NiOOH/Bi_(2)WO_(6)光阳极的制备与光电化学分解水性能  

Preparation of NiOOH/Bi_(2)WO_(6)Photoanode and Photoelectrochemical Water Splitting Performance

作　　者：范晓星[1] 邓运筹 江姗姗 陶然 FAN Xiao-xing;DENG Yun-chou;JIANG Shan-shan;TAO Ran(School of Physics,Liaoning University,Shenyang 110036,China)

机构地区：[1]辽宁大学物理学院,辽宁沈阳110036

出　　处：《辽宁大学学报(自然科学版)》2024年第4期289-297,共9页Journal of Liaoning University:Natural Sciences Edition

基　　金：辽宁省自然科学基金项目(2022-MS-170,2022-BS-108)。

摘　　要：光电化学分解水可将太阳能转化为氢能,是一种具有潜在应用价值的可再生能源利用技术,受到人们的广泛关注.本文采用水热法和电沉积法联合制备了羟基氧化镍/钨酸铋(NiOOH/Bi_(2)WO_(6))复合光阳极,通过改变助催化剂的担载量对复合光电极整体性能进行优化.最终优化后的NiOOH/Bi_(2)WO_(6)光阳极的光电流密度达到0.47 mA/cm^(2),是纯乌酸铋(Bi_(2)WO_(6))光阳极的1.7倍,NiOOH/Bi_(2)WO_(6)光阳极的单色光-电子转化效率在365 nm波长处达到1.18%.研究结果表明,负载助催化剂能够促进Bi_(2)WO_(6)光阳极中光生电子与空穴的分离效率,抑制光生电子空穴的表面复合,以提升光阳极的光电化学性能.Photoelectrochemical water splitting can convert solar energy into hydrogen energy,which is a promising renewable energy production technology and has attracted extensive attention.In this paper,NiOOH/Bi_(2)WO_(6)photoanode was prepared by hydrothermal method and electrodeposition method,and the performance of the composite photoelectrode was optimized by changing the amount of co-catalyst.The photocurrent density of the optimized NiOOH/Bi_(2)WO_(6)photoanode reaches 0.47 mA/cm^(2),which is 1.7 times that of the pure Bi_(2)WO_(6) photoanode.The incident photon-to-electron conversion efficiency of the NiOOH/Bi_(2)WO_(6)photoanode reaches 1.18%at a wavelength of 365 nm.The research results show that co-catalyst can promote the separation efficiency of photogenerated electrons and holes in the Bi_(2)WO_(6) photoanode,and inhibit the surface recombination of photogenerated electrons and holes,and enhance the photoelectrochemical performance of the photoelectrode.

关 键 词：光电化学 钨酸铋 羟基氧化镍 

分 类 号：O6[理学—化学] TB34[一般工业技术—材料科学与工程]