首页|CoCuOx/碳气凝胶的制备及光催化性能研究

CoCuOx/碳气凝胶的制备及光催化性能研究

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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CoCuOx/碳气凝胶(CoCuOx/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CoCuOx/碳气凝胶催化性能的影响。结果表明,在模拟太阳光下,CoCuOx/碳气凝胶能够快速活化H2 O2,120 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,CoCuOx/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。
Preparation and Photocatalytic Properties of CoCuOx/Carbon Aerogel
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.CoCuOx/carbon aerogel(CoCuOx/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 CoCuOx/CA were investigated,and the results were observed that CoCuOx/CA shows high performance in H2 O2 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 CoCuOx/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.

photocatalysiscarbon aerogelorganic pollutantscatalytic mechanism

梁慧、朱钰晓、刘同金、李如美、李瑞娟、房锋

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山东省农业科学院 植物保护研究所,山东 济南 250100

光催化 碳气凝胶 有机污染物 催化机理

山东省农业科学院农业科技创新工程项目山东省农业科学院农业科技创新工程项目

CXGC2023F04CXGC2023D01

2024

山东化工
山东省化工研究院 山东省化工信息中心

山东化工

影响因子:0.249
ISSN:1008-021X
年,卷(期):2024.53(1)
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