Honeycomb nano cerium oxide fabricated by vacuum drying process with sodium alginate

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

材料科学;化学

Zhao, Guozheng^1,2 ; Li, Changbo^1 ; Zhang, Honglin^1

Liaoning Technical University, College of Mining, Liaoning Fuxin

123000, China^1

Liaoning Shihua University, College of Chemistry, Chemical Engineering and Environmental Engineering, Liaoning Fushun

113001, China^2

关键词: Biological templates;    Catalytic wet oxidation;    COD removal rate;    Drying methods;    High concentration organic wastewater;    High crystallinity;    Uniform dispersions;    Vacuum drying process;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/207/1/012001/pdf
DOI  :  10.1088/1757-899X/207/1/012001

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Nano cerium oxide (CeO2) with honeycomb structure were synthesized simply and rapidly by vacuum drying method with sodium alginate as the biological template agent, Ce(NO3)3•6H2O as cerium source. The composition, aperture size, specific surface area and morphology of the prepared samples were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), N2 adsorption-desorption and scanning electron microscopy (SEM). Simultaneously, the effects on the morphology of the samples, which were caused by the drying method and the concentration of sodium alginate, were investigated. The results indicate that the prepared samples were nano CeO2 with high crystallinity and uniform dispersion, most of which had mesoporous, macroporous and honeycomb structure. The specific surface area of CeO2 is 210.0 m2/g, and the average aperture is 12.77 nm. The prepared samples can act as catalyst in the catalytic wet oxidation process for the treatment of high concentration organic wastewater, and the COD removal rate could exceed 90%.