Solvothermal Synthesis of Crystalline Phase and Shape Controlled Sn4+-Doped TiO2 Nanocrystals: Effects of Reaction Solvent

被引：60

作者：

Liu, Jia ^{[1
]}

Zhao, Yin ^{[1
]}

Shi, Liyi ^{[1
]}

Yuan, Shuai ^{[1
]}

Fang, Jianhui ^{[1
]}

Wang, Zhuyi ^{[1
]}

Zhang, Meihong ^{[1
]}

机构：

[1] Shanghai Univ, Res Ctr Nanosci & Nanotechnol, Shanghai 200444, Peoples R China

来源：

ACS APPLIED MATERIALS & INTERFACES | 2011年 / 3卷 / 04期

基金：

中国国家自然科学基金;

关键词：

TiO2; crystalline phase; morphology; solvothermal; photocatalytic activity; IMPROVED PHOTOCATALYTIC ACTIVITY; ANATASE; NANOPARTICLES; TITANIA; MECHANISMS; STATES;

D O I：

10.1021/am2000642

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The Sn4+-doped TiO2 nanocrystals with controlled crystalline phase and morphology had been successfully prepared through easily adjusting the solvent system from the peroxo-metal-complex precursor by solvothermal method. The Sn4+-doped TiO2 nanocrystals were characterized by XRD, Raman, TEM, HRTEM, XPS, ICP-AES, BET, and UV-vis. The experimental results indicated that the Sn4+-doped TiO2 nanocrystals prepared in the pure water or predominant water system trend to form rodlike rutile, whereas the cubic-shaped anatase Sn4+-doped TiO2 nanocrystals can be obtained in the alcohol system. The growth mechanism and microstructure evolution of the Sn4+-doped TiO2 nanocrystals prepared in the different solvent systems are discussed. The liquid-phase photocatalytic degradation of phenol was used as a model reaction to test the photocatalytic activity of the synthesized materials. It was found that sample Sn4+-doped TiO2 prepared in 1-butanol showed the maximum photoactivity, which attributed to higher band gap, optimal crystalline phase and surface state modifications.

引用

页码：1261 / 1268

页数：8

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