Z型可见光催化剂Au NPs/g-C3N4/BiOBr的构建及其光催化性能（英文）  

Facile constructing plasmonic Z-scheme Au NPs/g-C3N4/BiOBr for enhanced visible light photocatalytic activity

作　　者：王亮[1] 张红光 郭春雨 冯丽娟[1] 李春虎[1] 王文泰[1] WANG Liang;ZHANG Hong-guang;GUO Chun-yu;FENG Li-juan;LI Chun-hu;WANG Wen-tai(College of Chemistry and Chemical Engineering,Ocean University of China,Qingdao 266100,China)

机构地区：[1]中国海洋大学化学化工学院海洋化学理论与技术教育部重点实验室

出　　处：《燃料化学学报》2019年第7期834-842,I0004,共10页Journal of Fuel Chemistry and Technology

基　　金：supported by the National Natural Science Foundation of China(51602297);Fundamental Research Funds for the Central Universities(201612007);Postdoctoral Innovation Program of Shandong Province(201603043);the Major Research Project of Shandong Province(2016ZDJS11A04)

摘　　要：通过水热和原位还原法制备了一种新型Z型异质结三元复合材料Au NPs/g-C3N4/BiOBr,并通过X射线衍射、X射线光电子能谱、透射电子显微镜、紫外-可见漫反射光谱和光致发光发射光谱等技术对材料的形貌、结构进行了表征。通过在可见光下降解苯酚来评价光催化剂的活性。研究发现,Au NPs/g-C3N4/BiOBr显示出增强的光催化活性,对苯酚的降解能力是g-C3N4的3倍,是BiOBr的2.5倍。这可归因于三元复合材料的窄带隙(2.10eV)、Z型机理对光生电子-空穴对的有效分离和Au纳米颗粒的表面等离子体共振效应(SPR)。A novel ternary Au NPs/g-C3N4/BiOBr Z-scheme heterojunction composite was fabricated through hydrothermal and in-situ reduction method, and characterized by X-ray diffraction, X-ray photoelectron spectroscopy, transmission electron microscopy, ultraviolet-visible diffuse reflection spectroscopy and photoluminescence emission spectroscopy. The photocatalytic activity was evaluated by the degradation of phenol under visible-light irradiation. It was found that Au NPs/g-C3N4/BiOBr showed enhanced photocatalytic activity, which is 3-fold higher than g-C3N4 and 2.5-fold higher than BiOBr. This could be attributed to the effective separation of photogenerated electron-hole pairs, narrowed band gap (2.10 eV) and surface plasmon resonance (SPR).

关 键 词：AU NPs/g-C3N4/BiOBr Z型催化剂 可见光 苯酚 等离子体 

分 类 号：X703[环境科学与工程—环境工程]