Synthesis of silver nanoparticles in an aqueous suspension of graphene oxide sheets and its antimicrobial activity
Synthesis of silver nanoparticles in an aqueous suspension of graphene oxide sheets and its antimicrobial activity
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DOI：
10.1016/j.colsurfb.2010.10.033
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发表时间：
2011-03-01
影响因子：
5.8
通讯作者：
Sengupta, Pinaki
中科院分区：
文献类型：
--
作者：
Das, Manash R.;Sarma, Rupak K.;Sengupta, Pinaki
展示了一种在氧化石墨烯（GrO）悬浮液中通过化学还原硝酸银（AgNO₃）来合成银（Ag）纳米粒子的基于溶液的方法。X射线衍射和透射电子显微镜表明，尺寸范围在5 - 25纳米的银纳米粒子修饰在氧化石墨烯片上。银纳米粒子的大小和形状取决于硝酸银溶液的浓度。研究了这种杂化材料对革兰氏阴性菌大肠杆菌和铜绿假单胞菌的抗菌活性。在不同条件下，在添加了银纳米粒子 - 氧化石墨烯悬浮液的营养肉汤中监测细菌生长动力学。观察到铜绿假单胞菌对银纳米粒子 - 氧化石墨烯悬浮液相对更敏感。（C）2010爱思唯尔公司。保留所有权利。
A solution-based approach to the synthesis of silver (Ag) nanoparticles by chemical reduction of AgNO3 in a graphene oxide (GrO) suspension is demonstrated. X-ray diffraction and transmission electron microscopy indicate that the Ag nanoparticles, of size range 5-25 nm, were decorated on the GrO sheets. The size and shape of the Ag nanoparticles are dependent on the concentration of the AgNO3 solution. Antimicrobial activity of such hybrids materials is investigated against the Gram negative bacteria Escherichia coli and Pseudomonous aeruginosa. The bacterial growth kinetics was monitored in nutrient broth supplemented with the Ag nanoparticle-GrO suspension at different conditions. It was observed that P. aeruginosa is comparatively more sensitive to the Ag nanoparticle-GrO suspension. (C) 2010 Elsevier B.V. All rights reserved.