介质阻挡放电诱发185 nm紫外光结合Bi2WO6/NMO催化降解CS2  

Catalytic degradation of CS2 via dielectric barrier discharge plasma induced 185 nm UV light photolysis combined with Bi2WO6 coated natural manganese ore catalyst

作　　者：肖俊 陈荣 雷宇[1] 俞志敏[2] 朱承驻[1] XIAO Jun;CHEN Rong;LEI Yu;YU Zhimin;ZHU Chengzhu(School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China;School of Biotechnology & Food Science and Environmental Engineering, Hefei University, Hefei 230601, China)

机构地区：[1]合肥工业大学资源与环境工程学院,安徽合肥230009 [2]合肥学院生物食品与环境学院,安徽合肥230601

出　　处：《合肥工业大学学报（自然科学版）》2019年第10期1404-1410,共7页Journal of Hefei University of Technology：Natural Science

基　　金：安徽省教育厅高等学校自然科学重大研究资助项目(KJ2017ZD46)

摘　　要：文章采用水热法制备了Bi2WO6/天然锰矿(natural manganese ore,NMO)复合催化剂,并采用X射线衍射仪(X-ray diffraction,XRD)、扫描电子显微镜(scanning electron microscope,SEM)、BET、X射线光电子能谱分析(X-ray photoelectron spectroscopy,XPS)对样品进行了表征。以自制介质阻挡放电诱发紫外光(combination of dielectric barrier discharge plasma with UV light photolysis,CDBDP)联合Bi2WO6/NMO考察了催化剂对CS2的催化降解活性。结果表明:当Bi2WO6与NMO质量比为0.2∶1、前驱体溶液pH=3,煅烧温度为400 ℃时,制备的复合催化剂活性最佳;在输入功率80W、停留时间0.5 s时,初始质量浓度为 150 mg/m^3 的CS2气体去除率及矿化率分别可达93.1%、75.2%;Bi2WO6与NMO之间的相互作用提高了对CS 2的催化降解活性及矿化。The Bi2WO6 coated natural manganese ore composite catalysts(Bi2WO6/NMO) were synthesized by hydrothermal method and characterized by X-ray diffraction(XRD), scanning electron microscope(SEM), X-ray photoelectron spectroscopy(XPS) and N2 adsorption-desorption measurement(BET). The catalytic activity of Bi2WO6/NMO for CS2 degradation was measured by the combination of dielectric barrier discharge plasma with UV light photolysis(CDBDP) technology and Bi2WO6/NMO. The results showed that the composite Bi2WO6/NMO had the highest catalytic activity when the mass ratio of Bi 2WO 6/NMO was 0.2∶1, the precursor solution pH was 3 and the calcination temperature was 400 ℃. When the initial concentration of CS2 was 150 mg/m^3, the gas residence time was 0.5 s and the input power was 80 W, the CS2 removal efficiency and mineralization efficiency reached 93.1% and 75.2%, respectively. The interaction between NMO and Bi2WO6 in the catalyst enhanced the CS2 catalytic degradation activity and mineralization.

关 键 词：介质阻挡放电 CS2 Bi2WO6 天然锰矿 催化降解 

分 类 号：X511[环境科学与工程—环境工程]