TY  - JOUR
AU  - Rabanal, Maria Eugenia
AU  - Barroso, Ignacio
AU  - Gómez-Villalba, Luz Stella
AU  - Mančić, Lidija
AU  - Milošević, Olivera
PY  - 2014
UR  - https://dais.sanu.ac.rs/123456789/661
AB  - Sub-micronic particles are of considerable interest for a wide variety of applications, such as catalyst or optical ceramics, due to their unique properties determined by size, composition and structure. In this work, we have reported a simple, rapid, single-step aerosol processing for the continuous synthesis of nanostructured particles having homogeneous composition and narrow size distributions, good crystallinity and fluorescence response. This paper presents the synthesis, optimization and characterization of hybrid Ag@Y2O3:Eu (9 at.% Eu3+) phosphor particles by means of spray pyrolysis method from water solutions of common nitrates precursors. The effect of silver concentration on particle structure, morphology and functional properties was specially evaluated. The as-prepared samples were additionally heated from 800 to 1200 °C/12 h under constant argon flow to avoid the silver oxidation. It was evident the cubic phase with Ia-3 symmetry as the principal one in all as-prepared and thermally treated samples. For the case high silver nitrate concentrations in precursor solutions a minority crystalline phase having Fm3m symmetry was identified. The luminescence emission spectra have been taken after excitation at 235 nm wavelength. It is evident the increase in the emission caused by the presence of metallic silver nanoparticles onto Y2O3:Eu3+ particle surface. It was also determined the silver concentration influence on the fluorescence response.
PB  - Elsevier
T2  - Advanced Powder Technology
T1  - Directed growth of nanoarchitected hybrid phosphor particles synthesized at low temperature
SP  - 1442
EP  - 1448
VL  - 25
IS  - 5
DO  - 10.1016/j.apt.2014.03.006
UR  - https://hdl.handle.net/21.15107/rcub_dais_661
ER  - 

@article{
author = "Rabanal, Maria Eugenia and Barroso, Ignacio and Gómez-Villalba, Luz Stella and Mančić, Lidija and Milošević, Olivera",
year = "2014",
abstract = "Sub-micronic particles are of considerable interest for a wide variety of applications, such as catalyst or optical ceramics, due to their unique properties determined by size, composition and structure. In this work, we have reported a simple, rapid, single-step aerosol processing for the continuous synthesis of nanostructured particles having homogeneous composition and narrow size distributions, good crystallinity and fluorescence response. This paper presents the synthesis, optimization and characterization of hybrid Ag@Y2O3:Eu (9 at.% Eu3+) phosphor particles by means of spray pyrolysis method from water solutions of common nitrates precursors. The effect of silver concentration on particle structure, morphology and functional properties was specially evaluated. The as-prepared samples were additionally heated from 800 to 1200 °C/12 h under constant argon flow to avoid the silver oxidation. It was evident the cubic phase with Ia-3 symmetry as the principal one in all as-prepared and thermally treated samples. For the case high silver nitrate concentrations in precursor solutions a minority crystalline phase having Fm3m symmetry was identified. The luminescence emission spectra have been taken after excitation at 235 nm wavelength. It is evident the increase in the emission caused by the presence of metallic silver nanoparticles onto Y2O3:Eu3+ particle surface. It was also determined the silver concentration influence on the fluorescence response.",
publisher = "Elsevier",
journal = "Advanced Powder Technology",
title = "Directed growth of nanoarchitected hybrid phosphor particles synthesized at low temperature",
pages = "1442-1448",
volume = "25",
number = "5",
doi = "10.1016/j.apt.2014.03.006",
url = "https://hdl.handle.net/21.15107/rcub_dais_661"
}

Rabanal, M. E., Barroso, I., Gómez-Villalba, L. S., Mančić, L.,& Milošević, O.. (2014). Directed growth of nanoarchitected hybrid phosphor particles synthesized at low temperature. in Advanced Powder Technology
Elsevier., 25(5), 1442-1448.
https://doi.org/10.1016/j.apt.2014.03.006
https://hdl.handle.net/21.15107/rcub_dais_661

Rabanal ME, Barroso I, Gómez-Villalba LS, Mančić L, Milošević O. Directed growth of nanoarchitected hybrid phosphor particles synthesized at low temperature. in Advanced Powder Technology. 2014;25(5):1442-1448.
doi:10.1016/j.apt.2014.03.006
https://hdl.handle.net/21.15107/rcub_dais_661 .

Rabanal, Maria Eugenia, Barroso, Ignacio, Gómez-Villalba, Luz Stella, Mančić, Lidija, Milošević, Olivera, "Directed growth of nanoarchitected hybrid phosphor particles synthesized at low temperature" in Advanced Powder Technology, 25, no. 5 (2014):1442-1448,
https://doi.org/10.1016/j.apt.2014.03.006 .,
https://hdl.handle.net/21.15107/rcub_dais_661 .

