Influence of calcination temperature on the structure, morphology and optical properties of electrospun pseudobrookite nanofibers
Аутори
Vasiljević, Zorka Ž.Dojčinović, Milena P.
Vujančević, Jelena
Spreitzer, Matjaž
Kovač, Janez
Janković-Čaštvan, Ivona
Bartolić, Dragana
Marković, Smilja
Tadić, Nenad
Nikolić, Maria Vesna
Конференцијски прилог (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Novel crystalline iron-titanate fibers were synthesized for the first time to the best of our knowledge, through a simple, low cost electrospinning method followed by calcination treatment at different temperatures (500–750 °C for 3 h and at 500 °C for 6 h and at 550 °C for 4 h). The fibers were prepared from a precursor solution containing polyvinylpyrrolidone (PVP), iron(III) nonahydrate, titanium isopropoxide, N,N-Dimethylformamide and ethanol. As spun fibers were smooth, straight, beadless and uniform forming a nonwoven fibrous mat, with an average diameter of ca. 205 nm. Upon calcination in air the PVP matrice was removed and XRD and FTIR analysis showed that the duration of the calcination process, besides the temperature, had a direct influence on phase formation. Pure phase of pseudobrookite was obtained at 600 °C, 500 °C for 6 h and at 550 °C for 4 h. In addition, the morphology of obtained nanofibers was directly affected by the calcination temperature. The surface of fibers ...obtained after calcination was no longer smooth and the fiber diameter decreased due to complete degradation of PVP. At 700 oC and 750 °C, fibers were thicker which can be attributed to growth of Fe2TiO5 nanoparticles and simultaneous coalescence of small particles. All samples exhibited a type IV nitrogen adsorption isotherm with a type- H3 indicating slit-shaped mesoporous structure. The BET surface areas of 500 °C for 6 h, 550 °C for 4 h and 600 °C for 3 h were estimated to be 62, 38.7 and 33.2 m2/g, respectively.
Кључне речи:
calcination / iron-titanate fibers / pseudobrookite / nanofibersИзвор:
Programme and book of abstracts / 14th ECerS Conference for Young Scientists in Ceramics (CYSC-2021), October 20-23, 2021, Novi Sad, 2021, 2021, 124-124Издавач:
- Novi Sad : Faculty of Technology
Финансирање / пројекти:
- Министарство науке, технолошког развоја и иновација Републике Србије, институционално финансирање - 200175 (Институт техничких наука САНУ, Београд) (RS-MESTD-inst-2020-200175)
Институција/група
Институт техничких наука САНУ / Institute of Technical Sciences of SASATY - CONF AU - Vasiljević, Zorka Ž. AU - Dojčinović, Milena P. AU - Vujančević, Jelena AU - Spreitzer, Matjaž AU - Kovač, Janez AU - Janković-Čaštvan, Ivona AU - Bartolić, Dragana AU - Marković, Smilja AU - Tadić, Nenad AU - Nikolić, Maria Vesna PY - 2021 UR - https://dais.sanu.ac.rs/123456789/15358 AB - Novel crystalline iron-titanate fibers were synthesized for the first time to the best of our knowledge, through a simple, low cost electrospinning method followed by calcination treatment at different temperatures (500–750 °C for 3 h and at 500 °C for 6 h and at 550 °C for 4 h). The fibers were prepared from a precursor solution containing polyvinylpyrrolidone (PVP), iron(III) nonahydrate, titanium isopropoxide, N,N-Dimethylformamide and ethanol. As spun fibers were smooth, straight, beadless and uniform forming a nonwoven fibrous mat, with an average diameter of ca. 205 nm. Upon calcination in air the PVP matrice was removed and XRD and FTIR analysis showed that the duration of the calcination process, besides the temperature, had a direct influence on phase formation. Pure phase of pseudobrookite was obtained at 600 °C, 500 °C for 6 h and at 550 °C for 4 h. In addition, the morphology of obtained nanofibers was directly affected by the calcination temperature. The surface of fibers obtained after calcination was no longer smooth and the fiber diameter decreased due to complete degradation of PVP. At 700 oC and 750 °C, fibers were thicker which can be attributed to growth of Fe2TiO5 nanoparticles and simultaneous coalescence of small particles. All samples exhibited a type IV nitrogen adsorption isotherm with a type- H3 indicating slit-shaped mesoporous structure. The BET surface areas of 500 °C for 6 h, 550 °C for 4 h and 600 °C for 3 h were estimated to be 62, 38.7 and 33.2 m2/g, respectively. PB - Novi Sad : Faculty of Technology C3 - Programme and book of abstracts / 14th ECerS Conference for Young Scientists in Ceramics (CYSC-2021), October 20-23, 2021, Novi Sad, 2021 T1 - Influence of calcination temperature on the structure, morphology and optical properties of electrospun pseudobrookite nanofibers SP - 124 EP - 124 UR - https://hdl.handle.net/21.15107/rcub_dais_15358 ER -
