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Citation: XU Hai-Qing, LIU Xiu-Ning, WANG Yu-Qiao, WANG Hua-Lin, SUN Yue-Ming. Electro-Catalytic Performance of Composite Oxide Sn-Sb-Mn/Ceramic Particle Electrode System[J]. Acta Physico-Chimica Sinica, ;2009, 25(05): 840-846. doi: 10.3866/PKU.WHXB20090509 shu

Electro-Catalytic Performance of Composite Oxide Sn-Sb-Mn/Ceramic Particle Electrode System

1.
School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, P. R. China; Nanjing Sage Environmental Protection Science &Technology Co. Ltd., Nanjing 210004, P. R. China

Corresponding author: LIU Xiu-Ning, WANG Yu-Qiao, WANG Hua-Lin, SUN Yue-Ming, sun@seu.edu.cn
Received Date: 15 October 2008
Available Online: 5 March 2009

Sn-Sb-Mn/ceramic particle electrodes were prepared by a thermal decomposition technique. The morphology, crystal phase composition, BET surface area and pore size distribution of the electrodes were characterized by means of scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD) and N2 physical adsorption techniques, respectively. The properties of oxygen evolution at the three-dimensional electrode system were studied and the electrocatalytic property was investigated by cyclic voltammetry. The electrochemical degradation of artificial phenol wastewater was conducted in a multi-electrode reactor. Results showed that the catalytic layer of as-prepared ceramic particle electrodes had large BET surfaces and abundant micropores, which were beneficial for the electrocatalytic reaction. Results also indicated that the electrocatalytic degradation occurred where oxygen evolution took place. The multi-electrode system was far better at degrading phenol than a two-dimensional electrode system. The removal ratio of phenol and total organic carbon (TOC) were 92.3% and 66.7%, respectively. This study demonstrates that a three-dimensional electrode system exhibits excellent electrocatalytic performance.
- Ceramic substrate particle electrode,
- Property of oxygen evolution,
- Cyclic voltammetry,
- Electrical catalytic degradation
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