In-situ Cr doped anodized TiO2 nanotubes with increased photocurrent response

被引：21
|
作者：
Mishra, Trilochan [1 ,2 ]
Wang, Lei [1 ]
Hahn, Robert [1 ]
Schmuki, Patrik [1 ,3 ]
机构：
[1] Univ Erlangen Nurnberg, Dept Mat Sci, LKO WW4, D-91058 Erlangen, Germany
[2] CSIR Natl Met Lab, CSE Div, Jamshedpur 831007, Bihar, India
[3] King Abdulaziz Univ, Dept Chem, Jeddah 21413, Saudi Arabia
来源：
ELECTROCHIMICA ACTA | 2014年 / 132卷
关键词：
SENSITIZED SOLAR-CELLS; ENHANCED EFFICIENCY; VISIBLE-LIGHT; TITANIUM; WATER; PHOTOCATALYSTS; ANODIZATION; MESOSPONGE; ELECTRODE; CHROMIUM;
D O I：
10.1016/j.electacta.2014.03.101
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Low-content chromium (Cr) doped titania nanotubes were grown by electrochemical anodization of Ti-Cr alloys in ethylene glycol electrolyte at varying time of anodisation to control the length of the tubes. Surface properties and photocurrent response of anodized layers after annealing at 450-750 degrees C were evaluated. Nanotubes with 0.02 at% Cr doping activated at 450 degrees C show a considerably increased photocurrent in comparison to pure anatase titania. This photocurrent increase of the Cr doped titania nanotubes is ascribed to higher anatase crystallinity and lower photoelectrochemical recombination losses. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：410 / 415
页数：6
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