Cs_(x)WO_(3)/SiO_(2)复合气凝胶的结构调控及其吸附/光催化性能  

Structural control and adsorption/photocatalytic performance of Cs_(x)WO_(3)/SiO_(2) composite aerogels

作　　者：宋晓颖 刘敬肖 史非 李天赐 张浩源 马静 SONG Xiaoying;LIU Jingxiao;SHI Fei;LI Tianci;ZHANG Haoyuan;MA Jing(School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, China)

机构地区：[1]大连工业大学纺织与材料工程学院,辽宁大连116034

出　　处：《大连工业大学学报》2022年第1期53-57,共5页Journal of Dalian Polytechnic University

基　　金：国家自然科学基金项目(51778098);大连市科技发展补助资金项目(2016415);大连市科技创新基金计划(2018J12SN066).

摘　　要：为充分利用SiO_(2)气凝胶的优异吸附性能和Cs_(x)WO_(3)的光催化性能,通过一锅溶剂热法制备Cs_(x)WO_(3)/SiO_(2)复合气凝胶,并研究了贵金属Pt掺杂对其结构及吸附/光催化性能的影响。采用XRD、SEM、TEM和BET对制备的复合气凝胶进行晶相、微观结构和孔结构分析;通过傅里叶红外光谱仪分析复合气凝胶表面官能团;利用多功能光化学反应仪及紫外可见分光光度计测试其吸附/光催化性能。结果表明,复合气凝胶的主晶相为Cs_(0.20)WO_(3),且具有介孔结构,Pt掺杂有利于增强Cs_(x)WO_(3)/SiO_(2)复合气凝胶的光催化能力,对罗丹明B表现出较好的吸附/光催化活性。In order to make full use of the excellent adsorption property of SiO_(2) aerogels and the photocatalytic properties of Cs_(x)WO_(3),Cs_(x)WO_(3)/SiO_(2) composite aerogels were prepared by a one-pot solvothermal method.The influence of the noble metal Pt doping on its structure and adsorption/photocatalytic performance was studied.The crystalline phase,microstructure and pore structure of the composite aerogel were investigated by XRD,SEM,TEM and BET.The surface functional groups of the composite aerogels were analyzed by Fourier transform infrared spectroscopy.The adsorption/photocatalytic reactions were performed in a multifunctional photochemical reactor and UV-Vis spectrophotometer was used to evaluate the adsorption/photocatalytic performance.The results showed that the main crystalline phase of the composite aerogels is Cs_(0.20)WO_(3),and they possess a mesoporous structure.Pt doping is beneficial to enhance the photocatalytic performance of the Cs_(x)WO_(3)/SiO_(2) composite aerogel,and the composite aerogel exhibits good adsorption/photocatalytic activity for rhodamine B.

关 键 词：Cs_(x)WO_(3)/SiO_(2)复合气凝胶 PT掺杂 一锅溶剂热法 吸附/光催化 

分 类 号：TQ131.1[化学工程—无机化工]