TY  - CONF
AU  - Rabanal Jiménez, Maria Eugenia
AU  - Flores-Carrasco, Gregorio
AU  - Gómez, Luz Stella
AU  - Barroso, Ignacio
AU  - Mančić, Lidija
AU  - Milošević, Olivera
PY  - 2013
UR  - https://dais.sanu.ac.rs/123456789/817
AB  - Nanotechnology is an emerging science involving synthesis and optimization of matter at the nanometer scale. The recent rise in the interest surrounding nanotechnology stems from its potential to revolutionize such fields as engineering and medicine. Nanoparticles, the building blocks of nanotechnology, have been broadly defined as having at least one dimension at 100 nm or less. Engineered nanoparticles are particles synthesized to exploit the size-related properties inherent in the nanoscale (e.g. conductivity, spectral properties, electrochemical properties, ... Spray pyrolysis is a versatile process regarding the powder synthesis of inorganic material. An atomizer (such as ultrasonic) is used to generate a mist from a water or organic solution of inorganic salts or metal organic compounds. The advantages of this method are that the control of particle size, particle size distribution, morphology, crystallite structure and chemical composition are possible. On the order hand, the hydrothermal synthesis is a useful method to prepare nanomaterials with homogeneous crystal structure and morphology, which has some advantages such as simple synthesis process and low energy consumption. In this work, different morphologies of zinc oxide (ZnO), including microrods, microspheres, hexagonal microprism, nanosheets or flower like have been obtained depending on what experimental conditions and synthesis method have been used. Also, hollow and spherical Ag/Y203:Eu (9% at) hybrid nanostructured particles by means of aerosol route from common nitrate solutions at 750°C in Ar atmosphere has been obtained. These as-prepared samples were additionally heated at temperatures up from 800° C to 1200 °C for 12h in argon atmosphere. The microstructures, morphologies and optical and functional properties of the as-prepared and heated samples were investigated by X-Ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HR-TEM), UV-VIS spectroscopy.
The photocatalytic activity of ZnO synthesized by different methods and experimental conditions was evaluated by removal rate of methyleneblue under UV irradiation (365 nm) at room temperature. The results showed that the photocatalytic efficiency of ZnO particles was enhanced by increased precursor concentration. In the case of Ag/Y203 systems, the luminescence results reveal a huge rise in the final luminescence properties as consequence of the "mirror effect" due to the presence of Ag nanoparticles.
PB  - Iasi : ModTech Professional Association
C3  - ModTech 2013: 1st International Conference Modern Technologies in Industrial Engineering, 27-29 June 2013, Mara Hotel, Sinaia, Romania: Book of abstract
T1  - Directed growth of nanoarchitected hydrid ceramic particles synthesised at low temperature
SP  - 35
EP  - 35
UR  - https://hdl.handle.net/21.15107/rcub_dais_817
ER  - 

@conference{
author = "Rabanal Jiménez, Maria Eugenia and Flores-Carrasco, Gregorio and Gómez, Luz Stella and Barroso, Ignacio and Mančić, Lidija and Milošević, Olivera",
year = "2013",
abstract = "Nanotechnology is an emerging science involving synthesis and optimization of matter at the nanometer scale. The recent rise in the interest surrounding nanotechnology stems from its potential to revolutionize such fields as engineering and medicine. Nanoparticles, the building blocks of nanotechnology, have been broadly defined as having at least one dimension at 100 nm or less. Engineered nanoparticles are particles synthesized to exploit the size-related properties inherent in the nanoscale (e.g. conductivity, spectral properties, electrochemical properties, ... Spray pyrolysis is a versatile process regarding the powder synthesis of inorganic material. An atomizer (such as ultrasonic) is used to generate a mist from a water or organic solution of inorganic salts or metal organic compounds. The advantages of this method are that the control of particle size, particle size distribution, morphology, crystallite structure and chemical composition are possible. On the order hand, the hydrothermal synthesis is a useful method to prepare nanomaterials with homogeneous crystal structure and morphology, which has some advantages such as simple synthesis process and low energy consumption. In this work, different morphologies of zinc oxide (ZnO), including microrods, microspheres, hexagonal microprism, nanosheets or flower like have been obtained depending on what experimental conditions and synthesis method have been used. Also, hollow and spherical Ag/Y203:Eu (9% at) hybrid nanostructured particles by means of aerosol route from common nitrate solutions at 750°C in Ar atmosphere has been obtained. These as-prepared samples were additionally heated at temperatures up from 800° C to 1200 °C for 12h in argon atmosphere. The microstructures, morphologies and optical and functional properties of the as-prepared and heated samples were investigated by X-Ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HR-TEM), UV-VIS spectroscopy.
The photocatalytic activity of ZnO synthesized by different methods and experimental conditions was evaluated by removal rate of methyleneblue under UV irradiation (365 nm) at room temperature. The results showed that the photocatalytic efficiency of ZnO particles was enhanced by increased precursor concentration. In the case of Ag/Y203 systems, the luminescence results reveal a huge rise in the final luminescence properties as consequence of the "mirror effect" due to the presence of Ag nanoparticles.",
publisher = "Iasi : ModTech Professional Association",
journal = "ModTech 2013: 1st International Conference Modern Technologies in Industrial Engineering, 27-29 June 2013, Mara Hotel, Sinaia, Romania: Book of abstract",
title = "Directed growth of nanoarchitected hydrid ceramic particles synthesised at low temperature",
pages = "35-35",
url = "https://hdl.handle.net/21.15107/rcub_dais_817"
}

Rabanal Jiménez, M. E., Flores-Carrasco, G., Gómez, L. S., Barroso, I., Mančić, L.,& Milošević, O.. (2013). Directed growth of nanoarchitected hydrid ceramic particles synthesised at low temperature. in ModTech 2013: 1st International Conference Modern Technologies in Industrial Engineering, 27-29 June 2013, Mara Hotel, Sinaia, Romania: Book of abstract
Iasi : ModTech Professional Association., 35-35.
https://hdl.handle.net/21.15107/rcub_dais_817

Rabanal Jiménez ME, Flores-Carrasco G, Gómez LS, Barroso I, Mančić L, Milošević O. Directed growth of nanoarchitected hydrid ceramic particles synthesised at low temperature. in ModTech 2013: 1st International Conference Modern Technologies in Industrial Engineering, 27-29 June 2013, Mara Hotel, Sinaia, Romania: Book of abstract. 2013;:35-35.
https://hdl.handle.net/21.15107/rcub_dais_817 .

