Eco-friendly decoration of graphene oxide with biogenic silver nanoparticles: antibacterial and antibiofilm activity

被引：67

作者：

de Faria, Andreia Fonseca ^{[1
]}

Mazarin de Moraes, Ana Carolina ^{[1
]}

Marcato, Priscyla Daniely ^{[1
,2
]}

Teodoro Martinez, Diego Stefani ^{[1
]}

Duran, Nelson ^{[1
,3
]}

Souza Filho, Antonio Gomes ^{[4
]}

Brandelli, Adriano ^{[5
]}

Alves, Oswaldo Luiz ^{[1
]}

机构：

[1] Univ Estadual Campinas, Inst Quim, BR-13083970 Sao Paulo, Brazil

[2] Univ Sao Paulo, Sch Pharmaceut Sci Ribeirao Preto, Sao Paulo, Brazil

[3] Univ Fed ABC, Ctr Nat & Human Sci, Sao Paulo, Brazil

[4] Univ Fed Ceara, Dept Fis, BR-60455900 Fortaleza, Ceara, Brazil

[5] Univ Fed Rio Grande do Sul, Inst Ciencia & Tecnol Alimentos, BR-91501970 Porto Alegre, RS, Brazil

来源：

JOURNAL OF NANOPARTICLE RESEARCH | 2014年 / 16卷 / 02期

基金：

巴西圣保罗研究基金会;

关键词：

Graphene oxide; Biogenic silver nanoparticles; Fusarium oxysporum; Antibacterial activity; Salmonella typhimurium; Microbiology; EXTRACELLULAR BIOSYNTHESIS; BIOLOGICAL SYNTHESIS; METAL NANOPARTICLES; GREEN SYNTHESIS; MECHANISMS; BACTERIA;

D O I：

10.1007/s11051-013-2110-7

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

This work reports on preparation, characterization, and antibacterial activity of graphene oxide (GO) decorated with biogenic silver nanoparticles (Bio-AgNPs) produced by the fungus Fusarium oxysporum. This nanocomposite (Bio-GOAg) was prepared by an ex situ process through the physical mixture of a GO dispersion with the previously prepared Bio-AgNPs. The adsorption of the Bio-AgNPs onto the GO sheets was confirmed by transmission electron microscopy. The average size of the Bio-AgNPs anchored onto the GO surface was found to be 3.5 nm. The antibacterial activity of the Bio-GOAg nanocomposite against Gram-positive and Gram-negative microorganisms was investigated and a very promising result was found for the Gram-negative strains. In addition, the Bio-GOAg nanocomposite displayed a very strong biocidal activity against the Salmonella typhimurium strain at a concentration of 2.0 mu g/mL. The antibiofilm activity toward S. typhimurium adhered on stainless steel surfaces was also investigated. The results showed 100 % inhibition of the adhered cells after exposure to the Bio-GOAg nanocomposite for 1 h.

引用

页数：16

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