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Superiority of Graphene over Polymer Coatings for Prevention of Microbially Induced Corrosion
Krishnamurthy, Ajay; Gadhamshetty, Venkataramana; Mukherjee, Rahul; Natarajan, Bharath; Eksik, Osman; Shojaee, S. Ali; Lucca, Don A.; Ren, Wencai; Cheng, Hui-Ming; Koratkar, Nikhil; Venkata.Gadhamshetty@sdsmt.edu; koratn@rpi.edu
2015
发表期刊SCIENTIFIC REPORTS
ISSN2045-2322
卷号5页码:-
摘要Prevention of microbially induced corrosion (MIC) is of great significance in many environmental applications. Here, we report the use of an ultra-thin, graphene skin (Gr) as a superior anti-MIC coating over two commercial polymeric coatings, Parylene-C (PA) and Polyurethane (PU). We find that Nickel (Ni) dissolution in a corrosion cell with Gr-coated Ni is an order of magnitude lower than that of PA and PU coated electrodes. Electrochemical analysis reveals that the Gr coating offers similar to 10 and similar to 100 fold improvement in MIC resistance over PU and PA coatings respectively. This finding is remarkable considering that the Gr coating (1-2 nm) is similar to 25 and similar to 4000 times thinner than the PA (40-50 nm), and PU coatings (20-80 mu m), respectively. Conventional polymer coatings are either non-conformal when deposited or degrade under the action of microbial processes, while the electro-chemically inert graphene coating is both resistant to microbial attack and is extremely conformal and defect-free. Finally, we provide a brief discussion regarding the effectiveness of as-grown vs. transferred graphene films for anti-MIC applications. While the as-grown graphene films are devoid of major defects, wet transfer of graphene is shown to introduce large scale defects that make it less suitable for the current application.
部门归属[krishnamurthy, ajay ; mukherjee, rahul ; eksik, osman ; koratkar, nikhil] rensselaer polytech inst, mech aerosp & nucl engn, troy, ny 12180 usa ; [gadhamshetty, venkataramana] south dakota sch mines & technol, civil & environm engn, rapid city, sd 57701 usa ; [natarajan, bharath ; koratkar, nikhil] rensselaer polytech inst, dept mat sci & engn, troy, ny 12180 usa ; [shojaee, s. ali ; lucca, don a.] oklahoma state univ, mech & aerosp engn, stillwater, ok 74078 usa ; [ren, wencai ; cheng, hui-ming] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china
资助者USA National Science Foundation [CMMI 1234641, CMMI 1435783, 1454102]; National Science Foundation of China [50921004, 50872136, 50972147]; Chinese Academy of Sciences [KJCX2-YW-231]; NASA [NNX13AB25A]; Electric Power Research Institute
收录类别sci
语种英语
文献类型期刊论文
条目标识符http://ir.imr.ac.cn/handle/321006/75151
专题中国科学院金属研究所
通讯作者Venkata.Gadhamshetty@sdsmt.edu; koratn@rpi.edu
推荐引用方式
GB/T 7714
Krishnamurthy, Ajay,Gadhamshetty, Venkataramana,Mukherjee, Rahul,et al. Superiority of Graphene over Polymer Coatings for Prevention of Microbially Induced Corrosion[J]. SCIENTIFIC REPORTS,2015,5:-.
APA Krishnamurthy, Ajay.,Gadhamshetty, Venkataramana.,Mukherjee, Rahul.,Natarajan, Bharath.,Eksik, Osman.,...&koratn@rpi.edu.(2015).Superiority of Graphene over Polymer Coatings for Prevention of Microbially Induced Corrosion.SCIENTIFIC REPORTS,5,-.
MLA Krishnamurthy, Ajay,et al."Superiority of Graphene over Polymer Coatings for Prevention of Microbially Induced Corrosion".SCIENTIFIC REPORTS 5(2015):-.
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