Rabanal Jiménez, Maria Eugenia, Flores-Carrasco, Gregorio, Gómez, Luz Stella, Barroso, Ignacio, Mančić, Lidija, Milošević, Olivera, "Directed growth of nanoarchitected hydrid ceramic particles synthesised at low temperature" in ModTech 2013: 1st International Conference Modern Technologies in Industrial Engineering, 27-29 June 2013, Mara Hotel, Sinaia, Romania: Book of abstract (2013):35-35,
https://hdl.handle.net/21.15107/rcub_dais_817 .

TY  - JOUR
AU  - Mančić, Lidija
AU  - Lojpur, Vesna
AU  - Barroso, Ignacio
AU  - Rabanal, Maria Eugenia
AU  - Milošević, Olivera
PY  - 2012
UR  - https://dais.sanu.ac.rs/123456789/15973
AB  - Polycrystalline fine powders of yttrium aluminate doped with Ce3+ were synthesised by spray pyrolysis of a polymeric precursor, which was obtained by dissolving the corresponding nitrates in a solution of ethylenediaminetetraacetic acid (EDTA) in ethylene glycol (EG). Aerosol decomposition was performed at 550 °C followed by an additional thermal treatment (900–1100 °C). The yield of either a single yttrium aluminium perovskite (YAP) phase or a single yttrium aluminium garnet (YAG) phase was investigated as a function of the predefined yttrium/aluminium ratio, the cerium doping concentration, the processing temperature, and the thermal-treatment regime, which included the variation of the heating and cooling rates (dT/dt), the residence time (τ), and the atmosphere. Changes in the composition and structure of the precursor during thermal decomposition were investigated by thermogravimetric and differential thermal analysis (TGA/DTA) and FTIR spectroscopy. The particle morphology and structure were analysed by a combination of scanning electron microscopy and energy-dispersive X-ray spectroscopy (SEM/EDS) and by high-resolution transmission electron microscopy (HR-TEM). The structural refinement was based on the phase identification performed by X-ray powder diffraction (XRPD). The emission spectra were recorded within the range 325–800 nm by applying excitation wavelengths of 297 (YAP) and 450 nm (YAG). The employed synthesis conditions assured the formation of spherical, non-agglomerated particles with well-developed surfaces and diameters between 200 and 800 nm. For a predefined Y/Al ratio of 1:1, lower processing temperatures combined with longer heat treatments under stationary conditions resulted in a multiphase system, composed of YAP, YAG, and monoclinic yttrium aluminate (YAM) phases. However, a short heat treatment with a high heating rate (200 °C/min) at higher temperatures results in the formation of a kinetically favoured pure YAP hexagonal phase. On the other hand, for a predefined Y/Al ratio of 3:5, the generation of a thermodynamically favoured pure YAG phase has been confirmed, regardless of the applied heat-treatment conditions. Although incomplete, Ce3+ introduction into the host matrix has been detected by XRPD and luminescence measurements.
PB  - Hoboken, NJ : John Wiley & Sons
T2  - European Journal of Inorganic Chemistry
T1  - Synthesis of Cerium-Activated Yttrium Aluminate Based Fine Phosphors by an Aerosol Route
SP  - 2716
EP  - 2724
VL  - 16
DO  - 10.1002/ejic.201101053
UR  - https://hdl.handle.net/21.15107/rcub_dais_15973
ER  - 

