Ag_(2)O-NiTi-LDH复合材料的构建及其光催化氧化乙硫醇性能研究  

Construction of Ag_(2)O-NiTi-LDH Composite and Its Photocatalytic Oxidation of Ethyl Mercaptan

作　　者：崔洪珊[1,2] 何杰 徐从波 赵玲玲[3] 王丽平 CUI Hongshan;HE Jie;XU Congbo;ZHAO Linging;WANG Liping(School of Pharmacy and Materials,Huainan Union University,Huainan 232038,China;School of Earth Environment,Anhui University of Science and Technology,Huainan 232001,China;School of Chemical Engineering,Anhui University of Science and Technology,Huainan 232001,China)

机构地区：[1]淮南联合大学制药与材料学院,安徽淮南232038 [2]安徽理工大学地球与环境学院,安徽淮南232001 [3]安徽理工大学化学工程学院,安徽淮南232001

出　　处：《安徽建筑大学学报》2024年第1期36-42,共7页Journal of Anhui Jianzhu University

基　　金：安徽高校自然科学研究项目(KJ2017A587、KJ2021A1305)。

摘　　要：本文将氧化银(Ag_(2)O)负载到镍-钛层状双金属氢氧化物(NiTi-LDH)上以构建Ag_(2)O-NiTi-LDH复合材料。通过XRD、SEM、TEM、XPS、UV-vis、电化学工作站和FT-IR等技术对样品进行表征。采用静态吸附-光催化的方法对乙硫醇进行吸附氧化降解。结果表明:复合材料中Ag_(2)O和NiTi-LDH之间存在相互作用,使得Ag_(2)O-NiTi-LDH复合材料比单一基体材料的带隙能小,光生电子-空穴的分离和迁移效率高;在光催化实验中,单一的基体材料NiTi-LDH对乙硫醇的光催化效果不明显,Ag_(2)O和Ag_(2)O-NiTi-LDH虽然都能将乙硫醇光催化氧化成硫酸盐,但Ag_(2)O-NiTi-LDH复合材料光催化氧化降解效率高于Ag_(2)O。In this paper,Ag_(2)O-NiTi-LDH composites were prepared by loading silver oxide(Ag_(2)O)onto Ni-Ti layered double hydroxide(NiTi-LDH).The samples were characterized by a means of XRD,SEM,TEM,XPS,UV-vis,electrochemical workstation and FT-IR technologies.The adsorption and photocatalytic performance of samples on ethyl mercaptan were evaluated by static adsorption-photocatalytic method.The results show that there is an interaction between Ag_(2)O and NiTi-LDH,which makes the band gap energy of Ag_(2)O-NiTi-LDH composite lower than that of its precursors,and the efficiency of separation and migration of photo-generated electron-hole is higher.In the photocatalytic experiment,a single precursor NiTi-LDH has no obvious photocatalytic effect on ethyl mercaptan.Both Ag_(2)O and Ag_(2)O-NiTi-LDH can photocatalytic oxidize ethyl mercaptan to sulfates,however,the photocatalytic degradation efficiency of the composite Ag2O-NiTi-LDH has a much higher than that of Ag_(2)O.

关 键 词：氧化银 镍钛-层状双金属氢氧化物 复合材料 光催化 乙硫醇 

分 类 号：O614[理学—无机化学]