Analysis on Photocatalytic Performance of Metal Sulfide Modified TiO2 by High-throughput Screening Technology
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KeyWord:high-throughput screening technology  inkjet printing  TiO2  microreaction chip  photocatalysis
TIAN Rui-xing,MA Guo-dong 陕西师范大学地理科学与旅游学院
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      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.