ZnIn_(2)S_(4)/TiO_(2)/Ag复合光催化剂的制备及分解水制氢性能  

ZnIn_(2)S_(4)/TiO_(2)/Ag Composite Photocatalyst:Preparation and Performance for Hydrogen Production from Water Splitting

作　　者：王兰 史航 张欢 陈绮欣 金宝丹 张宏忠 WANG Lan;SHI Hang;ZHANG Huan;CHEN Qi‑Xin;JIN Bao‑Dan;ZHANG Hong‑Zhong(Henan Collaborative Innovation Centre of Environmental Pollution Control and Ecological Restoration,College of Material and Chemical Engineering,Zhengzhou University of Light Industry,Zhengzhou 450001,China)

机构地区：[1]郑州轻工业大学材料与化学工程学院,环境污染治理与生态修复河南省协同创新中心,郑州450001

出　　处：《无机化学学报》2021年第9期1571-1578,共8页Chinese Journal of Inorganic Chemistry

基　　金：郑州轻工业大学博士基金(No.13501050076);河南省重点研发与推广专项(No.192102310243,202102310282);河南省创新型科技团队项目(No.CXTD2015023)资助。

摘　　要：首先采用溶剂热法将1D TiO_(2)纳米带均匀地穿插到片层结构组装而成的3D ZnIn_(2)S_(4)微球中,所形成的异质结构能有效抑制光生电子-空穴对。其次利用光沉积法将0D Ag纳米粒子负载在3D ZnIn_(2)S_(4)/1D TiO_(2)异质结构上。得益于0D Ag纳米粒子的等离子体效应及电子助催化剂作用,三元3D ZnIn_(2)S_(4)/1D TiO_(2)/0D Ag复合光催化剂在分解水制氢方面表现出优异的性能。在模拟太阳光照射下,ZnIn_(2)S_(4)/TiO_(2)/Ag复合光催化剂的产氢速率达到715μmol·g^(-1)·h^(-1),相对于ZnIn_(2)S_(4)/TiO_(2)、ZnIn_(2)S_(4)/P25、ZnIn_(2)S_(4)、TiO_(2)和P25分别提高了2.7倍、3.3倍、3.8倍、184倍和518倍。同时借助于X射线衍射、扫描电子和透射电子显微镜、X射线光电子能谱和紫外可见漫反射光谱等表征手段进一步论证了复合催化剂的优异性能。Firstly,1D TiO_(2) nanobelts were uniformly interspersed into 3D ZnIn_(2)S_(4) microspheres assembled by lamel-lar structure by solvothermal method.The heterostructure photocatalyst can effectively suppress the re-combination of photoinduced electron-hole pairs.Secondly,0D Ag nanoparticles were loaded onto 3D ZnIn_(2)S_(4)/1D TiO_(2) hetero-structure by photodeposition method.Owing to the plasma effect of 0D Ag nanoparticles and the action of electron co-catalyst,ternary 3D ZnIn_(2)S_(4)/1D TiO_(2)/0D Ag composite photocatalyst showed excellent performance in photocatalyt-ic hydrogen evolution.Under simulated sunlight irradiation,the hydrogen production rate of ZnIn_(2)S_(4)/TiO_(2)/Ag com-posite photocatalyst reached 715μmol·g^(-1)·h^(-1),which was 2.7 times,3.3 times,3.8 times,184 times and 518 times higher than those of ZnIn_(2)S_(4)/TiO_(2),ZnIn_(2)S_(4)/P25,TiO_(2) and P25,respectively.At the same time,by means of X-ray dif-fraction,scanning electron microscopy,transmission electron microscopy,X-ray photoelectron spectroscopy and UV-Vis diffuse reflection spectroscopy,the excellent performance of the composite catalyst was further demonstrated.

关 键 词：ZnIn_(2)S_(4)/TiO_(2)/Ag 电子助催化剂 异质结构 光催化制氢 

分 类 号：O643.36[理学—物理化学] O644.1[理学—化学]