F-B-codoping of anodized TiO2 nanotubes using chemical vapor deposition

被引：75

作者：

Su, Yaling ^{[1
]}

Zhang, Xingwang ^{[1
]}

Han, Song ^{[1
]}

Chen, Xiuqin ^{[1
]}

Lei, Lecheng ^{[1
]}

机构：

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

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2007年 / 9卷 / 09期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

TiO(2)nanotubes; F-B-codoping; photoelectrochemistry; chemical vapor;

D O I：

10.1016/j.elecom.2007.06.038

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Chemical vapor deposition (CVD) was firstly used to simultaneously codope fluorine and boron into TiO2 nanotubes anodized Ti in C2H2O4 - 2H(2)O + NH4F electrolyte. F-B-codoping was successfully carried out by annealing the anodized TiO2 nanotubes through CVD, as evidenced from XPS analysis. SEM images showed that the higher the annealing temperature, the greater structure damage of F-B-codoped sample. XRD results confirmed that annealing temperature had an influence on the phase structure and boron and fluorine impurities could retard anatase-rutile phase transition. F-B-codoped samples displayed remarkably strong absorption in both UV and visible range. Under visible-light irradiation, F-B-codoped samples showed the higher I-ph and catalytic activity in methyl orange photoelectrodegradation than F-doped sample and B-doped sample. This showed a convincing evidence of F-B-codoping of TiO2 had an obvious synergistic effect on the enhancement of photocurrents and photoelectrocatalytic activity. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：2291 / 2298

页数：8

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