FeS@rGO nanocomposites as electrocatalysts for enhanced chromium removal and clean energy generation by microbial fuel cell

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 环境纳米材料实验室

	FeS@rGO nanocomposites as electrocatalysts for enhanced chromium removal and clean energy generation by microbial fuel cell
	Ali, Jafar; Wang, Lei; Waseem, Hassan; Djellabi, Ridha; Oladoja, N. A.; Pan, Gang
刊名	CHEMICAL ENGINEERING JOURNAL
	2020-03-15
卷号	384 页码:1-11
关键词	Electrochemical Microbial fuel cell Chromium Renewable energy Wastewater treatment
ISSN号	1385-8947
英文摘要	Bioelectrochemical removal of Cr(VI) and consequent renewable energy generation from wastewater is a promising technology. However, slow reaction kinetics, expensive catalysts, and hydrophobic binders remain a significant challenge for the commercialization of this emerging technology. In the present study, for the first time, graphite felt modified with iron sulfide wrapped with reduced graphene oxide (FeS@rGO) nanocomposites were used as a cathode in a dual-chamber microbial fuel cell (MFC) for concurrent Cr(VI) reduction and power generation. The MFC with FeS@rGO nanocomposites (MFC-FeS@rGO) exhibited 100% Cr(VI) removal efficiency for the concentration of 15 mg/L and also acquired a high reduction rate of 1.43 mg/L/h, which was approximately 4.6 times higher than MFC-blank. MFC-FeS@rGO delivered the maximum power density of 154 mW/m(2), and it was 328% high as that of MFC-blank (36 mW/m(2)). High cathodic coulombic efficiency for MFC-FeS@rGO (61 +/- 0.8%) indicated that the substantial amount of charge produced by exoelectrogens was mainly consumed for Cr(VI) reduction. Overall improved electrochemical performance of MFC-FeS@rGO was attributed to the high conductivity, low internal resistance, and better reaction kinetics of FeS@rGO nanocomposites. This study has demonstrated the highest reduction rate and high power production compared with previous studies, which have used very high concentrations of Cr(VI). Hence, it is expected that current findings will help to scale up the simultaneous Cr(VI) reduction and power generation from real wastewater.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/44872]
专题	生态环境研究中心_环境纳米材料实验室
推荐引用方式 GB/T 7714	Ali, Jafar,Wang, Lei,Waseem, Hassan,et al. FeS@rGO nanocomposites as electrocatalysts for enhanced chromium removal and clean energy generation by microbial fuel cell[J]. CHEMICAL ENGINEERING JOURNAL,2020,384:1-11.
APA	Ali, Jafar,Wang, Lei,Waseem, Hassan,Djellabi, Ridha,Oladoja, N. A.,&Pan, Gang.(2020).FeS@rGO nanocomposites as electrocatalysts for enhanced chromium removal and clean energy generation by microbial fuel cell.CHEMICAL ENGINEERING JOURNAL,384,1-11.
MLA	Ali, Jafar,et al."FeS@rGO nanocomposites as electrocatalysts for enhanced chromium removal and clean energy generation by microbial fuel cell".CHEMICAL ENGINEERING JOURNAL 384(2020):1-11.