SnO_2、Ag/SnO_2微球的制备及其光催化性能研究  

Studies Preparation and photocatalytic performance of SnO_2、Ag/SnO_2Micospheres

作　　者：张丽惠[1] 孙开莲[1] 韦致远 ZHANG Li-hui;SUN Kai-lian;WEI Zhi-yuan(School of Material and Chemical Engineering,Chuzhou University,Chuzhou239000,China)

机构地区：[1]滁州学院材料与化学工程学院,安徽滁州239000

出　　处：《化学研究与应用》2019年第4期672-676,共5页Chemical Research and Application

基　　金：安徽省高校优秀青年人才支持计划重点项目(gxyqZD2016327)

摘　　要：在SnCl_2-H_2C_2O_4-PVP(聚乙烯吡络烷酮)-H_2O的水热体系中,180℃下反应10 h制备了粒径约为900 nm的四方结构的SnO_2微球。以SnO_2微球为基底,通过光还原法,制备了Ag/SnO_2复合微球。用X射线衍射(XRD),扫描电子显微镜(SEM)对产物进行结构表征,并提出了可能的化学反应。以酸性大红为例,研究了SnO_2微球和Ag/SnO_2复合物的光催化性能,结果表明,SnO_2微球和Ag/SnO_2复合物对酸性大红的降解均有一定的光催化效果,而且,Ag的复合可以有效提高SnO_2微球的光催化活性。The SnO2micosphereswith the diameters of about 900nm were synthesized via a simple hydrothermal reaction of SnCl2·2H2O with H 2C2O4·2H2O and PVP at 180 o C for 10 h.Ag/SnO2 composites were prepared by thephotoreduction of AgNO 3.Morphologies and structures of the products were characterized by means of scanning electron microscopy,X–ray diffraction,and possible chemical reactions were proposed.The photocatalytic activity of the as-prepared SnO2 and Ag/SnO2 composite for the degradation ofacidscarlet dye was studied.The results show that they are effective photocatalystsfor the degradation of acid scarlet dye,and the photocatalytic performance of SnO2micospheres was improvedbecause of the Ag composite.

关 键 词：SnO2微球 Ag/SnO2复合物 光催化性能 

分 类 号：O614.12[理学—无机化学]