Thermal Decomposition of Some Sol-Gel Precursors for Mesoporous TiO2-Based Thin Films for Chemorezistive Environmental Sensors

Dediu, Violeta; Musat, Viorica; Jurca, Bogdan; Cristea, Nicolae Ionut

Violeta Dediu, Viorica Musat, Bogdan Jurca, Nicolae Ionut Cristea

Thermal Decomposition of Some Sol-Gel Precursors for Mesoporous TiO2-Based Thin Films for Chemorezistive Environmental Sensors

Abstract:

This paper presents a comparative study on the thermal decomposition in air and FTIR analyses of complex sol-gel precursors used for the deposition of three titania based mesoporous thin films: TiO2, Nb-doped TiO2 and carbon nanotubes (MWCNT)-doped TiO2. The effect of doping with Nb or adding MWCNT on the thermal decomposition of titanium isopropoxide-based precursor and crystallization of TiO2 was investigated through thermogravimetric analysis (TGA), differential thermal analysis (DTA), and Fourier Transform Infrared (FTIR) data. TG-DTA results showed two main exothermic peaks were observed in all samples for the temperature range 280-300 oC and 429-444 oC, corresponding to isopropoxide oxidative decomposition and anatase crystallization. In case of Nb doped TiO2 an oxidative decomposition of Nb ethoxide appears at 198 °C. The acidified MWCNT are thermally stable up to 500°C. Doping TiO2 causes peaks shift to higher temperatures. Also, the effect of heating rate on thermal decomposition for precursors was studied. FTIR analyses were conducted on precursor systems thermally treated at different temperature to track the chemical transformations during the films formation.

Keywords:
TiO2; TG-DTA-FTIR; Sol-gel; Functionalized MWCNT

Issue: 2017, Volume 68, Issue 8

Pages: 1703-1707

Publication date: 2017/9/15

https://doi.org/10.37358/RC.17.8.5748

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This article is published under the Creative Commons Attribution 4.0 International License

Citation Styles

Cite this article as:
DEDIU, V., MUSAT, V., JURCA, B., CRISTEA, N.I., Thermal Decomposition of Some Sol-Gel Precursors for Mesoporous TiO2-Based Thin Films for Chemorezistive Environmental Sensors, Rev. Chim., 68(8), 2017, 1703-1707.

Vancouver
Dediu V, Musat V, Jurca B, Cristea NI. Thermal Decomposition of Some Sol-Gel Precursors for Mesoporous TiO2-Based Thin Films for Chemorezistive Environmental Sensors. Rev. Chim.[internet]. 2017 Aug;68(8):1703-1707. Available from: https://doi.org/10.37358/RC.17.8.5748

APA 6th edition
Dediu, V., Musat, V., Jurca, B. & Cristea, N.I. (2017). Thermal Decomposition of Some Sol-Gel Precursors for Mesoporous TiO2-Based Thin Films for Chemorezistive Environmental Sensors. Revista de Chimie, 68(8), 1703-1707. https://doi.org/10.37358/RC.17.8.5748

Harvard
Dediu, V., Musat, V., Jurca, B., Cristea, N.I. (2017). 'Thermal Decomposition of Some Sol-Gel Precursors for Mesoporous TiO2-Based Thin Films for Chemorezistive Environmental Sensors', Revista de Chimie, 68(8), pp. 1703-1707. https://doi.org/10.37358/RC.17.8.5748

IEEE
V. Dediu, V. Musat, B. Jurca, N.I. Cristea, "Thermal Decomposition of Some Sol-Gel Precursors for Mesoporous TiO2-Based Thin Films for Chemorezistive Environmental Sensors". Revista de Chimie, vol. 68, no. 8, pp. 1703-1707, 2017. [online]. https://doi.org/10.37358/RC.17.8.5748

Text
Violeta Dediu, Viorica Musat, Bogdan Jurca, Nicolae Ionut Cristea,
Thermal Decomposition of Some Sol-Gel Precursors for Mesoporous TiO2-Based Thin Films for Chemorezistive Environmental Sensors,
Revista de Chimie,
Volume 68, Issue 8,
2017,
Pages 1703-1707,
ISSN 2668-8212,
https://doi.org/10.37358/RC.17.8.5748.
(https://revistadechimie.ro/Articles.asp?ID=5748)
Keywords: TiO2; TG-DTA-FTIR; Sol-gel; Functionalized MWCNT

RIS
TY - JOUR
T1 - Thermal Decomposition of Some Sol-Gel Precursors for Mesoporous TiO2-Based Thin Films for Chemorezistive Environmental Sensors
A1 - Dediu, Violeta
A2 - Musat, Viorica
A3 - Jurca, Bogdan
A4 - Cristea, Nicolae Ionut
JF - Revista de Chimie
JO - Rev. Chim.
PB - Revista de Chimie SRL
SN - 2668-8212
Y1 - 2017
VL - 68
IS - 8
SP - 1703
EP - 1707
UR - https://doi.org/10.37358/RC.17.8.5748
KW - TiO2
KW - TG-DTA-FTIR
KW - Sol-gel
KW - Functionalized MWCNT
ER -

BibTex
@article{RevCh2017P1703,
author = {Dediu Violeta and Musat Viorica and Jurca Bogdan and Cristea Nicolae Ionut},
title = {Thermal Decomposition of Some Sol-Gel Precursors for Mesoporous TiO2-Based Thin Films for Chemorezistive Environmental Sensors},
journal = {Revista de Chimie},
volume = {68},
number = {8},
pages = {1703-1707},
year = {2017},
issn = {2668-8212},
doi = {https://doi.org/10.37358/RC.17.8.5748},
url = {https://revistadechimie.ro/Articles.asp?ID=5748}
}

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