Sustainable Energy Recovery in Wastewater Treatment by Microbial Fuel Cells: Stable Power Generation with Nitrogen-doped Graphene Cathode

doi:10.1021/es4032216

CORC > 重庆绿色智能技术研究院 > 中国科学院重庆绿色智能技术研究院 > 水污染过程与治理研究中心

	Sustainable Energy Recovery in Wastewater Treatment by Microbial Fuel Cells: Stable Power Generation with Nitrogen-doped Graphene Cathode
	Liu, Yuan 1,2; Liu, Hong1,2 ; Wang, Chuan 1,2; Hou, Shuang-Xia 1,2; Yang, Nuan 1,2
刊名	ENVIRONMENTAL SCIENCE & TECHNOLOGY
	2013-12-03
卷号	47 期号:23 页码:13889-13895
ISSN号	0013-936X
DOI	10.1021/es4032216
通讯作者	Liu, H (reprint author), Chinese Acad Sci, Key Lab Reservoir Aquat Environm, Chongqing 400714, Peoples R China.
英文摘要	Microbial fuel cells (MFCs) recover energy sustainably in wastewater treatment. Performance of non-noble cathode catalysts with low cost in neutral medium is vital for stable power generation. Nitrogen-doped graphene (NG) as cathode catalyst was observed to exhibit high and durable activity at buffered pH 7.0 during electrochemical measurements and in MFCs with respect to Pt/C counterpart. Electrochemical measurements showed that the oxygen reduction reaction (ORR) on NG possessed sustained activity close to the state-of-art Pt/C in terms of onset potential and electron transfer number. NG-MFCs displayed maximum voltage output of 650 mV and maximum power density of 776 +/- 12 mW m(-2), larger than 610 mV and 750 +/- 19 mW m(-2) of Pt/C-MFCs, respectively. Furthermore, long-time test lasted over 90 days, during which the maximum power density of NG-MFCs declined by 7.6%, with stability comparable to Pt/C-MFCs. Structure characterization of NG implied that the relatively concentrated acidic oxygen-containing groups improved such long-time stability by repelling the protons due to the same electrostatic force, and thus the C-N active centers for ORR were left undestroyed. These findings demonstrated the competitive advantage of NG to advance the application of MFCs for recovering biomass energy in treatment of wastewater with neutral pH.
资助项目	Natural Science Foundation of China[21077071] ; Natural Science Foundation of China[51209539] ; Natural Science Foundation of China[51378494] ; Chongqing Science & Technology Commission[cstc2012jjA20004] ; Chongqing Science & Technology Commission[cstc2011ggC20013]
WOS研究方向	Engineering ; Environmental Sciences & Ecology
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000327999400084
内容类型	期刊论文
源URL	[http://119.78.100.138/handle/2HOD01W0/572]
专题	水污染过程与治理研究中心
通讯作者	Liu, Hong
作者单位	1.Chinese Acad Sci, Key Lab Reservoir Aquat Environm, Chongqing 400714, Peoples R China 2.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China
推荐引用方式 GB/T 7714	Liu, Yuan,Liu, Hong,Wang, Chuan,et al. Sustainable Energy Recovery in Wastewater Treatment by Microbial Fuel Cells: Stable Power Generation with Nitrogen-doped Graphene Cathode[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2013,47(23):13889-13895.
APA	Liu, Yuan,Liu, Hong,Wang, Chuan,Hou, Shuang-Xia,&Yang, Nuan.(2013).Sustainable Energy Recovery in Wastewater Treatment by Microbial Fuel Cells: Stable Power Generation with Nitrogen-doped Graphene Cathode.ENVIRONMENTAL SCIENCE & TECHNOLOGY,47(23),13889-13895.
MLA	Liu, Yuan,et al."Sustainable Energy Recovery in Wastewater Treatment by Microbial Fuel Cells: Stable Power Generation with Nitrogen-doped Graphene Cathode".ENVIRONMENTAL SCIENCE & TECHNOLOGY 47.23(2013):13889-13895.