Hydrothermal synthesis and properties of solid solutions and composite nanoparticles in the TiO2-SnO2 system

被引：26

作者：

Hirano, Masanori ^{[1
]}

Dozono, Hayato ^{[1
]}

Kono, Takeshi ^{[1
]}

机构：

[1] Aichi Inst Technol, Fac Engn, Dept Appl Chem, Toyota 4700392, Japan

来源：

MATERIALS RESEARCH BULLETIN | 2011年 / 46卷 / 09期

基金：

日本学术振兴会;

关键词：

Ceramics; Chemical synthesis; Electron microscopy; X-ray diffraction; Catalytic properties; ANATASE-TYPE TIO2; PHOTOCATALYTIC ACTIVITY; TITANIUM-DIOXIDE; PHOTOELECTROCHEMICAL BEHAVIOR; SPINODAL DECOMPOSITION; ALIOVALENT DOPANTS; PHASE-DIAGRAM; GAS SENSORS; THIN-FILMS; SNO2;

D O I：

10.1016/j.materresbull.2011.05.016

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Solid solutions and composite nanoparticles in the TiO2-SnO2 system were directly formed via the hydrothermal treatment of precursor solutions of TiCl4 and SnCl4 under weakly basic conditions in the presence of urea. The rutile-type (Ti, Sn)O-2 solid solutions were formed in the composition range of Ti 0- 70 mol%. The composite nanoparticles consisting of anatase- and rutile-type phases were formed at the composition of Ti 80 and Ti 90 mol%. The change in the lattice parameters a(0) and c(0) of the rutile-type solid solutions followed the Vegard Law. The crystallite size of the rutile-type solid solutions was in the range of 5-10 nm. The diffuse reflectance spectra varied with changing Ti content in the precipitates. The photocatalytic activity of composite nanoparticles synthesized at 240 degrees C was higher than that synthesized at 180 degrees C. The composite nanoparticles consisting of anatase- and rutile-type phases with compositions Ti0.90Sn0.10O2 and TiO0.80Sn0.20O2 showed improved photocatalytic activity. (C) 2011 Elsevier Ltd. All rights

引用

页码：1384 / 1390

页数：7

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