CoCuO_(x)/碳气凝胶的制备及光催化性能研究  

Preparation and Photocatalytic Properties of CoCuO_(x)/Carbon Aerogel

作　　者：梁慧 朱钰晓 刘同金[1] 李如美[1] 李瑞娟[1] 房锋[1] Liang Hui;Zhu Yuxiao;Liu Tongjin;Li Rumei;Li Ruijuan;Fang Feng(Institute of Plant Protection,Shandong Academy of Agricultural Sciences,Jinan 250100,China)

机构地区：[1]山东省农业科学院植物保护研究所,山东济南250100

出　　处：《山东化工》2024年第1期15-19,共5页Shandong Chemical Industry

基　　金：山东省农业科学院农业科技创新工程项目(CXGC2023F04,CXGC2023D01)。

摘　　要：水体中难降解有机污染物严重威胁人类健康,光催化法因其对有机污染物降解彻底而成为研究热点。采用一步法成功制备CoCuO_(x)/碳气凝胶(CoCuO_(x)/CA),通过X射线衍射(XRD)、扫描电子显微镜(SEM)、热重分析(TGA/DTG)等手段对光催化剂的结构、形貌进行了表征分析,并研究了其光催化性能。考察了不同反应体系、降解时间、循环使用次数等因素对CoCuO_(x)/碳气凝胶催化性能的影响。结果表明,在模拟太阳光下,CoCuO_(x)/碳气凝胶能够快速活化H_(2)O_(2),120 min内对有机污染物亚甲基蓝、刚果红和苯酚的降解效率分别为95.8%,95.13%,83.85%;3次循环使用后,CoCuO_(x)/碳气凝胶的稳定性良好,对亚甲基蓝的去除率仍超过95%。自由基猝灭实验证明?OH是反应体系中的主要活性物种。Refractory organic pollutants in water would pose a potential threat to human health.Photocatalysis has attracted public attention due to its outstanding capacity for organic pollutants degradation.CoCuO_(x)/carbon aerogel(CoCuO_(x)/CA)was successfully prepared by one-step method,and the structure and morphology of the photocatalyst were characterized by XRD,SEM,and TGA/DTG.The effects of different reaction systems,degradation time and recycling times on the catalytic performance of CoCuO_(x)/CA were investigated,and the results were observed that CoCuO_(x)/CA shows high performance in H_(2)O_(2)activation for decontamination in water under simulated sunlight.Within 120 min,the degradation efficiency of methylene blue(MB),congo red(CR),phenol was 95.8%,95.13%and 83.85%,respectively.Moreover,the recycling experiment and XRD suggested the stability of CoCuO_(x)/CA,and the removal rate of MB was still more than 95%after three times of recycling.Radical quenching experiment confirmed the existence of·OH in the reaction system,which played the most significant role in decomposing organic pollutants.

关 键 词：光催化 碳气凝胶 有机污染物 催化机理 

分 类 号：O643.3[理学—物理化学]