可见光光催化/抗菌功能Ag/CuO/TiO_(2)/天然沸石复合材料的制备及性能  

Preparation and Properties of Ag/CuO/TiO_(2)/Natural Zeolite Based Composites with Visible Light Photocatalytic/Antibacterial Properties

作　　者：于倩茹 王李鹏 都扶岭 梁鑫超 刘思琪 王程[1,2] YU Qianru;WANG Lipeng;DU Fuling;LIANG Xinchao;LIU Siqi;WANG Cheng(School of Material Science and Engineering,Shaanxi University of Science and Technology,Xi’an 710021,China;Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials,Xi’an 710021,China)

机构地区：[1]陕西科技大学材料科学与工程学院,西安710021 [2]陕西省无机材料绿色制备与功能化重点实验室,西安710021

出　　处：《硅酸盐通报》2024年第12期4639-4648,共10页Bulletin of the Chinese Ceramic Society

基　　金：陕西省重点研发计划项目(2022GY-163);陕西省教育厅服务地方专项项目(22JC020);咸阳市重点研发计划项目(S2021ZDYF-GY-0189)。

摘　　要：采用浸渍-煅烧法在酸处理沸石表面固载CuO/TiO_(2)颗粒,再采用离子交换/光还原法在CuO/TiO_(2)/天然沸石表面固载Ag纳米颗粒,制备得到Ag/CuO/TiO_(2)/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/TiO_(2)/天然沸石复合材料的比表面积达146 m^(2)·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%。The Ag/CuO/TiO_(2)/natural zeolite composites were prepared by impregnation-calcination method to immobilize CuO/TiO_(2)particles on the surface of natural zeolite after acid treatment,and then Ag nanoparticles were immobilized on the surface of CuO/TiO_(2)/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,N_(2)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/TiO_(2)/natural zeolite composites is 146 m^(2)·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.

关 键 词：Ag/CuO/TiO_(2)/天然沸石 环保涂料 吸附 可见光光催化 抗菌 酸处理 

分 类 号：O644.1[理学—物理化学] O643.36[理学—化学] X703[环境科学与工程—环境工程]