期刊
BIORESOURCE TECHNOLOGY
卷 206, 期 -, 页码 285-289出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2016.01.112
关键词
Iron-nitrogen-activated carbon; Microbial fuel cell; Oxygen reduction reaction; Electrochemical catalysis
In order to improve the performance of microbial fuel cell (MFC), iron-nitrogen-activated carbon (Fe-N-C) as an excellent oxygen reduction reaction (ORR) catalyst was prepared here using commercial activated carbon (AC) as matrix and employed in single chamber MFC. In MFC, the maximum power density increased to 2437 +/- 55 mW m(-2), which was 2 times of that with AC. The open circuit potential (OCP) of Fe-N-C cathode (0.47) was much higher than that of AC cathode (0.21 V). The R-0 of Fe-N-C decreased by 47% from 14.36 Omega (AC) to 7.6 X (Fe-N-C). From X-ray photoelectron spectroscopy (XPS), pyridinic nitrogen, quaternary nitrogen and iron species were present, which played an important role in the ORR performance of Fe-N-C. These results demonstrated that the as-prepared Fe-N-C material provided a potential alternative to Pt in AC air cathode MFC for relatively desirable energy generation and wastewater treatment. (C) 2016 Elsevier Ltd. All rights reserved.
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