Fabrication of visible-light responsive S-F-codoped TiO2 nanotubes

被引：20

作者：

Chen XiuQin ^{[1
,2
]}

Su YaLing ^{[1
]}

Zhang XingWang ^{[1
]}

Lei LeCheng ^{[1
]}

机构：

[1] Zhejiang Univ, Inst Environm Pollut Control Technol, Hangzhou 310028, Peoples R China

[2] Zhejiang Coll Construct, Hangzhou 311231, Peoples R China

来源：

CHINESE SCIENCE BULLETIN | 2008年 / 53卷 / 13期

基金：

中国国家自然科学基金;

关键词：

F-S-codoping; titanium dioxide; nanotubes; visible light; photoelectrocatalysis;

D O I：

10.1007/s11434-008-0279-4

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Fabrication and S-F-codoping of TiO2 nanotubes were carried out by a one-step electrochemical anodization process to extend the photoresponse of TiO2 to the visible-light region. The prepared samples were annealed in air and detected by SEM, XRD, XPS and UV-vis DRS spectrophotometer. The results showed that the average tube diameter of the nanotubes was 150 nm and the average tube length was 400 nm. The doped TiO2 nanotubes exhibited strong absorption in visible-light region. Photoelectrocatalytic degradation efficiency of 4-CP over S-F-codoped TiO2 nanotubes was 39.7% higher than that of only-F-doped sample. Moreover, sulfur and fluorine codoped into substitutional sites of TiO2 had been proven to be indispensable for strong response and high photocatalytic activity under visible light, as assessed by XPS.

引用

页码：1983 / 1987

页数：5

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