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Nanoscale Graphene Doped with Highly Dispersed Silver Nanoparticles: Quick Synthesis, Facile Fabrication of 3D Membrane‐Modified Electrode, and Super Performance for Electrochemical Sensing
Author(s) -
Li Yang,
Zhang Panpan,
Ouyang Zhaofei,
Zhang Mingfa,
Lin Zhoujun,
Li Jingfeng,
Su Zhiqiang,
Wei Gang
Publication year - 2016
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201504533
Subject(s) - materials science , graphene , electrode , nanotechnology , nanomaterials , nanoparticle , biosensor , electrospinning , dispersity , nanoscopic scale , membrane , electrochemistry , nanofiber , fabrication , nanocomposite , polymer , composite material , polymer chemistry , medicine , chemistry , alternative medicine , pathology , biology , genetics
The performance of graphene‐based hybrid materials greatly depends on the dispersibility of nanoscale building blocks on graphene sheets. Here, a quick green synthesis of nanoscale graphene (NG) nanosheets decorated with highly dispersed silver nanoparticles (AgNPs) is demonstrated, and then the electrospinning technique to fabricate a novel nanofibrous membrane electrode material is utilized. With this technique, the structure, mechanical stability, biochemical functionality, and other properties of the fabricated membrane electrode material can be easily controlled. It is found that the orientations of NG and the dispersity of AgNPs on the surface of NG have significant effects on the properties of the fabricated electrode. A highly sensitive H 2 O 2 biosensor is thus created based on the as‐prepared polymeric NG/AgNP 3D nanofibrous membrane‐modified electrode (MME). As a result, the fabricated biosensor has a linear detection range from 0.005 to 47 × 10 −3 m ( R = 0.9991) with a supralow detection limit of 0.56 × 10 −6 m ( S / N = 3). It is expected that this kind of nanofibrous MME has wider applications for the electrochemical detection and design of 3D functional nanomaterials in the future.

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