TiO_(2)@SBA-15的合成及其光解性能  

Synthesis of TiO_(2)@SBA-15 and Its Photocatalytcc Performance

作　　者：汪钰萍 张永锁 郑慧 赵福平 丁志杰 柏雷 汪徐春 WANG YuPing;ZHANG Yongsuo;ZHENG Hui;ZHAO FuPing;DING Zhijie;BAI Lei;WANG Xuchun(College of Chemistry and Materials Engineering,Anhui Science and Technology University,Bengbu 233100,China)

机构地区：[1]安徽科技学院化学与材料工程学院,安徽蚌埠233100

出　　处：《材料科学与工程学报》2021年第6期906-911,共6页Journal of Materials Science and Engineering

基　　金：Science and Technology Major Project of Anhui Province(18030901087);University Collaborative Innovation Project of Anhui Province(GXXT2019023);College Students Innovation and Entrepreneurship Training Program(201710879013)。

摘　　要：以水热沉积法在介孔SBA-15上固载TiO_(2)纳米粒子制得光催化剂TiO_(2)@SBA-15,探讨了TiO_(2)负载量对催化效果的影响。以包括N2吸附-脱附、紫外漫反射光谱(DRS)等手段在内的多种技术手段表征了催化剂的结构。研究结果表明适宜负载量的锐钛矿晶型TiO_(2)纳米粒子可均匀分散在载体SBA-15上,N2吸附-脱附进一步表明载体介孔结构得以保持。适宜TiO_(2)负载量的催化剂20mg紫外光照25min可将100mL的10mg·L^(-1)亚甲基蓝降解完全。TiO_(2)@SBA-15 photocatalyst was synthesized by hydrothermal deposition of titanium dioxide(TiO_(2))nanoparticles using mesoporous SBA-15 as support.The structure of the photocatalyst was characterized by several techniques including ultraviolet visible diffuse reflectance spectroscopy(DRS)and N2 adsorption-desorption.The results from the characterization show that the TiO_(2)nanoparticles was anatase and was uniformly dispersed on the SBA-15.The mesoporous structure of support SBA-15 was kept and confirmed by N2 adsorption-desorption.After 25 min under ultraviolet radiation,100 mL of the methylene blue with the concentration of 10.0 mg·L^(-1)was completely degraded by 20 mg mesoporous TiO_(2)@SBA-15.

关 键 词：介孔材料 光催化降解 亚甲基蓝 吸附 载体 

分 类 号：TQ134.11[化学工程—无机化工] TQ032.41