@article{
author = "Mančić, Lidija and Lojpur, Vesna and Barroso, Ignacio and Rabanal, Maria Eugenia and Milošević, Olivera",
year = "2012",
abstract = "Polycrystalline fine powders of yttrium aluminate doped with Ce3+ were synthesised by spray pyrolysis of a polymeric precursor, which was obtained by dissolving the corresponding nitrates in a solution of ethylenediaminetetraacetic acid (EDTA) in ethylene glycol (EG). Aerosol decomposition was performed at 550 °C followed by an additional thermal treatment (900–1100 °C). The yield of either a single yttrium aluminium perovskite (YAP) phase or a single yttrium aluminium garnet (YAG) phase was investigated as a function of the predefined yttrium/aluminium ratio, the cerium doping concentration, the processing temperature, and the thermal-treatment regime, which included the variation of the heating and cooling rates (dT/dt), the residence time (τ), and the atmosphere. Changes in the composition and structure of the precursor during thermal decomposition were investigated by thermogravimetric and differential thermal analysis (TGA/DTA) and FTIR spectroscopy. The particle morphology and structure were analysed by a combination of scanning electron microscopy and energy-dispersive X-ray spectroscopy (SEM/EDS) and by high-resolution transmission electron microscopy (HR-TEM). The structural refinement was based on the phase identification performed by X-ray powder diffraction (XRPD). The emission spectra were recorded within the range 325–800 nm by applying excitation wavelengths of 297 (YAP) and 450 nm (YAG). The employed synthesis conditions assured the formation of spherical, non-agglomerated particles with well-developed surfaces and diameters between 200 and 800 nm. For a predefined Y/Al ratio of 1:1, lower processing temperatures combined with longer heat treatments under stationary conditions resulted in a multiphase system, composed of YAP, YAG, and monoclinic yttrium aluminate (YAM) phases. However, a short heat treatment with a high heating rate (200 °C/min) at higher temperatures results in the formation of a kinetically favoured pure YAP hexagonal phase. On the other hand, for a predefined Y/Al ratio of 3:5, the generation of a thermodynamically favoured pure YAG phase has been confirmed, regardless of the applied heat-treatment conditions. Although incomplete, Ce3+ introduction into the host matrix has been detected by XRPD and luminescence measurements.",
publisher = "Hoboken, NJ : John Wiley & Sons",
journal = "European Journal of Inorganic Chemistry",
title = "Synthesis of Cerium-Activated Yttrium Aluminate Based Fine Phosphors by an Aerosol Route",
pages = "2716-2724",
volume = "16",
doi = "10.1002/ejic.201101053",
url = "https://hdl.handle.net/21.15107/rcub_dais_15973"
}

Mančić, L., Lojpur, V., Barroso, I., Rabanal, M. E.,& Milošević, O.. (2012). Synthesis of Cerium-Activated Yttrium Aluminate Based Fine Phosphors by an Aerosol Route. in European Journal of Inorganic Chemistry
Hoboken, NJ : John Wiley & Sons., 16, 2716-2724.
https://doi.org/10.1002/ejic.201101053
https://hdl.handle.net/21.15107/rcub_dais_15973

Mančić L, Lojpur V, Barroso I, Rabanal ME, Milošević O. Synthesis of Cerium-Activated Yttrium Aluminate Based Fine Phosphors by an Aerosol Route. in European Journal of Inorganic Chemistry. 2012;16:2716-2724.
doi:10.1002/ejic.201101053
https://hdl.handle.net/21.15107/rcub_dais_15973 .

Mančić, Lidija, Lojpur, Vesna, Barroso, Ignacio, Rabanal, Maria Eugenia, Milošević, Olivera, "Synthesis of Cerium-Activated Yttrium Aluminate Based Fine Phosphors by an Aerosol Route" in European Journal of Inorganic Chemistry, 16 (2012):2716-2724,
https://doi.org/10.1002/ejic.201101053 .,
https://hdl.handle.net/21.15107/rcub_dais_15973 .

TY  - JOUR
AU  - Mančić, Lidija
AU  - Lojpur, Vesna
AU  - Barroso, Ignacio
AU  - Rabanal, Maria Eugenia
AU  - Milošević, Olivera
PY  - 2012
UR  - https://dais.sanu.ac.rs/123456789/477
AB  - Polycrystalline fine powders of yttrium aluminate doped with Ce3+ were synthesised by spray pyrolysis of a polymeric precursor, which was obtained by dissolving the corresponding nitrates in a solution of ethylenediaminetetraacetic acid (EDTA) in ethylene glycol (EG). Aerosol decomposition was performed at 550 °C followed by an additional thermal treatment (900–1100 °C). The yield of either a single yttrium aluminium perovskite (YAP) phase or a single yttrium aluminium garnet (YAG) phase was investigated as a function of the predefined yttrium/aluminium ratio, the cerium doping concentration, the processing temperature, and the thermal-treatment regime, which included the variation of the heating and cooling rates (dT/dt), the residence time (τ), and the atmosphere. Changes in the composition and structure of the precursor during thermal decomposition were investigated by thermogravimetric and differential thermal analysis (TGA/DTA) and FTIR spectroscopy. The particle morphology and structure were analysed by a combination of scanning electron microscopy and energy-dispersive X-ray spectroscopy (SEM/EDS) and by high-resolution transmission electron microscopy (HR-TEM). The structural refinement was based on the phase identification performed by X-ray powder diffraction (XRPD). The emission spectra were recorded within the range 325–800 nm by applying excitation wavelengths of 297 (YAP) and 450 nm (YAG). The employed synthesis conditions assured the formation of spherical, non-agglomerated particles with well-developed surfaces and diameters between 200 and 800 nm. For a predefined Y/Al ratio of 1:1, lower processing temperatures combined with longer heat treatments under stationary conditions resulted in a multiphase system, composed of YAP, YAG, and monoclinic yttrium aluminate (YAM) phases. However, a short heat treatment with a high heating rate (200 °C/min) at higher temperatures results in the formation of a kinetically favoured pure YAP hexagonal phase. On the other hand, for a predefined Y/Al ratio of 3:5, the generation of a thermodynamically favoured pure YAG phase has been confirmed, regardless of the applied heat-treatment conditions. Although incomplete, Ce3+ introduction into the host matrix has been detected by XRPD and luminescence measurements.
PB  - Hoboken, NJ : John Wiley & Sons
T2  - European Journal of Inorganic Chemistry
T1  - Synthesis of Cerium-Activated Yttrium Aluminate Based Fine Phosphors by an Aerosol Route
SP  - 2716
EP  - 2724
DO  - 10.1002/ejic.201101053
UR  - https://hdl.handle.net/21.15107/rcub_dais_477
ER  - 

