Surface modification of hematite photoanode films with rhodium

被引：6
|
作者：
Zhang Minglong [1 ,2 ,3 ]
Luo Wenjun [1 ,2 ]
Li Zhaosheng [1 ,2 ]
Yu Tao [1 ]
Zou Zhigang [1 ]
机构：
[1] Nanjing Univ, Natl Lab Solid Microstruct, Ecomat & Renewable Energy Res Ctr, Nanjing 210093, Jiangsu, Peoples R China
[2] Nanjing Univ, Dept Mat Sci & Engn, Nanjing 210093, Jiangsu, Peoples R China
[3] Xuzhou Airforce Coll, Dept Airfield, Xuzhou 221000, Peoples R China
来源：
RARE METALS | 2011年 / 30卷
基金：
中国国家自然科学基金;
关键词：
hematite; photoelectrochemistry; solar energy storage; hydrogen; OXYGEN-EVOLVING CATALYST; WATER OXIDATION; ALPHA-FE2O3; ELECTRODES; FERRIC-OXIDE; NANOSTRUCTURE; SI;
D O I：
10.1007/s12598-011-0233-5
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The Si and Ti codoped hematite (alpha-Fe2O3) photoanode film was dripped by Na3RhCl6 center dot 12H(2)O alkaline solution to negatively shift the onset potential of alpha-Fe2O3 photoanode by similar to 200 mV. The photocurrent densities of as-treated and untreated alpha-Fe2O3 are 0.6, and 0.08 mA/cm(2), respectively at 0 V vs. Ag/AgCl in the electrolyte of 1 M NaOH aqueous solution under 500 W xenon illumination. The IPCE (incident photon to current efficiency) of the as-treated alpha-Fe2O3 is 5.2% at 365 nm, 0 V vs. Ag/AgCl. A plausible explanation is proposed for the enhanced alpha-Fe2O3 photoelectrochemical responses. The result shows that rhodium could be ranked as an efficient oxygen evolution catalyst.
引用
收藏
页码：38 / 41
页数：4
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