Microstructure and photocatalytic activity of titanium dioxide nanoparticles

被引：0

作者：

李春艳 ^{[1
]}

王江彬 ^{[2
]}

王乙潜 ^{[1
]}

机构：

[1] The Cultivation Base for the State Key Laboratory, Qingdao University

[2] Laiyang Zixilai Environmental Protection Technology Co. Ltd., North of Toll Station

来源：

Chinese Physics B | 2012年 / 21卷 / 09期

关键词：

titanium dioxide nanoparticles; high-resolution transmission electron microscopy; photocatalytic activity;

D O I：

暂无

中图分类号：

O614.411 []; O643.32 [催化反应];

学科分类号：

070301 ; 081704 ; 081705 ;

摘要：

Titanium dioxide nanoparticles with an average diameter of about 10 nm are fabricated using a sintering method. The degradation of methyl orange indicates that the photocatalytic efficiency is greatly enhanced, which is measured to be 62.81%. Transmission electron microscopy is used to investigate the microstructure of TiO 2 nanoparticles in order to correlate their photocatalytic properties. High-resolution transmission electron microscopy examinations show that all the nanoparticles belong to the anatase phase, and pure edge dislocations exist in some nanoparticles. The great enhancement of photocatalytic efficiency is attributed to two factors, the quantum size effect and the surface defects in the nanoparticles.

引用

页码：531 / 535

页数：5

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