Thermoanalytical study of acetylacetonate-modified titanium(IV) isopropoxide as a precursor for TiO2 films

被引：52

作者：

Krunks, M

Oja, I

Tonsuaadu, K

Es-Souni, M

Gruselle, M

Niinistö, L

机构：

[1] Tallinn Univ Technol, Fac Chem & Mat Technol, EE-19086 Tallinn, Estonia

[2] Kiel Univ Appl Sci, Inst Mat & Surface Technol, DE-21149 Kiel, Germany

[3] Univ Paris 06, CNRS, UMR 7071, Lab Inorgan Chem & Mol Mat, F-75252 Paris, France

[4] Helsinki Univ Technol, Inorgan & Analyt Chem Lab, FIN-02015 Espoo, Finland

来源：

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2005年 / 80卷 / 02期

基金：

芬兰科学院;

关键词：

DTA; EGA-FTIR; sol-gel; TG; titania; titanium complex;

D O I：

10.1007/s10973-005-0681-y

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Thermal decomposition of dried TiO2 gel, obtained by hydrolysing acetylacetonate-modified titanium(IV) isopropoxide, was monitored by simultaneous TG/DTA/EGA-FTIR measurements in dynamic air up to 900 degrees C. XRD and FTIR were employed to identify the solid reaction products. Thermal degradation of the TiO2 gel consists of five distinct mass loss steps, the total mass loss being 43.8%. EGA by FTIR revealed the release of H2O below 120 degrees C; followed by acetone, isopropyl acetate and 1-propanol around 200 - 300 degrees C, and finally CO and CO2 up to 550 degrees C. Highly exothermic reaction at 410- 550 degrees C is caused by the combustion of carbon residues. Crystalline TiO2-anatase is formed around 500 degrees C and TiO2-rutile close to 800 degrees C.

引用

页码：483 / 488

页数：6

共 22 条

[1]

BRINKER CJ, 1990, SOL GEL SCI PHYSICS, P55

[2] The sol-gel transformation of TIPT coatings: a FTIR study [J].