Dye-sensitized TiO2@SBA-15 composites: Preparation and their application in photocatalytic desulfurization  

作　　者：Guoqing Guo Haiyang Guo Feng Wang Liam John France Wanxin Yang Zhihong Mei Yinghao Yu 

机构地区：[1]School of Chemistry and Chemical Engineering, South China University of Technology

出　　处：《Green Energy & Environment》2020年第1期114-120,共7页绿色能源与环境（英文版）

基　　金：This research was funded by National Natural Science Foundation of China (Grant No. 21676099);the Fundamental Research Funds for the Central Universities, South China University of Technology

摘　　要：Photocatalytic oxidation desulfurization has become a research hotspot in recent years because of mild reaction conditions, less energy consumption and high selectivity. In this paper, TiO2 was loaded onto SBA-15 molecular sieves and sensitized with organic dyes(2, 9-dichloroquinacridone, DCQ) to extend its spectral response range from ultraviolet light to visible light. The catalyst DCQ-X%TiO2@SBA-15 was characterized by BET measurements, X-ray diffraction, Fourier transform infrared spectroscopy and Ultraviolet-visible diffuse reflection spectra, and then it was applied for photocatalytic oxidation desulfurization of gasoline. The effects of different catalytic systems, TiO2 concentration, catalyst dosage, and different model sulfur compounds on catalytic desulfurization performance were investigated. Experimental results show that DCQ-TiO2@SBA-15 has a better performance than the unsensitized TiO2@SBA-15, and the desulfurization rate can reach up to 96.1% in a reaction time of 90 min.Photocatalytic oxidation desulfurization has become a research hotspot in recent years because of mild reaction conditions, less energy consumption and high selectivity. In this paper, TiO2 was loaded onto SBA-15 molecular sieves and sensitized with organic dyes（2, 9-dichloroquinacridone, DCQ） to extend its spectral response range from ultraviolet light to visible light. The catalyst DCQ-X%TiO2@SBA-15 was characterized by BET measurements, X-ray diffraction, Fourier transform infrared spectroscopy and Ultraviolet–visible diffuse reflection spectra, and then it was applied for photocatalytic oxidation desulfurization of gasoline. The effects of different catalytic systems, TiO2 concentration, catalyst dosage, and different model sulfur compounds on catalytic desulfurization performance were investigated. Experimental results show that DCQ-TiO2@SBA-15 has a better performance than the unsensitized TiO2@SBA-15, and the desulfurization rate can reach up to 96.1% in a reaction time of 90 min.

关 键 词：TIO2 DYE-SENSITIZATION Gasoline desulfurization PHOTOCATALYSIS 

分 类 号：O643.36[理学—物理化学] O644.1[理学—化学] TB33[一般工业技术—材料科学与工程] TE624.5[石油与天然气工程—油气加工工程]