Shewanella-mediated Synthesis of Reduced Graphene Oxide Film for Enhanced Extracellular Electron Transfer†

doi:10.7503/cjcu20140303

Chem. J. Chinese Universities ›› 2014, Vol. 35 ›› Issue (10): 2201.doi: 10.7503/cjcu20140303

• Physical Chemistry • Previous Articles Next Articles

Shewanella-mediated Synthesis of Reduced Graphene Oxide Film for Enhanced Extracellular Electron Transfer^†

ZHANG Kai¹, DING Chunmei¹, LIU Huan^1,^*(), ZHU Ying^1,^*(), JIANG Lei^1,²

1. Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education,School of Chemistry and Environment, Behang University, Beijing 100191, China
2. Beijing National Laboratory for Molecular Sciences, Institute of Chemistry,Chinese Academy of Sciences, Beijing 100190, China

Received:2014-04-02 Online:2014-10-10 Published:2014-09-19
Contact: LIU Huan,ZHU Ying E-mail:liuh@buaa.edu.cn;zhuying@buaa.edu.cn
Supported by:
Supported by the National Natural Science Foundation of China(No.51273008), the National High Technology Research and Development Program of China(No.2012AA030305) and the National Basic Research Program of China(No.2012CB933200)

Abstract

Abstract:

A novel route was developed to prepare reduced graphene oxide(rGO) films through reduction of graphene oxide(GO) by Shewanella loihica PV-4(S. loihica PV-4) in a single-chamber, three-electrode system. Molecular structures of GO and rGO were characterized by X-ray diffraction and Raman spectroscopy. The results demonstrated that GO film was effectively reduced to rGO by S. loihica PV-4. The obtained rGO film was used as a work electrode to improve the extracllular electron transfer(EET) of S. loihica PV-4. Compared to ITO electrode, the anode current of rGO electrode with a film thickness of 111 nm increased by 13%, and the electric quantity increased by 90%. The Shewanella-mediated reducing method may offer a simple and mild route to prepare electrode material for high performance microbial fuel cell.

Key words: Shewanella, Graphene electrode, Extracellular electron transfer

CLC Number:

O646
O613.71

TrendMD:

ZHANG Kai, DING Chunmei, LIU Huan, ZHU Ying, JIANG Lei. Shewanella-mediated Synthesis of Reduced Graphene Oxide Film for Enhanced Extracellular Electron Transfer^†[J]. Chem. J. Chinese Universities, 2014, 35(10): 2201.

Figures/Tables 7

Fig.1 Sketch map of the experimental setup used in this study

Fig.2 Optical images of GO film(A) and rGO film(B) on ITO glass

Fig.3 SEM images of the as-prepared GO film (A) Surface section; (B) cross section.

Fig.4 C1s XPS spectra of GO(A) and rGO(B)

Fig.5 XRD patterns(A) and Raman spectra(B) of GO(a) and rGO(b)

Fig.6 Schematic illustration of bacterial EET on a GO film electrode

Fig.7 Current density vs. time curves at a constant potential of 0.2 V for S. loihica PV-4 on a bare ITO electrode(a) and GO film(b) with a thickness of 111 nm(A) and on GO membranes with thickness of 218 nm(a), 401 nm(b) and 856 nm(c)(B)

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Shewanella-mediated Synthesis of Reduced Graphene Oxide Film for Enhanced Extracellular Electron Transfer^†

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