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Nano Research 2016, 9(4): 963-973 https://doi.org/10.1007/s12274-016-0984-2
Research Article | Issue | Published: 04 March 2016

Large-area chemical vapor deposition-grown monolayer graphene-wrapped silver nanowires for broad-spectrum and robust antimicrobial coating

Show Author's Information Chen Zhao1,§,  Bing Deng2,§,  Guanchu Chen2,  Bo Lei2,  Hong Hua1,  Hailin Peng2( ),  Zhimin Yan1( )
Department of Oral MedicinePeking University School of StomatologyBeijing100081China
Center for NanochemistryBeijing Science and Engineering Center for NanocarbonsBeijing National Laboratory for Molecular Sciences (BNLMS)College of Chemistry and Molecular EngineeringPeking UniversityBeijing100871China

§These authors contributed equally to this work.

Keywords:
graphene, chemical vapor deposition (CVD), silver nanowires, antimicrobial, electrochemical corrosion
Cite this article:
Zhao C, Deng B, Chen G, et al. Large-area chemical vapor deposition-grown monolayer graphene-wrapped silver nanowires for broad-spectrum and robust antimicrobial coating. Nano Research, 2016, 9(4): 963-973. https://doi.org/10.1007/s12274-016-0984-2
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Abstract Full text Electronic supplementary material About this article

New types of antimicrobial systems are urgently needed owing to the emergence of pathogenic microbial strains that gain resistance to antibiotics commonly used in daily life and medical care. In this study, we developed for the first time a broad-spectrum and robust antimicrobial thin film coating based on large-area chemical vapor deposition (CVD)-grown graphene-wrapped silver nanowires (AgNWs). The antimicrobial graphene/AgNW hybrid coating can be applied on commercial flexible transparent ethylene vinyl acetate/ polyethylene terephthalate (EVA/PET) plastic films by a full roll-to-roll process. The graphene/AgNW hybrid coating showed broad-spectrum antimicrobial activity against Gram-negative (Escherichia coli) and Gram-positive bacteria (Staphylococcus aureus), and fungi (Candida albicans). This effect was attributed to a weaker microbial attachment to the ultra-smooth graphene film and the sterilization capacity of Ag+, which is sustainably released from the AgNWs and presumably enhanced by the electrochemical corrosion of AgNWs. Moreover, the robust antimicrobial activity of the graphene/AgNW coating was reinforced by AgNW encapsulation by graphene. Furthermore, the antimicrobial efficiency could be enhanced to ~100% by water electrolysis by using the conductive graphene/AgNW coating as a cathode. We developed a transparent and flexible antimicrobial cover made of graphene/AgNW/EVA/PET and an antimicrobial denture coated by graphene/ AgNW, to show the potential applications of the antimicrobial materials.


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Abstract
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Electronic supplementary material
About this article

Large-area chemical vapor deposition-grown monolayer graphene-wrapped silver nanowires for broad-spectrum and robust antimicrobial coating

Show Author's information Chen Zhao1,§, Bing Deng2,§, Guanchu Chen2, Bo Lei2, Hong Hua1, Hailin Peng2( ), Zhimin Yan1( )
Department of Oral MedicinePeking University School of StomatologyBeijing100081China
Center for NanochemistryBeijing Science and Engineering Center for NanocarbonsBeijing National Laboratory for Molecular Sciences (BNLMS)College of Chemistry and Molecular EngineeringPeking UniversityBeijing100871China

§These authors contributed equally to this work.

Abstract

New types of antimicrobial systems are urgently needed owing to the emergence of pathogenic microbial strains that gain resistance to antibiotics commonly used in daily life and medical care. In this study, we developed for the first time a broad-spectrum and robust antimicrobial thin film coating based on large-area chemical vapor deposition (CVD)-grown graphene-wrapped silver nanowires (AgNWs). The antimicrobial graphene/AgNW hybrid coating can be applied on commercial flexible transparent ethylene vinyl acetate/ polyethylene terephthalate (EVA/PET) plastic films by a full roll-to-roll process. The graphene/AgNW hybrid coating showed broad-spectrum antimicrobial activity against Gram-negative (Escherichia coli) and Gram-positive bacteria (Staphylococcus aureus), and fungi (Candida albicans). This effect was attributed to a weaker microbial attachment to the ultra-smooth graphene film and the sterilization capacity of Ag+, which is sustainably released from the AgNWs and presumably enhanced by the electrochemical corrosion of AgNWs. Moreover, the robust antimicrobial activity of the graphene/AgNW coating was reinforced by AgNW encapsulation by graphene. Furthermore, the antimicrobial efficiency could be enhanced to ~100% by water electrolysis by using the conductive graphene/AgNW coating as a cathode. We developed a transparent and flexible antimicrobial cover made of graphene/AgNW/EVA/PET and an antimicrobial denture coated by graphene/ AgNW, to show the potential applications of the antimicrobial materials.

Keywords: graphene, chemical vapor deposition (CVD), silver nanowires, antimicrobial, electrochemical corrosion

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Publication history
Copyright
Acknowledgements

Publication history

Received: 14 November 2015
Revised: 09 December 2015
Accepted: 18 December 2015
Published: 04 March 2016
Issue date: April 2016

Copyright

© Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2016

Acknowledgements

Acknowledgements

This work was financially supported by the National Natural Science Foundation of China (Nos. 81000441, 21222303, and 21173004), the National Basic Research Program of China (Nos. 2014CB932500), and National Program for Support of Top-Notch Young Professionals.

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