@article{
author = "Mančić, Lidija and Lojpur, Vesna and Barroso, Ignacio and Rabanal, Maria Eugenia and Milošević, Olivera",
year = "2012",
abstract = "Polycrystalline fine powders of yttrium aluminate doped with Ce3+ were synthesised by spray pyrolysis of a polymeric precursor, which was obtained by dissolving the corresponding nitrates in a solution of ethylenediaminetetraacetic acid (EDTA) in ethylene glycol (EG). Aerosol decomposition was performed at 550 °C followed by an additional thermal treatment (900–1100 °C). The yield of either a single yttrium aluminium perovskite (YAP) phase or a single yttrium aluminium garnet (YAG) phase was investigated as a function of the predefined yttrium/aluminium ratio, the cerium doping concentration, the processing temperature, and the thermal-treatment regime, which included the variation of the heating and cooling rates (dT/dt), the residence time (τ), and the atmosphere. Changes in the composition and structure of the precursor during thermal decomposition were investigated by thermogravimetric and differential thermal analysis (TGA/DTA) and FTIR spectroscopy. The particle morphology and structure were analysed by a combination of scanning electron microscopy and energy-dispersive X-ray spectroscopy (SEM/EDS) and by high-resolution transmission electron microscopy (HR-TEM). The structural refinement was based on the phase identification performed by X-ray powder diffraction (XRPD). The emission spectra were recorded within the range 325–800 nm by applying excitation wavelengths of 297 (YAP) and 450 nm (YAG). The employed synthesis conditions assured the formation of spherical, non-agglomerated particles with well-developed surfaces and diameters between 200 and 800 nm. For a predefined Y/Al ratio of 1:1, lower processing temperatures combined with longer heat treatments under stationary conditions resulted in a multiphase system, composed of YAP, YAG, and monoclinic yttrium aluminate (YAM) phases. However, a short heat treatment with a high heating rate (200 °C/min) at higher temperatures results in the formation of a kinetically favoured pure YAP hexagonal phase. On the other hand, for a predefined Y/Al ratio of 3:5, the generation of a thermodynamically favoured pure YAG phase has been confirmed, regardless of the applied heat-treatment conditions. Although incomplete, Ce3+ introduction into the host matrix has been detected by XRPD and luminescence measurements.",
publisher = "Hoboken, NJ : John Wiley & Sons",
journal = "European Journal of Inorganic Chemistry",
title = "Synthesis of Cerium-Activated Yttrium Aluminate Based Fine Phosphors by an Aerosol Route",
pages = "2716-2724",
doi = "10.1002/ejic.201101053",
url = "https://hdl.handle.net/21.15107/rcub_dais_477"
}

Mančić, L., Lojpur, V., Barroso, I., Rabanal, M. E.,& Milošević, O.. (2012). Synthesis of Cerium-Activated Yttrium Aluminate Based Fine Phosphors by an Aerosol Route. in European Journal of Inorganic Chemistry
Hoboken, NJ : John Wiley & Sons., 2716-2724.
https://doi.org/10.1002/ejic.201101053
https://hdl.handle.net/21.15107/rcub_dais_477

Mančić L, Lojpur V, Barroso I, Rabanal ME, Milošević O. Synthesis of Cerium-Activated Yttrium Aluminate Based Fine Phosphors by an Aerosol Route. in European Journal of Inorganic Chemistry. 2012;:2716-2724.
doi:10.1002/ejic.201101053
https://hdl.handle.net/21.15107/rcub_dais_477 .

Mančić, Lidija, Lojpur, Vesna, Barroso, Ignacio, Rabanal, Maria Eugenia, Milošević, Olivera, "Synthesis of Cerium-Activated Yttrium Aluminate Based Fine Phosphors by an Aerosol Route" in European Journal of Inorganic Chemistry (2012):2716-2724,
https://doi.org/10.1002/ejic.201101053 .,
https://hdl.handle.net/21.15107/rcub_dais_477 .

