Preparation of ZnO Nanoparticles and Photocatalytic H2 Production Activity from Different Sacrificial Reagent Solutions  

纳米ZnO的制备及其在不同牺牲试剂下的光催化产氢性能

作　　者：彭天右[1] 吕红金[1] 曾鹏[1] 张晓虎[1] 

机构地区：[1]武汉大学化学与分子科学学院,武汉430072

出　　处：《Chinese Journal of Chemical Physics》2011年第4期464-470,I0004,共8页化学物理学报（英文）

基　　金：This work was supported by the National Natural Science Foundation of China （No.20973128 and No.20871096）, the National High Tech Research and Development Program （No.2006AA03Z344）, and the Program for New Century Excellent Talents in University of China （No.NCET-07-0637）.

摘　　要：ZnO nanoparticles were synthesized via a direct precipitation method followed by a hetero- geneous azeotropic distillation and calcination processes, and then characterized by X-ray power diffraction, scanning electron microscopy, transmission electron microscopy, and ni- trogen adsorption-desorption measurement. The effects of Pt-loading amount, calcination temperature, and sacrificial reagents on the present ZnO suspension were investigated, photocatalytic H2 evolution efficiency from the The experimental results indicate that ZnO rianoparticles calcined at 400℃ exhibit the best photoactivity for the H2 production in comparison with the samples calcined at 300 and 500℃, and the photoeatalytie H2 production efficiency from a methanol solution is much higher than that from a triethanolamine solution. It can be ascribed to the oxidization of methanol also contributes to the H2 production during the photochemical reaction process. Moreover, the photocatalytic mechanism for the H2 production from the present ZnO suspension system containing methanol solution is also discussed in detail.

关 键 词：Photocatalytic hydrogen production ZnO Photocatalytic activity Sacrificial reagent 

分 类 号：O[理学]