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高通量筛选技术用于金属硫化物修饰的TiO2的光催化性能分析
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作者单位
田瑞星,马国栋 陕西师范大学地理科学与旅游学院 
基金项目:国家自然科学基金项目(50309011);陕西省科研项目(2011K17-03-06);留学回国人员科研启动基金资助项目(08501041585)
中文摘要:基于高通量筛选技术和喷墨打印,建立了一种快速分析不同配比的光催化剂催化效率的方法。采用光刻法制备了具有数以千计的独立反应单元的微反应芯片,选择Ni、Cd、Zn 3种金属元素掺杂TiO2,建立了900种不同组装硫化物金属TiO2催化剂库。再以不同微反应单元的荧光为基础,通过一次实验反应,快速筛选出具有不同比例的3种高效光催化材料的微反应芯片:(Ni0.28Cd0.32Zn0.40)SX/TiO2,(Ni0.43Cd0.29Zn0.28)SX/TiO2,(Ni0.17Cd0.56)SX/TiO2。此外,通过宏观验证实验对筛选出的3种催化剂活性进行验证,同时与纯TiO2降解曙红溶液进行对比。结果测得3种催化剂的降解率分别达94.2%、90.5%和87.6%,而纯TiO2的降解效率最低(41.3%)。表明筛选出的3种催化剂对曙红溶液具有高效的光催化降解性能。
中文关键词:高通量筛选技术  喷墨打印  TiO2  微反应芯片  光催化
 
Analysis on Photocatalytic Performance of Metal Sulfide Modified TiO2 by High-throughput Screening Technology
Abstract:Based on high-throughput screening technology and inkjet printing,a rapid method was established for the analysis on photocatalytic efficiencies of photocatalysts with different proportions.In this experiment,a microreaction chip with thousands of independent reaction units was prepared by photolithography,and three metal elements of Ni,Cd and Zn were selected to dope into TiO2.Then a catalyst library including 900 different metal sulfides assembled TiO2 was established.Three high efficiency of photocatalytic materials with different ratios:(Ni0.28Cd0.32Zn0.40)SX/TiO2,(Ni0.43Cd0.29Zn0.28)SX/TiO2 and(Ni0.17Cd0.56Zn0.27)SX/TiO2 were quickly screened out on the basis of the fluorescence emitted by different microreaction units through once experimental reaction.In addition,the activities for three catalysts were verified by macro verification experiments,and a group of pure TiO2 degraded eosin solutions without load were compared.Results showed that the degradation rates for 3 catalysts were 94.2%,90.5% and 87.6%,respectively,while the pure TiO2 without load had the lowest degradation efficiency(41.3%).The results showed that the as-prepared catalysts were of high efficiency in photocatalytic degradation on eosin solution.
Key Words:high-throughput screening technology  inkjet printing  TiO2  microreaction chip  photocatalysis
引用本文:田瑞星,马国栋.高通量筛选技术用于金属硫化物修饰的TiO2的光催化性能分析[J].分析测试学报,2018,37(9):1066-1070.
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