无机材料学报2016，Vol.31Issue(3)：269-273,5.DOI:10.15541/jim20150467
AgX(Cl,Br)-TiO2复合材料光电化学研究
Photoelectrochemical Properties of AgX(Cl, Br)-TiO2 Heterojunction Nanocomposites
摘要
Abstract
Sunlight-driven photoelectrochemical water splitting into hydrogen and oxygen presents a great way to develop green solar energy. Titanium dioxide is believed to be one of the most stable photoanode materials. Here, ordered TiO2 nanotube arrays were prepared by anodic oxidation method. Then AgCl or AgBr were successfully de-posited on TiO2 nanotube arrays by dipping method. The morphology and crystal structures of AgX-TiO2 heterojunc-tions were tested by X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM). The results showed that AgCl was deposited with 50 nm thickness and 1μm length structure, while AgBr can be evenly dis-persed on surface of TiO2 nanotube arrays. AgX amount increased with extending impregnation recycling time, and formed different surface morphology of nanotube arrays. Electrochemical test indicated that suitable amount of AgBr in the TiO2nanotube arrays improved the photoelectrochemical properties, an optimum photoconversion efficiency obtained at 2.67%. Excess deposited AgX will lead to incompletely utilizing sunlight due to blocked nanotube arrays, and result in lower photoconversion efficiency.关键词
阳极氧化法/二氧化钛纳米管/卤化银/光电化学Key words
anodic oxidation method/nanotube/TiO2/photoelectrochemical properties分类
矿业与冶金引用本文复制引用
张亚萍,张安玉,于濂清,董开拓,李焰,郝兰众..AgX(Cl,Br)-TiO2复合材料光电化学研究[J].无机材料学报,2016,31(3):269-273,5.基金项目
国家自然科学基金(21476262) （21476262）
青岛市科技发展计划(14-2-4-108-jch) （14-2-4-108-jch）
中央高校基本科研业务经费(R1510059A, 14CX05038A) National Natural Science Foundation of China (21476262) （R1510059A, 14CX05038A）
Technology Project of Qingdao (14-2-4-108-jch) （14-2-4-108-jch）
Funda-mental Research Funds for the Central Universities (R1510059A, 14CX05038A) （R1510059A, 14CX05038A）
