Passivation of microbial corrosion using a graphene coating

被引：118

作者：

Krishnamurthy, A. ^{[1
]}

Gadhamshetty, V. ^{[1
]}

Mukherjee, R. ^{[1
]}

Chen, Z. ^{[2
]}

Ren, W. ^{[2
]}

Cheng, H-M. ^{[2
]}

Koratkar, N. ^{[1
]}

机构：

[1] Rensselaer Polytech Inst, Troy, NY 12180 USA

[2] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China

来源：

CARBON | 2013年 / 56卷

关键词：

D O I：

10.1016/j.carbon.2012.12.060

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Microbial corrosion limits the use of metallic structures in a variety of technological processes and applications. Here, we report the first demonstration of graphene as a passive layer that retards microbially-induced galvanic corrosion (MIC) of metals for extended periods of time (similar to 2700 h). The effectiveness of the MIC-resistant graphene coating was evaluated under realistic operating conditions by testing baseline Ni foams and graphene-coated Ni foams as anodes in a microbial fuel cell. The rates of Ni dissolution in the graphene-coated Ni anode were at least an order of magnitude lower than the baseline (uncoated) Ni electrode. Electrochemical impedance spectroscopy characterization revealed that the MIC of Ni was impeded by over 40-fold when coated with graphene. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：45 / 49

页数：5

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