中文摘要：

采用液相浸渍沉淀法制备AgI-BiOI/ZSM-5异质结催化剂,通过X-射线衍射（XRD）、紫外-可见光漫反射光谱（DRS）、扫描电镜（SEM）和交流阻抗（EIS）等表征技术对样品进行表征分析,研究AgI-BiOI/ZSM-5催化剂在可见光条件（λ〉420 nm）下催化氧化NO的可行性及异质结催化剂的稳定性。研究结果表明,所制备的AgI-BiOI/ZSM-5催化剂在可见光下催化氧化NO的效率达到90%,表现出良好的催化活性,而且AgI-BiOI/ZSM-5在反复使用5次后其催化活性基本保持不变。EIS测试结果表明,AgI-BiOI/ZSM-5异质结的形成有利于光生电子和空穴的分离,从而提高了AgI-BiOI/ZSM-5的催化活性和稳定性。

英文摘要：

AgI-BiOI/ZSM-5 heterojunction photocatalyst was synthesized by impregnation-precipitation method,and characterized by X-ray diffraction（XRD）,UV-Vis diffuse reflectance spectra（DRS）,scanning electron microscopy（SEM） and electrochemical impedance spectroscopy（EIS） measurement.The feasibility and stability of AgI-BiOI/ZSM-5 for the photocatalytic reduction of NO were investigated under visible light（λ420 nm）.The results showed that the efficiency for the photocatalytic reduction of NO using AgI-BiOI/ZSM-5 can be achieved 90% under visible light.In addition,it was found that AgI-BiOI/ZSM-5 heterojunction photocatalyst was stable after 5 repeated uses under visible light,and the photocatalytic efficiency of AgI-BiOI/ZSM-5 after 5 repeated uses almost remained the same.The EIS results showed that the heterojunction structure of AgI-BiOI/ZSM-5 was beneficial to separate the photogenerated elections and holes,thus leading to the enhanced photocatalytic activity of AgI-BiOI/ZSM-5.