摘要
以钛酸四丁酯为钛源,H2Pt Cl6·6H2O为Pt源,采用溶胶-凝胶法制备了高性能可见光Pt/Ti O2光催化材料。采用XRD和UV-Vis对制备样品进行了表征。XRD结果表明,制备Ti O2为锐钛矿相结构,Pt的加入未改变Ti O2的晶相结构,且未发现Pt的相关衍射峰。UV-Vis测试结果表明,0.6%Pt/Ti O2样品表现出较好的可见光吸收性能。在可见光条件下,以亚甲基蓝溶液为模拟污染物对Pt/Ti O2的光催化性能进行考察。实验结果表明,随Pt掺杂量增加,亚甲基蓝降解速率常数先增大后趋于平缓,0.6%Pt/Ti O2的光催化效率最高。采用XPS对Pt/Ti O2样品产生可见光催化活性的机理进行了分析。
Using H2 Pt Cl6·6H2O and tetrabutyl titanate as Pt and Ti precursors,high performance Pt / Ti O2 visible light catalytic materials were successfully fabricated by sol-gel method. XRD and UV-Vis spectra were adopted to characterize the samples. XRD results indicated that the Ti O2 was anatase structure and the Pt-doping did not change the phase structure of Ti O2 and no characteristic diffraction peaks of Pt species were detected. UV-Vis spectra showed that 0. 6% Pt /Ti O2 exhibited good visible light absorption. Methylene blue was used as the model pollution agent to evaluate the visible light activity of Pt / Ti O2. The results showed that with increasing the Pt doping amount,methylene blue degradation rate constant achieved the highest photocatalytic efficiency at 0. 6% Pt doping amount,and then kept at a constant level.XPS spectra were adopted to analyze the mechanism of visible light photocatalytic activity.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2015年第8期8072-8075,8080,共5页
Journal of Functional Materials
基金
2014年辽宁省大学生创新创业训练计划资助项目(201411258014)
辽宁省高等学校优秀科技人才支持计划资助项目(LR2012042)
