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A high-performance electrocatalytic air cathode derived from aniline and iron for use in microbial fuel cells
Alternative TitleRSC Adv.
Tang, Xinhua1,2; Li, Haoran3; Wang, Weida4; Du, Zhuwei3; Ng, How Yong1
2014
Source PublicationRSC ADVANCES
ISSN2046-2069
Volume4Issue:25Pages:12789-12794
AbstractIn 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.; 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.
KeywordOxygen Reduction Reaction Waste-water Treatment Electron-transfer Catalysts Carbon Electricity Deposition Graphite Bacteria Density
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1039/c3ra47931e
URL查看原文
Indexed BySCI
Language英语
WOS KeywordOXYGEN REDUCTION REACTION ; WASTE-WATER TREATMENT ; ELECTRON-TRANSFER ; CATALYSTS ; CARBON ; ELECTRICITY ; DEPOSITION ; GRAPHITE ; BACTERIA ; DENSITY
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
WOS IDWOS:000332485000021
Citation statistics
Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/8115
Collection研究所(批量导入)
Affiliation1.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
Recommended Citation
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.
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