Chinese Journal of Catalysis ›› 2014, Vol. 35 ›› Issue (5): 770-775.DOI: 10.1016/S1872-2067(14)60023-1

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Application of surface-modified carbon powder in microbial fuel cells

Gaixiu Yanga,b, Yongming Sunb, Zhenhong Yuanb, Pengmei Lüb, Xiaoying Kongb, Lianhua Lib, Guanyi Chena, Tianhong Luc   

  1. a School of Environmental Science and Technology, State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China;
    b CAS Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, Guangdong, China;
    c Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Environmental Science, Nanjing Normal University, Nanjing 210097, Jiangsu, China
  • Received:2013-10-18 Revised:2014-01-02 Online:2014-04-18 Published:2014-04-24
  • Supported by:

    This work was supported by the National Natural Science Foundation of China (21006105) and Opening Project of Key Laboratory of Bioenergy of Henan Province.

Abstract:

The catalytic activity of surface-modified carbon powder, Vulcan XC-72R (XC), for the oxygen reduction reaction (ORR) at an air cathode in a microbial fuel cell (MFC) has been investigated. The effects of treatment with different chemicals such as nitric acid and ammonia on the chemical characteristics of XC were studied. The catalysts were characterized by Fourier transform infrared spectroscopy (FTIR), Boehm titration, and X-ray photoelectron spectroscopy. FTIR analysis showed that the functional groups of the materials were changed by chemical treatment, with nitric acid causing the introduction of oxygen-containing groups, and ammonia leading to the introduction of nitrogen-containing groups. Electrochemical measurements of MFCs containing various modified carbon materials as ORR catalysts were performed, and the results showed that chemically modified carbon materials are promising catalysts in MFCs.

Key words: Microbial fuel cell, Oxygen reduction reaction, Carbon powder, Vulcan XC-72R, Surface modification, Electricity generation