Mg^(2+)掺杂Zn_(0.5)Cd_(0.5)S固溶体光催化剂的制备及光解水制氢  

Preparation of Mg^(2+) Doping Cd_(0.5)Zn_(0.5)S Solid Solution and Its Properties of Splitting Water into Hydrogen

作　　者：程彩虹[1] 彭绍琴[1] 李越湘[1] 

机构地区：[1]南昌大学化学系,南昌330031

出　　处：《有色金属（冶炼部分）》2012年第8期51-53,共3页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家自然科学基金资助项目(21163012);国家重点基础研究发展规划项目(2009CB220003);江西省自然科学基金资助项目(2010JZH0096)

摘　　要：采用水热法制备了Cd0.5Zn0.5S和掺杂0.4%(摩尔百分数)Mg2+的0.4%Mg/Cd0.5Zn0.5S固溶体光催化剂。采用UV-Vis、XRD以及电化学等手段对催化剂进行表征,并考查催化剂可见光下分解水制氢的活性。结果表明:Mg2+掺杂提高了Cd0.5Zn0.5S固溶体中光生电子和空穴的分离效率,大大提高了Cd0.5Zn0.5S固溶体光催化制氢的活性。Cd0. 5Zn0. 5S and Mg^2＋ doped （0.4%, mole percent） 0.4%Mg/Cd0.5Zn0.5S solid solution photo-catalysts were prepared hydrothermally and characterized by XRD, UV-Vis absorption spectroscope and e-lectrochemistry. Their photo activities were evaluated by production of hydrogen from water under visible light （λ≥420 nm） irradiation. The results show that Mg^2＋ doping improves the separation efficiency of photo-generated electrons and holes in Cd0. 5 Zn0. 5 S solid solution, and the visible light photo-catalytic activ- ity of 0.4%Mg/Cd0. 5Zn0. 5S solid solution was markedly enhanced.

关 键 词：光催化 制氢 Mg2+掺杂 Cd0.5Zn0.5S固溶体 可见光 

分 类 号：O643[理学—物理化学]