A high-performance electrocatalytic air cathode derived from aniline and iron for use in microbial fuel cells

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	A high-performance electrocatalytic air cathode derived from aniline and iron for use in microbial fuel cells
	Tang, Xinhua 1,2; Li, Haoran 3; Wang, Weida 4; Du, Zhuwei 3; Ng, How Yong 1
刊名	RSC ADVANCES
	2014
卷号	4 期号:25 页码:12789-12794
关键词	oxygen reduction reaction waste-water treatment electron-transfer catalysts carbon electricity deposition graphite bacteria density
ISSN号	2046-2069
其他题名	RSC Adv.
中文摘要	In this study, a high-performance electrocatalyst derived from aniline and iron was synthesized. The catalyst was prepared by pyrolyzing iron-impregnated polyaniline in an NH3 atmosphere at high temperature. Pyrolyzing in NH3 significantly increases the micropores, and the pyridinic nitrogen on the surface of the catalyst, leading to the excellent performance towards oxygen reduction. The electrocatalytic activity of this catalyst towards the oxygen reduction reaction was evaluated using a rotating ring disk electrode (RRDE). This catalyst exhibits a high onset potential of about 0.92 V (vs. reversible hydrogen electrode, RHE) and the half-wave potential difference between this catalyst and the benchmark Pt/C catalyst is only about 70 mV. The RRDE study also demonstrated that this catalyst for the four-electron reduction of oxygen has a very high selectivity. Applied as air cathodes in microbial fuel cells, the catalyst exhibits an excellent catalytic activity. The MFC with this catalyst achieves a maximum power density of 12.56 W m(-3), higher than the 9.92 W m(-3) of the MFC with a Pt/C catalyst and the 1.34 W m(-3) of the MFC with bare graphite felt. These results demonstrate that this catalyst is an excellent alternative to the prohibitive Pt/C catalyst for practical applications.
英文摘要	In this study, a high-performance electrocatalyst derived from aniline and iron was synthesized. The catalyst was prepared by pyrolyzing iron-impregnated polyaniline in an NH3 atmosphere at high temperature. Pyrolyzing in NH3 significantly increases the micropores, and the pyridinic nitrogen on the surface of the catalyst, leading to the excellent performance towards oxygen reduction. The electrocatalytic activity of this catalyst towards the oxygen reduction reaction was evaluated using a rotating ring disk electrode (RRDE). This catalyst exhibits a high onset potential of about 0.92 V (vs. reversible hydrogen electrode, RHE) and the half-wave potential difference between this catalyst and the benchmark Pt/C catalyst is only about 70 mV. The RRDE study also demonstrated that this catalyst for the four-electron reduction of oxygen has a very high selectivity. Applied as air cathodes in microbial fuel cells, the catalyst exhibits an excellent catalytic activity. The MFC with this catalyst achieves a maximum power density of 12.56 W m(-3), higher than the 9.92 W m(-3) of the MFC with a Pt/C catalyst and the 1.34 W m(-3) of the MFC with bare graphite felt. These results demonstrate that this catalyst is an excellent alternative to the prohibitive Pt/C catalyst for practical applications.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Chemistry, Multidisciplinary
研究领域[WOS]	Chemistry
关键词[WOS]	OXYGEN REDUCTION REACTION ; WASTE-WATER TREATMENT ; ELECTRON-TRANSFER ; CATALYSTS ; CARBON ; ELECTRICITY ; DEPOSITION ; GRAPHITE ; BACTERIA ; DENSITY
收录类别	SCI
原文出处	://WOS:000332485000021
语种	英语
WOS记录号	WOS:000332485000021
公开日期	2014-05-06
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.ipe.ac.cn/handle/122111/8115]
专题	过程工程研究所_研究所（批量导入）
作者单位	1.Natl Univ Singapore, Ctr Water Res, Dept Civil & Environm Engn, Singapore 117576, Singapore 2.Natl Univ Singapore, NUS Grad Sch Integrat Sci & Engn, Singapore 117456, Singapore 3.Chinese Acad Sci, Inst Proc Engn, Natl Key Lab Biochem Engn, Beijing 100190, Peoples R China 4.Univ Sci & Technol Beijing, Civil & Environm Engn Sch, Beijing 100083, Peoples R China
推荐引用方式 GB/T 7714	Tang, Xinhua,Li, Haoran,Wang, Weida,et al. A high-performance electrocatalytic air cathode derived from aniline and iron for use in microbial fuel cells[J]. RSC ADVANCES,2014,4(25):12789-12794.
APA	Tang, Xinhua,Li, Haoran,Wang, Weida,Du, Zhuwei,&Ng, How Yong.(2014).A high-performance electrocatalytic air cathode derived from aniline and iron for use in microbial fuel cells.RSC ADVANCES,4(25),12789-12794.
MLA	Tang, Xinhua,et al."A high-performance electrocatalytic air cathode derived from aniline and iron for use in microbial fuel cells".RSC ADVANCES 4.25(2014):12789-12794.