Preparation of fine, uniform nitrogen- and sulfur-modified TiO2 nanoparticles from titania nanotubes

被引：9

作者：

Grandcolas, Mathieu ^{[1
]}

Ye, Jinhua ^{[2
]}

机构：

[1] Natl Inst Mat Sci, ICYS, Tsukuba, Ibaraki 3050047, Japan

[2] Natl Inst Mat Sci, Photocatalyt Mat Ctr, Tsukuba, Ibaraki 3050047, Japan

来源：

SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS | 2010年 / 11卷 / 05期

关键词：

titania nanotube modification; photocatalysis; TiO2; doping; DOPED TIO2; PHOTOCATALYTIC ACTIVITY;

D O I：

10.1088/1468-6996/11/5/055001

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

TiO2 nanoparticles modified with nitrogen and sulfur were prepared from titania nanotubes by a facile wet chemistry method. The samples synthesized with different thiourea/TiO2 ratios showed a uniform nanoparticle size distribution centred at approximately 10 nm with a developed specific surface area of 246m(2) g(-1). These modified nanosized photocatalysts exhibited higher photocatalytic activity for the degradation of gaseous isopropanol than unmodified titania nanotubes under visible illumination. This could be attributed to the synergistic effects of a large specific surface area, strong absorption in the visible region, a redshift in the adsorption edge, and surface adsorption modification induced by nitrogen and sulfur compounds.

引用

页数：6

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