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Spontaneous modification of graphite anode by anthraquinone-2-sulfonic acid for microbial fuel cells
Alternative TitleBioresour. Technol.
Tang, Xinhua1,2; Li, Haoran3; Du, Zhuwei3; Ng, How Yong1
2014-07-01
Source PublicationBIORESOURCE TECHNOLOGY
ISSN0960-8524
Volume164Issue:1Pages:184-188
AbstractIn 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.; 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.
KeywordAnthraquinone-2-sulfonic Acid Diazonium Cations Anodic Electron Transfer Graphite Anode Microbial Fuel Cells
SubtypeArticle
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine ; Technology
DOI10.1016/j.biortech.2014.05.010
URL查看原文
Indexed BySCI
Language英语
WOS KeywordWASTE-WATER ; ELECTRON-TRANSFER ; NEUTRAL RED ; HARVESTING ENERGY ; KINETIC ACTIVITY ; CARBON SURFACE ; ELECTRICITY ; REDUCTION ; BACTERIA ; GENERATION
WOS Research AreaAgriculture ; Biotechnology & Applied Microbiology ; Energy & Fuels
WOS SubjectAgricultural Engineering ; Biotechnology & Applied Microbiology ; Energy & Fuels
WOS IDWOS:000338710500027
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Cited Times:15[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/10966
Collection研究所(批量导入)
Affiliation1.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
Recommended Citation
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.
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