infrared spectroscopy (FTIR), thermogravimetry analysis (TGA), transmission electron microscopy (TEM), zeta potential and CHN elemental analyses were used to elucidate the grafting mechanism of APTES at TTNTs surface. The obtained results shown that: APTES coupling agent is bounded covalently to the TTNTs surface (Ti-O-Si bond was identified after deconvolution of the IR bands at 800-1000 cm-1); grafted amount of APTES is almost independent of the reaction media; protonation of-NH2 groups shift the isoelectric point from pH 2.4 to pH 6.6; TTNTs kept their original size and shape after silanization.
PB  - Belgrade : Institute for Multidisciplinary Research
C3  - 2nd Conference of the Serbian Ceramic Society, 2CSCS-2013, June 5-7, 2013, Belgrade, Serbia :  Programme and th e book of abstracts
T1  - Functionalization of the titanate nanotubes with a silane coupling agent
SP  - 65
EP  - 66
ER  - 
@conference{
author = "Pontón, Patricia I. and Mančić, Lidija and Savić, Slavica M. and Marinković, Bojan",
year = "2013",
url = "http://dais.sanu.ac.rs/123456789/408",
abstract = "In order to develop new nanosized filler compatible with the thermoplastic polymer Nyion-11, trititanate nanotubes (TTNTs) were synthesized by standard alkaline hydrothermal treatment of a TiO2 anatase powder in 10 M NaOH at 120 DC for 24 h. After the synthesis, the as-obtained nanopowder was washed differently (either with water or HC1), in order to prepare TTNTs with high and low sodium contents. Chemical functionalization of TTNTs was performed with 3-minopropyltriethoxisilane (APTES) coupling agent using two different reaction media (water and an ethanol/water mixture) with the aim to improve the bonding between inorganic hydrophilic fillers and hydrophobic polymer matrix. Fourier transform infrared spectroscopy (FTIR), thermogravimetry analysis (TGA), transmission electron microscopy (TEM), zeta potential and CHN elemental analyses were used to elucidate the grafting mechanism of APTES at TTNTs surface. The obtained results shown that: APTES coupling agent is bounded covalently to the TTNTs surface (Ti-O-Si bond was identified after deconvolution of the IR bands at 800-1000 cm-1); grafted amount of APTES is almost independent of the reaction media; protonation of-NH2 groups shift the isoelectric point from pH 2.4 to pH 6.6; TTNTs kept their original size and shape after silanization.",
publisher = "Belgrade : Institute for Multidisciplinary Research",
journal = "2nd Conference of the Serbian Ceramic Society, 2CSCS-2013, June 5-7, 2013, Belgrade, Serbia :  Programme and th e book of abstracts",
title = "Functionalization of the titanate nanotubes with a silane coupling agent",
pages = "65-66"
}
Pontón, P. I., Mančić, L., Savić, S. M.,& Marinković, B. (2013). Functionalization of the titanate nanotubes with a silane coupling agent.
2nd Conference of the Serbian Ceramic Society, 2CSCS-2013, June 5-7, 2013, Belgrade, Serbia :  Programme and th e book of abstractsBelgrade : Institute for Multidisciplinary Research., 65-66.
Pontón PI, Mančić L, Savić SM, Marinković B. Functionalization of the titanate nanotubes with a silane coupling agent. 2nd Conference of the Serbian Ceramic Society, 2CSCS-2013, June 5-7, 2013, Belgrade, Serbia :  Programme and th e book of abstracts. 2013;:65-66
Pontón Patricia I., Mančić Lidija, Savić Slavica M., Marinković Bojan, "Functionalization of the titanate nanotubes with a silane coupling agent" (2013):65-66