AgI/BiOI异质结光电催化甲醇氧化  

AgI/BiOI Heterojunction Photoelectrocatalytic Methanol Oxidation

作　　者：黄鹏伟 李静[1] 林博 王宜民[1] 陈仪 谢楠耿 Huang Pengwei;Li Jing;Lin Bo;Wang Yimin;Chen Yi;Xie Nangeng(Department of Chemical Engineering,Jieyang Vocational and Technical College,Jieyang Guangdong 522000,China)

机构地区：[1]揭阳职业技术学院化学工程系,广东揭阳522000

出　　处：《山西化工》2024年第7期4-6,10,共4页Shanxi Chemical Industry

基　　金：广东省省级青年创新人才项目(2023KQNCX281)。

摘　　要：为提高BiOI光电催化甲醇氧化的效率,本研究采用简单的离子交换法制备了AgI/BiOI复合光催化剂。AgI的负载提高了甲醇氧化的效率,其中光还原时间为10 min时,AgI/BiOI样品光电催化活性最高,甲醛的产率和法拉第效率分别达到0.952μg·mL^(-1)·h^(-1)和53%。结果表明,AgI/BiOI复合材料光催化性能增强主要归因于异质结的构建,进而提高了光生载流子的分离效率。活性物种捕获实验揭示了甲醇氧化过程中的可能机理。In order to improve the efficiency of BiOI photoelectrocatalytic methanol oxidation,AgI/BiOI composite photocatalysts were prepared in this study using a simple ion-exchange method.The loading of AgI improved the efficiency of methanol oxidation,in which the highest photoelectrocatalytic activity of AgI/BiOI samples was observed at a photoreduction time of 10 min,and the formaldehyde yields and Faraday efficiencies reached 0.952μg·mL^(-1)·h^(-1) and 53%,respectively.The results indicate that the enhanced photocatalytic performance of the AgI/BiOI composites is mainly attributed to the construction of heterojunctions,which in turn improves the separation efficiency of the photogenerated carriers.The active species trapping experiments revealed a possible mechanism in the methanol oxidation process.

关 键 词：光电催化 甲醇氧化 BiOI 异质结 

分 类 号：O643[理学—物理化学]