Ce-doped titania nanoparticles: The effects of doped amount and calcination temperature on photocatalytic activity

1st International Conference on New Material and Chemical Industry

材料科学;化学工业

Shi, Jianwen^1 ; Zou, Yajun^1 ; Ma, Dandan^1

Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'An Jiaotong University, Xi'an

710049, China^1

关键词: Calcination temperature;    Calcined temperature;    Diffuse reflectance spectrum;    Lattice distortions;    Photo catalytic degradation;    Photocatalytic activities;    Photons absorption;    TiO2 nano-particles;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/167/1/012039/pdf
DOI  :  10.1088/1757-899X/167/1/012039

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

A series of Ce-doped TiO2nanoparticles with different doped amount and calcination temperature were prepared by sol-gel method. These obtained samples were characterized with X-ray diffraction (XRD), transmission electron microscope (TEM) and ultraviolet-visible diffuse reflectance spectra (DRS), and their photocatalytic activities were evaluated by the photocatalytic degradation of methyl orange. Results showed that Ce doping inhibits the growth of crystal size and the phase transformation from anatase to rutile, leads to lattice distortion and expansion of TiO2. Furthermore, Ce doping brings the red-shift of absorption profile and the increase of photons absorption in the range of 400-600 nm. Photocatalytic degradation of methyl orange shows that Ce doping improves the photocatalytic activity of TiO2. The optimal doped amount is 0.05 mol% and the optimal calcined temperature is 600 °C for the maximum photocatalytic degradation efficiency in our experiment.