TY  - JOUR
AU  - Barroso, Ignacio
AU  - Mena, I.
AU  - Gómez, Luz Stella
AU  - Milošević, Olivera
AU  - Rabanal, Maria Eugenia
PY  - 2012
UR  - https://dais.sanu.ac.rs/123456789/460
AB  - Mediante el método de Spray Pirólisis (SP) operando a 700ºC y en atmósfera de aire seco, se obtuvieron partículas nanoestructuradas de composición Gd2-xEuxO3 (χ= 0.05, 0.10 y 0.30) partiendo de las respectivas disoluciones acuosas de nitratos (0.1M). En el presente trabajo, se estudiaron tres muestras con distinta concentración de europio correspondiente al 1, 2 y 6% atómico. Posteriormente, las partículas nanoestructuradas obtenidas se sometieron a distintos tratamientos térmicos comprendidos entre 800 y 1000ºC/12h en atmósfera de aire.
Las partículas obtenidas se caracterizaron mediante técnicas de DRX, SEM, dispersión láser y medidas de fluorescencia en estado estacionario.
Se ha podido identificar la existencia de dos fases cristalinas cúbicas con distinta simetría (Ia-3 y Fm-3m) en las muestras “as-prepared”. Además, se ha demostrado la presencia de una fase de Gd2O3 monoclínica (C2/m), la cual desaparece con los tratamientos térmicos posteriores. En todas las muestras tratadas térmicamente se observa la estabilización de la fase cúbica más estable con simetría Ia-3.
Mediante medidas de emisión de fluorescencia se ha podido detectar en todas las muestras estudiadas la presencia de Eu2+ (λ=430nm), independientemente del porcentaje de Eu3+.
AB  - Spray Pyrolysis (SP) is performed at 700°C in dry air atmosphere using common nitrate aqueous solutions (0,1M) as precursor in order to obtain nanostructured particles with the composition Gd2-xEuxO3 (x= 0.05, 0.10 and 0.30). In this work, three samples with different atomic europium concentration (1, 2 and 6%) were studied. After, the obtained particles were subjected to different thermal treatments with varying temperatures between 800 and 1000oC/12 h in dry air atmosphere. The obtained particles were characterized by XRD, SEM techniques, laser dispersion and steady state fluorescence spectroscopy. The existence of two cubic phases with different symmetry cubic phases (Ia-3, Fm-3m) was identified within the "as-prepared" samples. Moreover, the presence of Gd2O3 monoclinic phase (C2/m) which disappears during the thermal treatments was proved. In all thermally treated samples, it was observed the stabilization of an only Ia-3 phase. Fluorescence emission measurements in all studied samples the presence of Eu2+ (λ= 430nm), whose intensity increases as long as the content of the monoclinic phase decreases of the Eu3+ percentage.
PB  - Madrid : Sociedad Espanola de Ceramica y Vidrio
T2  - Boletín de la Sociedad Espanola de Cerámica y Vidrio
T1  - Evaluación de las propiedades luminiscentes y detección de Eu2+ en partículas nanoestructuradas del sistema Gd2-xEuxO3 (x= 0.05, 0.10 y 0.30)
SP  - 255
EP  - 260
DO  - 10.3989/cyv.362012
UR  - https://hdl.handle.net/21.15107/rcub_dais_460
ER  - 

@article{
author = "Barroso, Ignacio and Mena, I. and Gómez, Luz Stella and Milošević, Olivera and Rabanal, Maria Eugenia",
year = "2012",
abstract = "Mediante el método de Spray Pirólisis (SP) operando a 700ºC y en atmósfera de aire seco, se obtuvieron partículas nanoestructuradas de composición Gd2-xEuxO3 (χ= 0.05, 0.10 y 0.30) partiendo de las respectivas disoluciones acuosas de nitratos (0.1M). En el presente trabajo, se estudiaron tres muestras con distinta concentración de europio correspondiente al 1, 2 y 6% atómico. Posteriormente, las partículas nanoestructuradas obtenidas se sometieron a distintos tratamientos térmicos comprendidos entre 800 y 1000ºC/12h en atmósfera de aire.
Las partículas obtenidas se caracterizaron mediante técnicas de DRX, SEM, dispersión láser y medidas de fluorescencia en estado estacionario.
Se ha podido identificar la existencia de dos fases cristalinas cúbicas con distinta simetría (Ia-3 y Fm-3m) en las muestras “as-prepared”. Además, se ha demostrado la presencia de una fase de Gd2O3 monoclínica (C2/m), la cual desaparece con los tratamientos térmicos posteriores. En todas las muestras tratadas térmicamente se observa la estabilización de la fase cúbica más estable con simetría Ia-3.
Mediante medidas de emisión de fluorescencia se ha podido detectar en todas las muestras estudiadas la presencia de Eu2+ (λ=430nm), independientemente del porcentaje de Eu3+., Spray Pyrolysis (SP) is performed at 700°C in dry air atmosphere using common nitrate aqueous solutions (0,1M) as precursor in order to obtain nanostructured particles with the composition Gd2-xEuxO3 (x= 0.05, 0.10 and 0.30). In this work, three samples with different atomic europium concentration (1, 2 and 6%) were studied. After, the obtained particles were subjected to different thermal treatments with varying temperatures between 800 and 1000oC/12 h in dry air atmosphere. The obtained particles were characterized by XRD, SEM techniques, laser dispersion and steady state fluorescence spectroscopy. The existence of two cubic phases with different symmetry cubic phases (Ia-3, Fm-3m) was identified within the "as-prepared" samples. Moreover, the presence of Gd2O3 monoclinic phase (C2/m) which disappears during the thermal treatments was proved. In all thermally treated samples, it was observed the stabilization of an only Ia-3 phase. Fluorescence emission measurements in all studied samples the presence of Eu2+ (λ= 430nm), whose intensity increases as long as the content of the monoclinic phase decreases of the Eu3+ percentage.",
publisher = "Madrid : Sociedad Espanola de Ceramica y Vidrio",
journal = "Boletín de la Sociedad Espanola de Cerámica y Vidrio",
title = "Evaluación de las propiedades luminiscentes y detección de Eu2+ en partículas nanoestructuradas del sistema Gd2-xEuxO3 (x= 0.05, 0.10 y 0.30)",
pages = "255-260",
doi = "10.3989/cyv.362012",
url = "https://hdl.handle.net/21.15107/rcub_dais_460"
}

Barroso, I., Mena, I., Gómez, L. S., Milošević, O.,& Rabanal, M. E.. (2012). Evaluación de las propiedades luminiscentes y detección de Eu2+ en partículas nanoestructuradas del sistema Gd2-xEuxO3 (x= 0.05, 0.10 y 0.30). in Boletín de la Sociedad Espanola de Cerámica y Vidrio
Madrid : Sociedad Espanola de Ceramica y Vidrio., 255-260.
https://doi.org/10.3989/cyv.362012
https://hdl.handle.net/21.15107/rcub_dais_460

Barroso I, Mena I, Gómez LS, Milošević O, Rabanal ME. Evaluación de las propiedades luminiscentes y detección de Eu2+ en partículas nanoestructuradas del sistema Gd2-xEuxO3 (x= 0.05, 0.10 y 0.30). in Boletín de la Sociedad Espanola de Cerámica y Vidrio. 2012;:255-260.
doi:10.3989/cyv.362012
https://hdl.handle.net/21.15107/rcub_dais_460 .

