氧化铜掺杂石墨相氮化碳增强光催化降解四环素废水性能研究  

Enhanced Photocatalytic Degradation of Tetracycline Wastewater by Copper Oxide Doped Graphite Carbon Nitride

作　　者：李玥怡 李学松 申学鹏 李永勤 王旭明 吴之强 Li Yueyi;Li Xuesong;Shen Xuepeng;Li Yongqin;Wang Xuming;Wu Zhiqiang(School of Chemistry and Chemical Engineering,Ningxia Normal University,Ningxia,756000;School of Physics and Electronic-Electrical Engineering,Ningxia University,Ningxia,750021;School of Civil and Hydraulic Engineering,Ningxia University,Ningxia,750021)

机构地区：[1]宁夏师范学院化学化工学院,宁夏756000 [2]宁夏大学物理与电子电器工程学院,宁夏750021 [3]宁夏大学土木与水利工程学院,宁夏750021

出　　处：《当代化工研究》2023年第16期70-73,共4页Modern Chemical Research

基　　金：区级重点研发“粉体碳化硅基多孔氮化碳复合材料的构筑及光催化降解有机废水作用机制研究”(项目编号:2021BEB04003);区级自然基金“无溶剂机械化学法构筑不同Lewis酸-表面活性剂复合催化剂及其绿色有机催化应用”(项目编号:2022AAC03295);区级重点研发“非贵金属负载药材渣衍生的杂原子掺杂多孔生物质炭复合材料设计与催化有机偶联反应机制研究”(项目编号:2022BDE03013)。

摘　　要：以P123为模板剂,醋酸铜为掺杂剂,采用热缩聚方法制备了氧化铜掺杂介孔石墨相氮化碳复合材料(CuO-g-C_(3)N_(4))。利用X-粉末衍射(XRD)、傅里叶变换红外(FT-IR)、氮气吸附-脱附(BET)、紫外-可见漫反射(UV-Vis-DRS)和光致发光光谱(PL)等表征对样品进行分析。结果表明,不同氧化铜掺杂比例对复合材料的性能产生较大的影响。随着氧化铜掺杂比例的提升,其复合材料的带隙值下降,比表面积和孔径均有一定程度的增加,光催化活性提升。其中以样品CuO5.0-g-C_(3)N_(4)催化性能最佳,在90min内对浓度为20mg/L的四环素废水降解效率可达到65.1%,且在重复循环使用5次后,光催化降解效率仍保持在60.3%以上。In this paper,copper oxide doped mesoporous graphite carbon nitride composites(CuO-g-C_(3)N_(4))were prepared by thermal poly-condensation,using P123 as template and copper acetate as dopant.The samples were analyzed by XRD,FT-IR,BET,UV-vis-DRS and PL.The results show that different doping ratio of copper oxide has great influence on the properties of the composite.With the increase of doping ratio,the material band gap value decreases.The specific surface area and pore size are increased to a certain extent,and the photocatalytic activity increases.Among them,the sample CuO5.0-g-C_(3)N_(4) has the best performance.The degradation efficiency of tetracycline wastewater(20 mg/L)reaches 65.1%in 90 min-utes,and the photocatalytic degradation efficiency still remains above 60.3%after repeated use for five times.

关 键 词：模板法 介孔氮化碳 光催化降解 四环素废水 

分 类 号：X703[环境科学与工程—环境工程]