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TiO2-based nanopowders obtained from different Ti-alkoxides

被引：27
作者：
Crisan, M.
Braileanu, Ana
Raileanu, M.
Crisan, D.
Teodorescu, V. S.
Birjega, R.
Marinescu, V. E.
Madarasz, J.
Pokol, G.
机构：
[1] Roumanian Acad, Inst Phys Chem Ilie Murgulescu, Bucharest 060021, Romania
[2] Natl Inst Phys Mat, Bucharest, Magurele, Romania
[3] Natl Inst Lasers Plasma & Radiat Phys, Bucharest, Romania
[4] ICPE CA, INCDIE, Bucharest 030138, Romania
[5] Budapest Univ Technol & Econ, Inst Gen & Analyt Chem, H-1521 Budapest, Hungary
来源：
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2007年 / 88卷 / 01期
关键词：
S-doped TiO2; sol-gel method; thermal analysis; TiO2; nanopowders;
D O I：
10.1007/s10973-006-8125-x
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Pure TiO2 and S-doped TiO2 sol-gel nanopowders were prepared by controlled hydrolysis-condensation of titanium alkoxides. The influence of different Ti-alkoxides (tetraethyl-, tetraisopropyl- and tetrabutyl-orthotitanate) used in obtaining TiO2 porous materials in similar conditions (water/alkoxide ratio, solvent/alkoxide ratio, pH and temperature of reaction) has been investigated. The relationship between the synthesis conditions and the properties of titania nanosized powders, such as thermal stability, phase composition, crystallinity, morphology and size of particles, BET surface area and the influence of dopant was investigated. The nature of the alkyl group strongly influences the main characteristics of the obtained oxide powders, fact which is pointed out by thermal analysis, X-ray diffraction, TEM and BET surface area measurements.
引用
收藏
页码：171 / 176
页数：6
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