1. 上海应用技术大学化学与环境工程学院,上海 201418
2. 赣南师范大学,江西 赣州 341000
3. Regenia AB, Stockholm 10691, Sweden
Preparation of the Porous CeO2 Film and Its Spectral Properties
LIU Xiao-zhen1, SHI Xing-ju1, LIU Xiao-zhou2, REN Xiao-hui1, CHEN Jie3, ZHOU Jie-hua1
1. School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 201418, China
2. Gannan Normal University, Ganzhou 341000, China
3. Regenia AB, Stockholm 10691, Sweden
Abstract:The porous CeO2 films were prepared with anodization and heat treating method with cerium foils as raw materials. The anodic cerium oxide films were heat treated at 400, 500 and 800 ℃ respectively. The crystal structures, compositions, surface morphologies of the cerium dioxide films were investigated, respectively. The properties of IR characteristic absorption and thermal expansion of the porous CeO2 film were investigated respectively. The anodic cerium oxide film is composed of Ce(OH)3, CeF3, CeO2, Ce2O3 and Ce, and the crystal structures of Ce(OH)3, CeF3, Ce2O3 and CeO2, Ce are hexagonal and cubic respectively. Water and ethylene glycol are adsorbed on the anodic cerium oxide film. When the anodic cerium oxide films were heat treated at 400 and 500 ℃ respectively, Ce(OH)3, Ce2O3 and Ce in the anodic cerium oxide film may be converted to CeO2, and the heat treated films are composed of CeF3 and CeO2 respectively. When the anodic cerium oxide film was heat treated at 800 ℃, Ce(OH)3, CeF3, Ce2O3 and Ce in the anodic cerium oxide film are converted to CeO2, and the heat treated film is composed of CeO2. The heat treated anodic cerium oxide film of heat treatment at 800 ℃ is CeO2 film. The CeO2 film is porous film, and the hole is a straight hole. The porous CeO2 film has strong absorption in the range of 1 600~4 000 cm-1. The coefficients of thermal expansion of the porous CeO2 film are almost constant in the range of 170~900 ℃. The porous CeO2 film has good thermal stability.
基金资助: The project supported by the National Natural Science Foundation of China (51372153, 51572176), Shanghai Municipal Education Commission (Plateau Discipline Construction Program, 0817), Collaborative Innovation Fund of Shanghai Institute of Technology (XTCX2017-5)
作者简介: LIU Xiao-zhen, (1958—), female, Professor of School of Chemical and Environmental Engineering, Shanghai Institute of Technology Shanghai e-mail:
liuxiaozhen5291@163.com
引用本文:
刘小珍,石兴菊,刘小舟,任晓辉,陈 捷,周洁华. 多孔CeO2膜的制备及其光谱性能[J]. 光谱学与光谱分析, 2018, 38(04): 1324-1328.
LIU Xiao-zhen, SHI Xing-ju, LIU Xiao-zhou, REN Xiao-hui, CHEN Jie, ZHOU Jie-hua. Preparation of the Porous CeO2 Film and Its Spectral Properties. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2018, 38(04): 1324-1328.
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