可见光光催化/抗菌功能Ag/CuO/TiO2/天然沸石复合材料的制备及性能

摘要/Abstract

摘要： 采用浸渍-煅烧法在酸处理沸石表面固载CuO/TiO₂颗粒,再采用离子交换/光还原法在CuO/TiO₂/天然沸石表面固载Ag纳米颗粒,制备得到Ag/CuO/TiO₂/天然沸石复合材料;进一步将该复合材料与白水泥和乳胶粉混合得到沸石基环保涂料。采用XRD、FT-IR、SEM-EDX、N₂吸附-脱附、UV-Vis DRS、PL等测试对材料的组成和结构进行表征,采用甲基橙和大肠杆菌分别评价材料的光催化和抗菌性能。结果表明,制备的Ag/CuO/TiO₂/天然沸石复合材料的比表面积达146 m²·g^-1,光响应范围可拓展至506 nm,具有较低的电子-空穴对复合概率。材料在氙灯照射240 min后,对甲基橙的去除率可达93.2%,在光照5 min后的抗菌率近100%。

关键词: Ag/CuO/TiO₂/天然沸石, 环保涂料, 吸附, 可见光光催化, 抗菌, 酸处理

Abstract: The Ag/CuO/TiO₂/natural zeolite composites were prepared by impregnation-calcination method to immobilize CuO/TiO₂ particles on the surface of natural zeolite after acid treatment, and then Ag nanoparticles were immobilized on the surface of CuO/TiO₂/natural zeolite by ion exchange/photoreduction method. The composites were further mixed with white cement and latex powder to obtain a zeolite based environmental protection coating. The composition and structure of materials were characterized by XRD, FT-IR, SEM-EDX, N₂ adsorption-desorption, UV-Vis DRS, PL and other tests. The photocatalytic and antibacterial properties of materials were evaluated by methyl orange and escherichia coli, respectively. The results show that the specific surface area of prepared Ag/CuO/TiO₂/natural zeolite composites is 146 m²·g^-1, and the light response range can be extended to 506 nm, which has a low electron-hole pair recombination probability. After 240 min of xenon lamp irradiation, the removal rate of methyl orange is 93.2%, and the antibacterial rate is nearly 100% after 5 min of irradiation.

Key words: Ag/CuO/TiO₂/natural zeolite, environmental protection coating, adsorption, visible light photocatalysis, antibacterial, acid treatment

中图分类号:

于倩茹, 王李鹏, 都扶岭, 梁鑫超, 刘思琪, 王程. 可见光光催化/抗菌功能Ag/CuO/TiO₂/天然沸石复合材料的制备及性能[J]. 硅酸盐通报, 2024, 43(12): 4639-4648.

YU Qianru, WANG Lipeng, DU Fuling, LIANG Xinchao, LIU Siqi, WANG Cheng. Preparation and Properties of Ag/CuO/TiO₂/Natural Zeolite Based Composites with Visible Light Photocatalytic/Antibacterial Properties[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2024, 43(12): 4639-4648.

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可见光光催化/抗菌功能Ag/CuO/TiO₂/天然沸石复合材料的制备及性能

Preparation and Properties of Ag/CuO/TiO₂/Natural Zeolite Based Composites with Visible Light Photocatalytic/Antibacterial Properties

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