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Graphene Oxide/Silver Nanohybrid as Multi-functional Material for Highly Efficient Bacterial Disinfection and Detection of Organic Dye

Journal of electronic materials, 2016-10, Vol.45 (10), p.5321-5333 [Peer Reviewed Journal]

The Minerals, Metals & Materials Society 2016 ;ISSN: 0361-5235 ;EISSN: 1543-186X ;DOI: 10.1007/s11664-016-4734-8 ;CODEN: JECMA5

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  • Title:
    Graphene Oxide/Silver Nanohybrid as Multi-functional Material for Highly Efficient Bacterial Disinfection and Detection of Organic Dye
  • Author: Tam, Le Thi ; Dinh, Ngo Xuan ; Van Cuong, Nguyen ; Van Quy, Nguyen ; Huy, Tran Quang ; Ngo, Duc-The ; Mølhave, Kristian ; Le, Anh-Tuan
  • Subjects: Antimicrobial agents ; Carbon ; Characterization and Evaluation of Materials ; Chemistry and Materials Science ; Electronics and Microelectronics ; Instrumentation ; Materials Science ; Nanoparticles ; Optical and Electronic Materials ; Silver ; Solid State Physics
  • Is Part Of: Journal of electronic materials, 2016-10, Vol.45 (10), p.5321-5333
  • Description: In this work, a multi-functional hybrid system consisting of graphene oxide and silver nanoparticles (GO-Ag NPs) was successfully synthesized by using a two-step chemical process. We firstly demonstrated noticeable bactericidal ability of the GO-Ag hybrid system. We provide more chemo-physical evidence explaining the antibacterial behavior of GO-Ag nanohybrid against Gram-negative Escherichia Coli and Gram-positive Staphylococcus aureus in light of ultrastructural damage analyses and Ag 1+ ions release rate onto the cells/medium. A further understanding of the mode of antimicrobial action is very important for designing and developing advanced antimicrobial systems. Secondly, we have also demonstrated that the GO-Ag nanohybrid material could be used as a potential surface enhanced Raman scattering (SERS) substrate to detect and quantify organic dyes, e.g., methylene blue (MB), in aqueous media. Our findings revealed that the GO-Ag hybrid system showed better SERS performance of MB detection than that of pure Ag-NPs. MB could be detected at a concentration as low as 1 ppm. The GO-Ag-based SERS platform can be effectively used to detect trace concentrations of various types of organic dyes in aqueous media. With the aforementioned properties, the GO-Ag hybrid system is found to be very promising as a multi-functional material for advanced biomedicine and environmental monitoring applications.
  • Publisher: New York: Springer US
  • Language: English
  • Identifier: ISSN: 0361-5235
    EISSN: 1543-186X
    DOI: 10.1007/s11664-016-4734-8
    CODEN: JECMA5
  • Source: ProQuest Central
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