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Antibacterial Performance of a Mussel-Inspired Polydopamine-Treated Ag/Graphene Nanocomposite Material.
Liao, Jianming; He, Shuaiming; Guo, Shasha; Luan, Pengcheng; Mo, Lihuan; Li, Jun.
Afiliación
  • Liao J; State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510641, China. feliaojm_1992@mail.scut.edu.cn.
  • He S; State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510641, China. he.shuaiming@gmail.com.
  • Guo S; State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510641, China. feshasha.guo@mail.scut.edu.cn.
  • Luan P; State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510641, China. luanpc1991@gmail.com.
  • Mo L; State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510641, China. lhmo@scut.edu.cn.
  • Li J; State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510641, China. ppjunli@scut.edu.cn.
Materials (Basel) ; 12(20)2019 Oct 15.
Article en En | MEDLINE | ID: mdl-31618859
ABSTRACT
Graphene-based nanocomposites have attracted tremendous attention in recent years. In this study, a facile yet effective approach was developed to synthesize reduced graphene oxide and an Ag-graphene nanocomposite. The basic strategy involved in the preparation of reduced graphene oxide includes reducing graphene oxide with dopamine, followed by in situ syntheses of the Ag-PDA-reducing graphene oxide (RGO) nanocomposite through adding AgNO3 solution and a small amount of dopamine. The nanocomposite was characterized by transmission electron microscopy (TEM), atomic force microscopy (AFM), X-ray diffraction (XRD), FTIR spectra, Raman spectra, ultraviolet-visible (UV-vis), and X-ray photoelectron spectroscopy (XPS), results indicated that a uniform PDA film is formed on the surface of the GO and GO is successfully reduced. Besides, the in situ synthesized Ag nanoparticles (AgNPs) were evenly distributed on the RGO surface. To investigate antibacterial properties Ag-PDA-RGO, different dosages were selected for evaluating the antibacterial activity against Gram-positive bacteria Staphylococcus aureus and Gram-negative bacteria Escherichia coli. The Ag-PDA-RGO nanocomposites displayed excellent antibacterial property. The antibacterial ratio reached 99.9% against S. aureus and 90.9% against E. coli when the dosage of 100 mg/L Ag-PDA-RGO nanocomposites was 100 µL. The novel Ag-PDA-RGO nanocomposite prepared by a facile yet effective, environmentally friendly, and low-cost method holds great promise in a wide range of modern biomedical applications.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Materials (Basel) Año: 2019 Tipo del documento: Article País de afiliación: China

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Materials (Basel) Año: 2019 Tipo del documento: Article País de afiliación: China