Spontaneous modification of graphite anode by anthraquinone-2-sulfonic acid for microbial fuel cells

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	Spontaneous modification of graphite anode by anthraquinone-2-sulfonic acid for microbial fuel cells
	Tang, Xinhua 1,2; Li, Haoran 3; Du, Zhuwei 3; Ng, How Yong 1
刊名	BIORESOURCE TECHNOLOGY
	2014-07-01
卷号	164 期号:1 页码:184-188
关键词	Anthraquinone-2-sulfonic acid Diazonium cations Anodic electron transfer Graphite anode Microbial fuel cells
ISSN号	0960-8524
其他题名	Bioresour. Technol.
中文摘要	In this study, anthraquinone-2-sulfonic acid (AQS), an electron transfer mediator, was immobilized onto graphite felt surface via spontaneous reduction of the in situ generated AQS diazonium cations. Cyclic voltammetry (CV) and energy dispersive spectrometry (EDS) characterizations of AQS modified graphite demonstrated that AQS was covalently grafted onto the graphite surface. The modified graphite, with a surface AQS concentration of 5.37 +/- 1.15 x 10(-9) mol/cm(2), exhibited good electrochemical activity and high stability. The midpoint potential of the modified graphite was about -0.248 V (vs. normal hydrogen electrode, NHE), indicating that electrons could be easily transferred from NADH in bacteria to the electrode. AQS modified anode in MFCs increased the maximum power density from 967 +/- 33 mW/m(2) to 1872 +/- 42 mW/m(2). These results demonstrated that covalently modified AQS functioned as an electron transfer mediator to facilitate extracellular electron transfer from bacteria to electrode and significantly enhanced the power production in MFCs. (C) 2014 Elsevier Ltd. All rights reserved.
英文摘要	In this study, anthraquinone-2-sulfonic acid (AQS), an electron transfer mediator, was immobilized onto graphite felt surface via spontaneous reduction of the in situ generated AQS diazonium cations. Cyclic voltammetry (CV) and energy dispersive spectrometry (EDS) characterizations of AQS modified graphite demonstrated that AQS was covalently grafted onto the graphite surface. The modified graphite, with a surface AQS concentration of 5.37 +/- 1.15 x 10(-9) mol/cm(2), exhibited good electrochemical activity and high stability. The midpoint potential of the modified graphite was about -0.248 V (vs. normal hydrogen electrode, NHE), indicating that electrons could be easily transferred from NADH in bacteria to the electrode. AQS modified anode in MFCs increased the maximum power density from 967 +/- 33 mW/m(2) to 1872 +/- 42 mW/m(2). These results demonstrated that covalently modified AQS functioned as an electron transfer mediator to facilitate extracellular electron transfer from bacteria to electrode and significantly enhanced the power production in MFCs. (C) 2014 Elsevier Ltd. All rights reserved.
WOS标题词	Science & Technology ; Life Sciences & Biomedicine ; Technology
类目[WOS]	Agricultural Engineering ; Biotechnology & Applied Microbiology ; Energy & Fuels
研究领域[WOS]	Agriculture ; Biotechnology & Applied Microbiology ; Energy & Fuels
关键词[WOS]	WASTE-WATER ; ELECTRON-TRANSFER ; NEUTRAL RED ; HARVESTING ENERGY ; KINETIC ACTIVITY ; CARBON SURFACE ; ELECTRICITY ; REDUCTION ; BACTERIA ; GENERATION
收录类别	SCI
原文出处	://WOS:000338710500027
语种	英语
WOS记录号	WOS:000338710500027
公开日期	2014-08-28
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.ipe.ac.cn/handle/122111/10966]
专题	过程工程研究所_研究所（批量导入）
作者单位	1.Natl Univ Singapore, Dept Civil & Environm Engn, Ctr Water Res, 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
推荐引用方式 GB/T 7714	Tang, Xinhua,Li, Haoran,Du, Zhuwei,et al. Spontaneous modification of graphite anode by anthraquinone-2-sulfonic acid for microbial fuel cells[J]. BIORESOURCE TECHNOLOGY,2014,164(1):184-188.
APA	Tang, Xinhua,Li, Haoran,Du, Zhuwei,&Ng, How Yong.(2014).Spontaneous modification of graphite anode by anthraquinone-2-sulfonic acid for microbial fuel cells.BIORESOURCE TECHNOLOGY,164(1),184-188.
MLA	Tang, Xinhua,et al."Spontaneous modification of graphite anode by anthraquinone-2-sulfonic acid for microbial fuel cells".BIORESOURCE TECHNOLOGY 164.1(2014):184-188.