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

被引：0
作者：
Chen Zhao
Bing Deng
Guanchu Chen
Bo Lei
Hong Hua
Hailin Peng
Zhimin Yan
机构：
[1] Peking University School of Stomatology,Department of Oral Medicine
[2] Peking University,Center for Nanochemistry, Beijing Science and Engineering Center for Nanocarbons, Beijing National Laboratory for Molecular Sciences (BNLMS), College of Chemistry and Molecular Engineering
来源：
Nano Research | 2016年 / 9卷
关键词：
graphene; silver nanowires; antimicrobial; chemical vapor deposition (CVD); electrochemical corrosion;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
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.
引用
收藏
页码：963 / 973
页数：10
相关论文
共 346 条
  • [1] Irwansyah I.(2015)Gram-positive antimicrobial activity of amino acid-based hydrogels Adv. Mater. 27 648-654
  • [2] Li Y. Q.(2014)Brush-like polycarbonates containing dopamine, cations, and PEG providing a broadspectrum, antibacterial, and antifouling surface via one-step coating Adv. Mater. 26 7346-7351
  • [3] Shi W. X.(2007)Gentamicin-loaded bioresorbable films for prevention of bacterial infections associated with orthopedic implants J. Biomed. Mater. Res. A 83 10-19
  • [4] Qi D. P.(2011)Recent advances in materials for extended-release antibiotic delivery system J. Antibiot. 64 625-634
  • [5] Leow W. R.(2009)Antibiotics for emerging pathogens Science 325 1089-1093
  • [6] Tang M. B. Y.(2011)“Nanoantibiotics”: A new paradigm for treating infectious diseases using nanomaterials in the antibiotics resistant era J. Controlled Release 156 128-145
  • [7] Li S. Z.(2011)Multifunctional cationic poly(p-phenylene vinylene) polyelectrolytes for selective recognition, imaging, and killing of bacteria over mammalian cells Adv. Mater. 23 4805-4810
  • [8] Chen X. D.(2005)The bactericidal effect of silver nanoparticles Nanotechnology 16 2346-2353
  • [9] Yang C.(2008)Effect of surfactants and polymers on stability and antibacterial activity of silver nanoparticles (NPs) J. Phys. Chem. C 112 5825-5834
  • [10] Ding X.(2007)Does the antibacterial activity of silver nanoparticles depend on the shape of the nanoparticle? A study of the Gram-negative bacterium Escherichia coli Appl. Environ. Microbiol. 73 1712-1720
12345678910