@conference{ author = "Vasiljević, Zorka Ž. and Dojčinović, Milena P. and Vujančević, Jelena and Spreitzer, Matjaž and Kovač, Janez and Janković-Čaštvan, Ivona and Bartolić, Dragana and Marković, Smilja and Tadić, Nenad and Nikolić, Maria Vesna", year = "2021", abstract = "Novel crystalline iron-titanate fibers were synthesized for the first time to the best of our knowledge, through a simple, low cost electrospinning method followed by calcination treatment at different temperatures (500–750 °C for 3 h and at 500 °C for 6 h and at 550 °C for 4 h). The fibers were prepared from a precursor solution containing polyvinylpyrrolidone (PVP), iron(III) nonahydrate, titanium isopropoxide, N,N-Dimethylformamide and ethanol. As spun fibers were smooth, straight, beadless and uniform forming a nonwoven fibrous mat, with an average diameter of ca. 205 nm. Upon calcination in air the PVP matrice was removed and XRD and FTIR analysis showed that the duration of the calcination process, besides the temperature, had a direct influence on phase formation. Pure phase of pseudobrookite was obtained at 600 °C, 500 °C for 6 h and at 550 °C for 4 h. In addition, the morphology of obtained nanofibers was directly affected by the calcination temperature. The surface of fibers obtained after calcination was no longer smooth and the fiber diameter decreased due to complete degradation of PVP. At 700 oC and 750 °C, fibers were thicker which can be attributed to growth of Fe2TiO5 nanoparticles and simultaneous coalescence of small particles. All samples exhibited a type IV nitrogen adsorption isotherm with a type- H3 indicating slit-shaped mesoporous structure. The BET surface areas of 500 °C for 6 h, 550 °C for 4 h and 600 °C for 3 h were estimated to be 62, 38.7 and 33.2 m2/g, respectively.", publisher = "Novi Sad : Faculty of Technology", journal = "Programme and book of abstracts / 14th ECerS Conference for Young Scientists in Ceramics (CYSC-2021), October 20-23, 2021, Novi Sad, 2021", title = "Influence of calcination temperature on the structure, morphology and optical properties of electrospun pseudobrookite nanofibers", pages = "124-124", url = "https://hdl.handle.net/21.15107/rcub_dais_15358" }
Vasiljević, Z. Ž., Dojčinović, M. P., Vujančević, J., Spreitzer, M., Kovač, J., Janković-Čaštvan, I., Bartolić, D., Marković, S., Tadić, N.,& Nikolić, M. V.. (2021). Influence of calcination temperature on the structure, morphology and optical properties of electrospun pseudobrookite nanofibers. in Programme and book of abstracts / 14th ECerS Conference for Young Scientists in Ceramics (CYSC-2021), October 20-23, 2021, Novi Sad, 2021 Novi Sad : Faculty of Technology., 124-124. https://hdl.handle.net/21.15107/rcub_dais_15358
Vasiljević ZŽ, Dojčinović MP, Vujančević J, Spreitzer M, Kovač J, Janković-Čaštvan I, Bartolić D, Marković S, Tadić N, Nikolić MV. Influence of calcination temperature on the structure, morphology and optical properties of electrospun pseudobrookite nanofibers. in Programme and book of abstracts / 14th ECerS Conference for Young Scientists in Ceramics (CYSC-2021), October 20-23, 2021, Novi Sad, 2021. 2021;:124-124. https://hdl.handle.net/21.15107/rcub_dais_15358 .
Vasiljević, Zorka Ž., Dojčinović, Milena P., Vujančević, Jelena, Spreitzer, Matjaž, Kovač, Janez, Janković-Čaštvan, Ivona, Bartolić, Dragana, Marković, Smilja, Tadić, Nenad, Nikolić, Maria Vesna, "Influence of calcination temperature on the structure, morphology and optical properties of electrospun pseudobrookite nanofibers" in Programme and book of abstracts / 14th ECerS Conference for Young Scientists in Ceramics (CYSC-2021), October 20-23, 2021, Novi Sad, 2021 (2021):124-124, https://hdl.handle.net/21.15107/rcub_dais_15358 .