Citation: Gao Zicheng, Liu Jing, Xia Yunsheng, Bao Decai. One-Step Preparation and Characterization of High Specific Surface Area Mesoporous Co₃O₄-CeO₂[J]. Chemistry, ;2020, 83(2): 121-126. shu

One-Step Preparation and Characterization of High Specific Surface Area Mesoporous Co₃O₄-CeO₂

College of Chemistry and Chemical Engineering, Bohai University, Jinzhou, 121013

Corresponding author: Xia Yunsheng, xiayunsheng@126.com
Received Date: 12 September 2019
Accepted Date: 12 November 2019

Figures(7)

Using ordered mesoporous silica KIT-6 as hard template, cobalt nitrate and cerium nitrate as metal sources, mesoporous CoCeO_x composite oxides were prepared by impregnation, filling, calcination, template removal and drying under vacuum-assisted conditions and ordinary stirring conditions. The physical and chemical properties of the composite oxides were characterized by XRD, SEM, TEM and N₂ adsorption and desorption techniques. The oxidation performance of toluene was evaluated. The results show that the CoCeO_x oxides prepared under vacuum-assisted and stirring conditions are mesoporous Co₃O₄-CeO₂ composite oxides composed of Co₃O₄ and CeO₂. Their specific surface areas are 141 and 89 m²·g^-1, respectively. The average pore sizes are 8.7 and 9.6 nm, respectively. The vacuum-assisted nano-replication process is conducive to the full filling of metal salt precursors into the pores of template KIT-6. The prepared mesoporous cobalt-cerium composite oxide has the characteristics of good pore order and large specific surface area, and has certain application prospects in the oxidation removal of volatile organic compounds.
- Hard template method,
- Vacuum assisted technology,
- Mesoporous material,
- Metal complex,
- Toluene oxidation
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

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通讯作者: 陈斌, bchen63@163.com

One-Step Preparation and Characterization of High Specific Surface Area Mesoporous Co₃O₄-CeO₂