Preparation of the porous cerium dioxide film by two-step anodization and heat treating method

1st International Global on Renewable Energy and Development

Liu, Xiaozhen^1 ; Zhu, Bolun^1 ; Liu, Yuze^2 ; Wang, Shanshan^1 ; Chen, Jie^3 ; Wang, Xiaoyu^1

School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai

201418, China^1

College of Economic and Management, Beijing Forestry University, Beijing

10083, China^2

Regenia AB, Stockholm

10691, Sweden^3

关键词: Cerium dioxide films;    Energy dispersive analysis;    Fourier transform infrared;    Heat treating methods;    Scanning electrons;    Strong absorptions;    Two step anodization;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/100/1/012109/pdf
DOI  :  10.1088/1755-1315/100/1/012109

来源: IOP

【 摘 要 】

The porous cerium dioxide films were prepared with cerium foils as raw materials by two-step anodization and heat treating method. The anodic cerium oxide films were heat treated in 25∼400 C respectively. The cerium dioxide films were characterized with X-ray diffraction (XRD), Fourier transform infrared (FTIR) techniques, energy-dispersive analyses of X-ray (EDAX) and scanning electron microcopy (SEM), respectively. The anodic cerium oxide film is composed of Ce(OH)3, CeO2and Ce2O3. When the anodic cerium oxide films were heat treated in 300 C∼400 C for 2h, Ce(OH)3and Ce2O3in the anodic cerium oxide films may be converted to CeO2, and the heat treated anodic cerium oxide films are the cerium dioxide films. Water, ethylene glycol and CO2are adsorbed in the anodic cerium oxide film. The adsorbing water, ethylene glycol and CO2in the anodic cerium oxide film are removed at 300 C. The cerium dioxide film has strong absorption in the range of 1600∼4000cm-1. The structure of the cerium dioxide film is the porous.