锐钛型多孔Nano-TiO2的制备及其光催化特性的研究  

Preparation of Porous Nano-TiO2 with Anatase Phase and Study on Its Photocatalysis Property

作　　者：徐晓壮 涂洁磊[1] 盛钰清 章威 郭腾腾 张刘柱 宋冠宇 颜平远 XU Xiao-zhuang;TU Jie-lei;SHENG Yu-qing;ZHANG Wei;GUO Teng-teng;ZHANG Liu-zhu;SONG Guan-yu;YAN Ping-yuan(Yunnan Provincial Key Laboratory of Rural Energy Engineering,Solar Energy Research Institute,Yunnan Normal University,Kunming 650500,China)

机构地区：[1]云南师范大学太阳能研究所,教育部可再生能源材料先进技术与制备重点实验室,云南昆明650500

出　　处：《云南师范大学学报（自然科学版）》2020年第2期10-14,共5页Journal of Yunnan Normal University:Natural Sciences Edition

基　　金：国家自然科学基金资助项目(61664010).

摘　　要：利用钛酸丁酯(TBOT)为钛源,采用溶胶—凝胶法制备得到纳米二氧化钛(Nano-TiO2),扫描电子显微镜(SEM)检测为多孔纳米二氧化钛;X射线衍射仪(XRD)测试显示其晶体结构为锐钛型(2θ=25.22°).使用紫外光下降解亚甲基蓝水溶液,研究了不同pH值及不同TiO2加入量对亚甲基蓝降解率的影响,其结果显示该Nano-TiO2薄膜具备良好的光催化特性,此时的最佳配比为n(TBOT)∶n(ETOH)∶n(H2O)=1∶10∶5,在溶液pH值为2的条件下,最高降解率达到89.7%.In this paper,butyl titanate(TBOT)was used as the titanium source,and nano-titanium dioxide(Nano-TiO2)was prepared by the sol-gel method.The scanning electron microscope(SEM)detected the porous nano-titanium dioxide.Its crystal structure is anatase(2θ=25.22°).In addition,the degradation of methylene blue in water under ultraviolet light was used to study the effects of different pH values and different amounts of TiO2 on the degradation rate of methylene blue.The results show that the Nano-TiO2 film has good photocatalytic properties.The best ratio at this time is n(TBOT)∶n(ETOH)∶n(H 2O)=1∶10∶5.Under the condition that the pH of the solution is 2,the highest degradation rate is 89.7%.

关 键 词：溶胶-凝胶 纳米二氧化钛 亚甲基蓝降解 自清洁薄膜 

分 类 号：TQ134[化学工程—无机化工]