Photocatalytic degradation of methyl orange with commercial organic pigment sensitized TiO2

摘要：

　　In this paper,TiO2 photocatalyst sensitized with commercial organic pigment,C.I.Pigment Yellow 154 (PY) or C.I.Pigment Red 254 (PR) was prepared by solvothermal method,respectively.Photocatalytic activities of the as-prepared pigment/TiO2 composites was evaluated by the degradation of the methyl orange (MO) under visible light irradiation.Micmstructural,morphological,and optical properties of the as-prepared pigment/TiO2 composites were characterized by X-ray diffraction technique (XRD),BET surface area analysis,UV-vis diffuse reflectance spectrum (UV-vis DRS).Results displayed that the as-prepared pigment/TiO2 composites have high visible light photocatalytic activity and stability.The TOF of pigrnent/TiO2 based on the content of pigment had nearly loss when the photocatalyst was used four times.The remarkable enhancement in the visible light photocatalytic activities of the pigment/TiO2 heterostructures could be attributed to the effective electron-hole separations at the interfaces of the two semiconductors.

关键词： Commercial organic pigment Methyl orange TiO2 Photocatalysis Visible light

作者: Xili Shang Bin Li Tianyong Zhang Changhai Li Xiao Wang

作者单位: School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;Department School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China Department of Chemistry and Chemical Engineering, Binzhou University, Binzhou 256603, China

会议类型: 国际会议

会议名称: 2013 International Symposium on Environmental Science and Technology(2013环境科学与技术国际会议)

会议地点: 大连

会议语种:英文

页码: 388-393

在线出版日期: 2013-06-04（万方平台首次上网日期，不代表论文的发表时间）