Barroso, Ignacio, Mena, I., Gómez, Luz Stella, Milošević, Olivera, Rabanal, Maria Eugenia, "Evaluación de las propiedades luminiscentes y detección de Eu2+ en partículas nanoestructuradas del sistema Gd2-xEuxO3 (x= 0.05, 0.10 y 0.30)" in Boletín de la Sociedad Espanola de Cerámica y Vidrio (2012):255-260,
https://doi.org/10.3989/cyv.362012 .,
https://hdl.handle.net/21.15107/rcub_dais_460 .

TY  - CONF
AU  - Barroso, Ignacio
AU  - Gómez, Luz Stella
AU  - Rabanal, Maria Eugenia
AU  - Milošević, Olivera
PY  - 2011
UR  - https://dais.sanu.ac.rs/123456789/159
AB  - Poster presented at the Seventh International Conference on Mechanochemistry and Mechanical Alloying - INCOME 2011, Herceg Novi, Montenegro, August 31 – September 3, 2011
T1  - The morphology, structure and luminescent properties of Gd2O3:Eu synthesized by aerosol route and high energy ball milling
UR  - https://hdl.handle.net/21.15107/rcub_dais_159
ER  - 

@conference{
author = "Barroso, Ignacio and Gómez, Luz Stella and Rabanal, Maria Eugenia and Milošević, Olivera",
year = "2011",
abstract = "Poster presented at the Seventh International Conference on Mechanochemistry and Mechanical Alloying - INCOME 2011, Herceg Novi, Montenegro, August 31 – September 3, 2011",
title = "The morphology, structure and luminescent properties of Gd2O3:Eu synthesized by aerosol route and high energy ball milling",
url = "https://hdl.handle.net/21.15107/rcub_dais_159"
}

Barroso, I., Gómez, L. S., Rabanal, M. E.,& Milošević, O.. (2011). The morphology, structure and luminescent properties of Gd2O3:Eu synthesized by aerosol route and high energy ball milling. .
https://hdl.handle.net/21.15107/rcub_dais_159

Barroso I, Gómez LS, Rabanal ME, Milošević O. The morphology, structure and luminescent properties of Gd2O3:Eu synthesized by aerosol route and high energy ball milling. 2011;.
https://hdl.handle.net/21.15107/rcub_dais_159 .

Barroso, Ignacio, Gómez, Luz Stella, Rabanal, Maria Eugenia, Milošević, Olivera, "The morphology, structure and luminescent properties of Gd2O3:Eu synthesized by aerosol route and high energy ball milling" (2011),
https://hdl.handle.net/21.15107/rcub_dais_159 .

TY  - CONF
AU  - Barroso, Ignacio
AU  - Gómez, Luz Stella
AU  - Rabanal, Maria Eugenia
AU  - Milošević, Olivera
PY  - 2011
UR  - https://dais.sanu.ac.rs/123456789/152
AB  - Poster presented at the International Symposium on Advanced Complex Inorganic Nanomaterials (ACIN 2011), September 11-14, 2011 - Namur, Belgium
T1  - Optical Properties of Nanostructured Particles Synthesized by Spray Pyrolysis Route
UR  - https://hdl.handle.net/21.15107/rcub_dais_152
ER  - 

@conference{
author = "Barroso, Ignacio and Gómez, Luz Stella and Rabanal, Maria Eugenia and Milošević, Olivera",
year = "2011",
abstract = "Poster presented at the International Symposium on Advanced Complex Inorganic Nanomaterials (ACIN 2011), September 11-14, 2011 - Namur, Belgium",
title = "Optical Properties of Nanostructured Particles Synthesized by Spray Pyrolysis Route",
url = "https://hdl.handle.net/21.15107/rcub_dais_152"
}

Barroso, I., Gómez, L. S., Rabanal, M. E.,& Milošević, O.. (2011). Optical Properties of Nanostructured Particles Synthesized by Spray Pyrolysis Route. .
https://hdl.handle.net/21.15107/rcub_dais_152

Barroso I, Gómez LS, Rabanal ME, Milošević O. Optical Properties of Nanostructured Particles Synthesized by Spray Pyrolysis Route. 2011;.
https://hdl.handle.net/21.15107/rcub_dais_152 .

Barroso, Ignacio, Gómez, Luz Stella, Rabanal, Maria Eugenia, Milošević, Olivera, "Optical Properties of Nanostructured Particles Synthesized by Spray Pyrolysis Route" (2011),
https://hdl.handle.net/21.15107/rcub_dais_152 .

