退火温度对溶胶-凝胶法制备的TiO2/石墨烯复合材料性能影响  

Influence of Annealing Temperature on the Properties of TiO2/Graphene Composite Prepared by Sol-Gel Method

作　　者：林玲 王威 唐正霞[1,2] 刘季锦花 赵婷婷 张昕曜 LIN Ling;WANG Wei;TANG Zhengxia;LIU JIjinhua;ZHAO Tingting;ZHANG Xinyao(School of Materials Engineering,Jinling Institute of Science and Technology,Nanjing 211169,China;Nanjing key Laboratory of Optometric Materials and Technology,Nanjing 211169,China)

机构地区：[1]金陵科技学院材料工程学院,南京211169 [2]南京市视光材料与技术重点实验室,南京211169

出　　处：《电子器件》2019年第5期1085-1089,共5页Chinese Journal of Electron Devices

基　　金：国家自然科学基金(61804069);江苏省大学生创新训练重点项目(201813573014Z);校科研激励项目(jit-fhxm-201609)

摘　　要：为了研究退火温度对TiO 2/石墨烯复合材料物相结构、微观形貌、光催性能的影响,采用溶胶-凝胶法制备TiO 2/石墨烯复合材料,并分别在350℃、450℃和550℃对复合材料进行退火处理。研究结果表明,随着退火温度的升高,TiO 2/石墨烯复合材料的晶粒尺寸逐渐增加,结晶性变好,出现了卷曲状的石墨烯;光催化性能先增大后降低。当退火温度为450℃时,复合材料禁带宽度为2.9 eV,具有最佳的光催化活性。To study the effect of annealing temperature on phase structure,microstructure and photocatalytic properties of TiO 2/graphene composites,TiO 2/graphene composites were prepared by sol-gel method and annealed at 350℃,450℃and 550℃,respectively.The results show that with the increase of annealing temperature,the grain size of TiO 2/graphene composites increase gradually,the crystallinity become better,and curly graphene appears,and the photocatalytic activity increase first and then decrease.When the annealing temperature is 450℃,the band gap of composite is 2.9 eV,which has the best photocatalytic activity.

关 键 词：光催化性能 TIO 2/石墨烯复合材料 退火温度 溶胶-凝胶法 

分 类 号：O643.3[理学—物理化学]