空心球状C@SnO2@SnS2的制备及光催化去除Cr（Ⅵ）性能研究  

Preparation and photocatalytic activity for Cr（Ⅵ）removal of hollow spherical C@SnO2@SnS2

作　　者：娄向东[1] 魏崇 赵晓华[1,2] 潘楠楠 崔佳宝 LOU Xiang-dong;WEI Chong;ZHAO Xiao-hua;PAN Nan-nan;CUI Jia-bao(School of Chemistry and Chemical Engineering,Henan Normal University,Xinxiang 453007,China;School of Environment,Henan Normal University,Xinxiang453007,China)

机构地区：[1]河南师范大学化学化工学院,河南新乡453007 [2]河南师范大学环境学院,河南新乡453007

出　　处：《化学研究与应用》2020年第1期57-66,共10页Chemical Research and Application

基　　金：国家自然科学基金项目(21573059)资助;河南省高等学校重点科研项目(18A150033)资助;河南师范大学博士启动基金项目(qd17121,qd16109)资助

摘　　要：将SnO2负载在碳球上通过不完全烧结的方法得到含有大量碳的空心状C@SnO2,随后加入TAA(硫代乙酰胺),利用离子交换法在水热过程中制备了具有不同硫化程度的空心结构的C@SnO2@SnS2三元复合物。利用XRD、FESEM、TEM、XPS、UV-Vis DRS、PL等测试手段对合成样品进行表征,并测试了其光催化去除Cr(VI)的性能。结果表明,C、SnO2和SnS2三者之间的协同作用以及空心结构的形貌显著增强了SnO2的光催化性能,其中CSS-2样品对Cr(VI)具有最佳的去除能力,太阳光照射120 min后对Cr(VI)的去除率高达98.8%。The SnO2 was supported on carbon sphere to obtain hollow C@SnO2 containing a large amount of carbon by incomplete sintering.Subsequently,TAA(thioacetamide)was added,and the C@SnO2@SnS2 ternary composites having hollow structures with different degrees of vulcanization were prepared by ion exchange in a hydrothermal process.The synthesized samples were characterized by XRD,FESEM,TEM,XPS,UV-Vis DRS and PL.The performance of Cr(VI)removal were tested.The results show that the synergistic effect among C,SnO2 and SnS2 as well as the morphology of the hollow structure can significantly enhance the photocatalytic performance of SnO2,the CSS-2 sample has the best removal ability for Cr(VI),the removal rate of Cr(VI)can reach 98.8%after 120 min sunlight illumination.

关 键 词：SNO2 SnS2 碳材料 异质结 Cr(VI)去除 

分 类 号：O643.36[理学—物理化学]