电化学2013，Vol.19Issue(1)：71-78,8.
Na2CO3对TiO2纳米管电极表面光电化学水分解反应的催化作用研究
Sodium Carbonate Catalyzed Photoelectrochemical Water Splitting over TiO2 Nanotubes Photoanode
摘要
Abstract
Surface recombination of the photogenerated electron-hole pairs at semiconductor/electrolyte interface is one of the most essential reasons responsible for lowering photoconversion efficiency (φ) of light to chemical energy for photoelectrochemical (PEC) water splitting reaction. In this paper,the catalytic effect of sodium carbonate on the oxygen evolution reaction(OER) over TiO2 nanotube photoanode during PEC water splitting was investigated by performing photocurrent and ac impedance measurements. It was demonstrated that the addiction of 1 mmol-L-1 Na2CO3 in 0.5 mol·L-1 NaClO4 electrolyte can effectively improve the charge transfer properties for the photogenerated holes across TiO2/electrolyte interface and inhibit the recombination of photogenerated carriers at this interface. As a result,both the measured photocurrent was increased and the photoconversion efficiency was enhanced.关键词
光生空穴/表面复合/光电流/阳极析氧/Mott-Schottky分析Key words
photogenerated holes/ surface recombination/ photocurrent/ anodic oxygen evolution/ Mott-Schottky analysis分类
化学化工引用本文复制引用
孔德生,王静,张学迪,赵曦,王超,冯媛媛,李文娟..Na2CO3对TiO2纳米管电极表面光电化学水分解反应的催化作用研究[J].电化学,2013,19(1):71-78,8.基金项目
山东省自然科学基金(No.ZR2010EM026)和山东省优秀中青年科学家奖励基金(No.BS2011NJ009)资助 （No.ZR2010EM026）
