Photocatalytic decomposition of methylene orange using nitrogen-doped titania prepared by ultrasonic technique

4th International Conference on Advanced Composite Materials and Manufacturing Engineering 2017

材料科学;化学

Zhang, Huifang^1,2 ; Sun, Ling^1 ; Cao, Wenping^1 ; Liu, Hanhu^2

College of Environmental Engineering, Xuzhou Institute of Technology, Xuzhou Jiangsu

221000, China^1

School of Environmental Science and Spatial Informatics, China University of Mining and Technology, Xuzhou Jiangsu

221000, China^2

关键词: Diffuse reflectance spectroscopy;    Nano-particle dispersions;    Photocatalytic activities;    Photocatalytic decomposition;    Physicochemical property;    Powder X ray diffraction;    UV-vis diffuse reflectance spectra;    Visible-light irradiation;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/207/1/012067/pdf
DOI  :  10.1088/1757-899X/207/1/012067

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Nitrogen-doped titania (TiO2) photocatalysts were prepared by sol-gel process coupled with ultrasonic irradiation at room temperature. The photocatalytic decomposition of methyl orange (MO) solution under ultraviolet and visible light irradiation was used as a probe reaction to estimate their photocatalytic activities. The physico-chemical properties of the samples were investigated by powder X-ray diffraction (XRD), transmission electron microscopy (TEM), diffuse reflectance spectroscopy (DRS), and X-ray photoelectron spectroscopy (XPS). A more uniform nanoparticle dispersion, marginally higher surface area, smaller grain size, and higher phase purity are some advantages of preparing TiO2by the ultrasonic technique. The nitrogen-doped titania prepared by ultrasonic technique were more effective than the samples prepared by conventional stirring method. Its UV-Vis diffuse reflectance spectra was red shifted compared to the un-doped sample and it showed high decomposition of MO under ultraviolet as well as visible light irradiation.