Photocatalytic properties of in situ doped TiO2-nanotubes grown by rapid breakdown anodization

被引：21

作者：

Hahn, Robert ^{[1
]}

Stark, Martin ^{[1
]}

Killian, Manuela Sonja ^{[1
]}

Schmuki, Patrik ^{[1
]}

机构：

[1] Univ Erlangen Nurnberg, LKO WW4, Chair Surface Sci & Corros, Dept Mat Sci & Engn, D-91058 Erlangen, Germany

来源：

CATALYSIS SCIENCE & TECHNOLOGY | 2013年 / 3卷 / 07期

关键词：

TIO2; NANOTUBES; DEGRADATION; CHLORIDE; MODEL;

D O I：

10.1039/c3cy00021d

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：

In the present work, we demonstrate an in situ electrochemical doping approach during the growth of TiO2 nanotubular layers formed by rapid breakdown anodization (RBA). For this, several oxygen containing metal anions, as doping species (WO42 , Al(OH)(4) , SiO32, MoO42, SnO44 , CrO42 and MnO4-), were investigated as additives to the electrolyte and successfully incorporated into the nanotubular oxide during the ultrafast tube growth. A linear relationship between the concentration of anions in the electrolyte and the doping concentration in the oxide was found. The resulting doped layers were tested, after heat treatment, for their UV photocatalytic activity using the degradation of AO7 (an organic model compound routinely used for determining the kinetics of photocatalytic decomposition reactions).

引用

页码：1765 / 1770

页数：6

共 29 条

[11] Fast formation of aligned high-aspect ratio TiO2 nanotube bundles that lead to increased open circuit voltage when used in dye sensitized solar cells [J].