中空微球结构Ag/TiO_(2)的制备及其光催化性能研究  

Preparation and photocatalytic performance of hollow microspheres Ag/TiO_(2)

作　　者：孙墨杰[1] 景学杰 王小利 张士元 韦慧珍 张庭[1] SUN Mo-jie;JING Xue-jie;WANG Xiao-li;ZHANG Shi-yuan;WEI Hui-zhen;ZHANG Ting(School of Chemical Engineering,Northeast Electric Power University,Jilin 132012,China;China National Petroleum Corporation Jilin Petrochemical Company Power Plant 2,Jilin 132021,China)

机构地区：[1]东北电力大学化学工程学院,吉林吉林132012 [2]中国石油天然气集团有限公司吉林石化公司动力二厂,吉林吉林132021

出　　处：《应用化工》2023年第1期117-121,共5页Applied Chemical Industry

基　　金：吉林省科技厅重点研发项目(20210201058GX)。

摘　　要：以碳微球为模板剂,硝酸银为银源,采用水热法和光化学沉淀法,制备Ag/TiO_(2)中空微球材料。利用XRD、XPS、SEM、TEM、UV-Vis对样品的组成、结构、形貌、光学性能参数等进行分析,通过在氙灯直接照射作用下,降解产物罗丹明B来分析评价制备材料的光催化反应活性。结果表明,制备的样品中的TiO_(2)均为锐钛矿型,且为许多小颗粒组成的中空微球结构,Ag以单质形式存在,并且Ag的加入使材料的吸收光谱向红外方向移动。Ag/TiO_(2)中空微球对降解罗丹明B降解率高于纯TiO_(2)。Ag的复合量为3%时,对罗丹明B的降解率为TiO_(2)中空微球的1.2倍。Ag/TiO_(2)Hollow microspheres were prepared by hydrothermal method and photochemical precipitation method using carbon microspheres as template and silver nitrate as silver source.XRD,XPS,SEM,TEM,UV-Vis methods were used to directly analyze the composition, structure, morphology and optical properties of the samples.The photocatalytic activity of the prepared materials was evaluated by analyzing the degradation product Rhodamine B under the direct irradiation of xenon lamp.The results show that the TiO_(2)in the prepared samples are all anatase and hollow microspheres composed of many small particles.Ag exists in elemental form, and the addition of Ag makes the absorption spectrum of TiO_(2)move to the infrared direction.The degradation rate of Rhodamine B by Ag/TiO_(2)hollow microspheres was higher than that of pure TiO_(2).When the compound amount of Ag was 3%,the degradation rate of Rhodamine B was 1.2 times that of TiO_(2)hollow microspheres.

关 键 词：水热法 中空微球 光催化 罗丹明B 

分 类 号：TQ139.2[化学工程—无机化工] O643[理学—物理化学]