Effect of Si doping on the photocatalytic activity and photoelectrochemical property of TiO2 nanoparticles

被引：53

作者：

Duc-Nguyen Bui ^{[1
]}

Kang, Shi-Zhao ^{[2
]}

Li, Xiangqing ^{[2
]}

Mu, Jin ^{[1
,2
]}

机构：

[1] E China Univ Sci & Technol, Sch Chem & Mol Engn, Key Lab Ultrafine Mat, Minist Educ, Shanghai 200237, Peoples R China

[2] Shanghai Inst Technol, Sch Chem & Environm Engn, Shanghai 201418, Peoples R China

来源：

CATALYSIS COMMUNICATIONS | 2011年 / 13卷 / 01期

基金：

中国国家自然科学基金;

关键词：

TiO2; nanoparticles; Si doping; Photoelectrochemical property; Photocatalytic activity; DOPED TIO2; WATER DECOMPOSITION; TITANIA; SILICA; HYDROLYSIS; STABILITY; NANOTUBES; TIO2-SIO2;

D O I：

10.1016/j.catcom.2011.06.016

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Si-doped TiO2 nanoparticles with anatase crystalline phase were prepared by a hydrothermal method using acetic acid as the solvent. Photoelectrochemical studies showed that the photocurrent value for the 15% Si-doped TiO2 electrode (54.4 mu A) was much higher than that of the pure TiO2 electrode (16.7 mu A). In addition, the 15% Si-doped TiO2 nanoparticles displayed the highest photocatalytic activity under ultraviolet light irradiation. So doping suitable amount of Si in TiO2 nanoparticles was profitable for transferring photogenerated electrons and inhibiting the recombination of photogenerated electrons and holes. As a result, the photocatalytic activity of TiO2 nanoparticles was improved. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：14 / 17

页数：4

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