TY  - CONF
AU  - Rabanal, Maria Eugenia
AU  - Barroso, Ignacio
AU  - Gómez, Luz Stella
AU  - Milošević, Olivera
PY  - 2011
UR  - https://dais.sanu.ac.rs/123456789/672
AB  - The processing of europium-doped gadolinia (Gd2O3:Eu) nanostructured particles has been realized using the bottom-up chemical approaches either by a hot-wall spray pyrolysis technique (SP), starting from the aerosol of common nitrates precursors, or a high energy ball milling (HEBM) of acetate precursors. The former one yields high-purity nanostructured nonagglomerated particles having spherical morphology and high chemical homogeneity. The HEBM-derived particles are with irregular morphology, submicronic in size, having an amorphous structure after 12h of milling. The detailed study of the crystalline structure and luminescent properties were proceeded for the different europium concentrations (1, 2 and 6at%) by means of XRPD, SEM, DSC, FTIR and steady state-fluorescent spectroscopy. The phase development and structural changes, followed by Fullprof program, implied the nanocrystalline inner structure (crystallites < 20 nm) and the coexistence of the following crystal phases for as-synthesized SP samples: two cubic phases, having either a bcc (SG: Ia3) or a fcc (SG: Fm-3m) structure, and a monoclinic phase with the space group (SG) C2/m. In the cubic Ia3 phase the cell parameter was affected by the europium concentration and the thermal treatment temperature, followed with progressive increase in crystallite size. On the other side, the monoclinic phase concentration decreased after additional thermal treatments. Luminescence measurements have detected the presence of divalent europium near to 480 nm, aside to the typical trivalent europium spectra. This behavior could explain the increase in the emission intensity in the blue spectral region due to the divalent europium.
PB  - Belgrade : Materials Research Society of Serbia
C3  - VII International Conference on Mechanochemistry and Mechanical Alloying INCOME 2011: Programme and the Book of Abstracts
T1  - The morphology, structure and luminescent properties of Gd2O3:Eu synthesized by aerosol route and high energy ball milling
SP  - 94
EP  - 94
UR  - https://hdl.handle.net/21.15107/rcub_dais_672
ER  - 

@conference{
author = "Rabanal, Maria Eugenia and Barroso, Ignacio and Gómez, Luz Stella and Milošević, Olivera",
year = "2011",
abstract = "The processing of europium-doped gadolinia (Gd2O3:Eu) nanostructured particles has been realized using the bottom-up chemical approaches either by a hot-wall spray pyrolysis technique (SP), starting from the aerosol of common nitrates precursors, or a high energy ball milling (HEBM) of acetate precursors. The former one yields high-purity nanostructured nonagglomerated particles having spherical morphology and high chemical homogeneity. The HEBM-derived particles are with irregular morphology, submicronic in size, having an amorphous structure after 12h of milling. The detailed study of the crystalline structure and luminescent properties were proceeded for the different europium concentrations (1, 2 and 6at%) by means of XRPD, SEM, DSC, FTIR and steady state-fluorescent spectroscopy. The phase development and structural changes, followed by Fullprof program, implied the nanocrystalline inner structure (crystallites < 20 nm) and the coexistence of the following crystal phases for as-synthesized SP samples: two cubic phases, having either a bcc (SG: Ia3) or a fcc (SG: Fm-3m) structure, and a monoclinic phase with the space group (SG) C2/m. In the cubic Ia3 phase the cell parameter was affected by the europium concentration and the thermal treatment temperature, followed with progressive increase in crystallite size. On the other side, the monoclinic phase concentration decreased after additional thermal treatments. Luminescence measurements have detected the presence of divalent europium near to 480 nm, aside to the typical trivalent europium spectra. This behavior could explain the increase in the emission intensity in the blue spectral region due to the divalent europium.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "VII International Conference on Mechanochemistry and Mechanical Alloying INCOME 2011: Programme and the Book of Abstracts",
title = "The morphology, structure and luminescent properties of Gd2O3:Eu synthesized by aerosol route and high energy ball milling",
pages = "94-94",
url = "https://hdl.handle.net/21.15107/rcub_dais_672"
}

Rabanal, M. E., Barroso, I., Gómez, L. S.,& Milošević, O.. (2011). The morphology, structure and luminescent properties of Gd2O3:Eu synthesized by aerosol route and high energy ball milling. in VII International Conference on Mechanochemistry and Mechanical Alloying INCOME 2011: Programme and the Book of Abstracts
Belgrade : Materials Research Society of Serbia., 94-94.
https://hdl.handle.net/21.15107/rcub_dais_672

Rabanal ME, Barroso I, Gómez LS, Milošević O. The morphology, structure and luminescent properties of Gd2O3:Eu synthesized by aerosol route and high energy ball milling. in VII International Conference on Mechanochemistry and Mechanical Alloying INCOME 2011: Programme and the Book of Abstracts. 2011;:94-94.
https://hdl.handle.net/21.15107/rcub_dais_672 .

Rabanal, Maria Eugenia, Barroso, Ignacio, Gómez, Luz Stella, Milošević, Olivera, "The morphology, structure and luminescent properties of Gd2O3:Eu synthesized by aerosol route and high energy ball milling" in VII International Conference on Mechanochemistry and Mechanical Alloying INCOME 2011: Programme and the Book of Abstracts (2011):94-94,
https://hdl.handle.net/21.15107/rcub_dais_672 .