g-C_(3)N_(4)/Ag_(2)O复合光催化剂的制备及其近红外光催化性能  

Preparation and near-infrared photocatalytic performance of g-C_(3)N_(4)/Ag_(2)O composite photocatalyst

作　　者：龚洁[1,2] 赵凤怡 邹曦 陈润泽[1,2] 陈琪 任大军 张惠灵[1,2] Gong Jie;Zhao Fengyi;Zou Xi;Chen Runze;Chen Qi;Ren Dajun;Zhang Huiling(College of Resources and Environmental Engineering,Wuhan University of Science and Technology,Wuhan 430081,China;Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources,Wuhan University of Science and Technology,Wuhan 430081,China;Key Laboratory of Ecological Impacts of Hydraulic-Projects and Restoration of Aquatic Ecosystem of Ministry of Water Resources,Institute of Hydroecology,Ministry of Water Resources and Chinese Academy of Sciences,Wuhan 430079,China)

机构地区：[1]武汉科技大学资源与环境工程学院,湖北武汉430081 [2]武汉科技大学冶金矿产资源高效利用与造块湖北省重点实验室,湖北武汉430081 [3]水利部中国科学院水工程生态研究所水利部水工程生态效应与生态修复重点实验室,湖北武汉430079

出　　处：《武汉科技大学学报》2021年第2期100-106,共7页Journal of Wuhan University of Science and Technology

基　　金：国家自然科学基金资助项目(51779157);武汉市科技计划资助项目(2020020601012274);湖北省大学生创新创业训练计划项目(S202010488010).

摘　　要：通过简易化学合成法制备了g-C_(3)N_(4)/Ag_(2)O_(p-n)异质结复合光催化剂,利用XRD、XPS、SEM、TEM、DRS等对所制复合材料的物相结构、微观形貌及光学性质进行表征,借助近红外光下催化降解罗丹明B(RhB)试验评价其光催化活性,重点探讨了g-C_(3)N_(4)/Ag_(2)O_(p-n)异质结复合材料的光催化降解机理。结果表明,当g-C_(3)N_(4)、Ag_(2)O质量比为1∶16时,所制g-C_(3)N_(4)/Ag_(2)O复合光催化剂具有最佳的近红外光催化性能且活性稳定;h+和·O-2活性自由基在近红外光催化降解过程中发挥了主要作用。The g-C_(3)N_(4)/Ag_(2)O_(p-n) heterojunction composite photocatalysts were prepared via a simple chemical synthesis method.The phase structure,morphology and optical property of as-prepared composites were characterized by XRD,XPS,SEM,TEM and DRS.The photocatalytic activity of the samples were evaluated by photocatalytic degradation of rhodamine B under near-infrared light,and the photocatalytic degradation mechanism of g-C_(3)N_(4)/Ag_(2)O_(p-n) heterostructure composites was mainly discussed.The results show that when the mass ratio of g-C_(3)N_(4) to Ag_(2)O is 1∶16,the prepared g-C_(3)N_(4)/Ag_(2)O composite photocatalyst has the optimum near-infrared photocatalytic performance and stable activity.The h+and·O-2 active radicals play a primary role in the NIR photocatalytic degradation.

关 键 词：g-C_(3)N_(4) Ag_(2)O 复合光催化剂 p-n异质结 罗丹明B降解 近红外光催化性能 

分 类 号：TB34[一般工业技术—材料科学与工程] O643.36[理学—物理化学]