title: Enhanced antimicrobial activities of silver-nanoparticle-decorated reduced graphene nanocomposites against oral pathogens.
abstract: As a means of capitalizing on the synergistic properties between reduced graphene nanosheets (R-GNs) and silver nanoparticles (AgNPs), an efficient and convenient chemical reduction method was used to prepare silver-nanoparticle-decorated reduced graphene nanocomposites (R-GNs/Ag). The products were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), and Raman spectroscopy, which confirmed the loading of well-dispersed silver nanoparticles on reduced graphene sheets. Their antimicrobial activities against oral pathogens such as Candida albicans, Lactobacillus acidophilus, Streptococcus mutans, and Aggregatibacter actinomycetemcomitans were investigated by MIC determination, the counting of colony-forming units (CFU), agar diffusion tests, and growth curve observation. Compared with pure R-GNs and AgNPs, R-GNs/Ag composites exhibited enhanced antimicrobial properties owing to highly dispersed AgNPs on R-GNs.
authors.affiliation: Guanghua School of Stomatology, Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou 510055, PR China.
authors.forename: Jian-Min
authors.initials: JM
authors.lastname: Peng
authors.affiliation: Guanghua School of Stomatology, Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou 510055, PR China.
authors.forename: Jia-Cheng
authors.initials: JC
authors.lastname: Lin
authors.affiliation: Guanghua School of Stomatology, Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou 510055, PR China.
authors.forename: Zhuo-Yu
authors.initials: ZY
authors.lastname: Chen
authors.affiliation: Guanghua School of Stomatology, Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou 510055, PR China.
authors.forename: Meng-Chao
authors.initials: MC
authors.lastname: Wei
authors.affiliation: School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, PR China.
authors.forename: Yuan-Xiang
authors.initials: YX
authors.lastname: Fu
authors.affiliation: School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, PR China.
authors.forename: Shu-Shen
authors.initials: SS
authors.lastname: Lu
authors.affiliation: Guanghua School of Stomatology, Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou 510055, PR China. Electronic address: yudsh@mail.sysu.edu.cn.
authors.forename: Dong-Sheng
authors.initials: DS
authors.lastname: Yu
authors.affiliation: Guanghua School of Stomatology, Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou 510055, PR China. Electronic address: zhaowei3@mail.sysu.edu.cn.
authors.forename: Wei
authors.initials: W
authors.lastname: Zhao
mesh_terms: D000890:Anti-Infective Agents / Q000737:chemistry / Q000494:pharmacology; D001419:Bacteria / Q000254:growth & development*; D002176:Candida albicans / Q000254:growth & development*; D006108:Graphite / Q000737:chemistry / Q000494:pharmacology; D053768:Metal Nanoparticles / Q000737:chemistry*; D009055:Mouth / Q000382:microbiology; D053761:Nanocomposites / Q000737:chemistry*; D012834:Silver / Q000737:chemistry / Q000494:pharmacology
chemical_list: D000890:Anti-Infective Agents; D012834:Silver; D006108:Graphite
keywords: Antimicrobial activities; Oral pathogens; Reduced graphene nanosheets; Silver nanoparticles