Synthesis and characterization of reduced graphene oxide/spiky nickel nanocomposite for nanoelectronic applications
authors Salimian, M; Ivanov, M; Deepak, FL; Petrovykh, DY; Bdikin, I; Ferro, M; Kholkin, A; Titus, E; Goncalves, G
nationality International
journal JOURNAL OF MATERIALS CHEMISTRY C
keywords ELECTROCHEMICAL HYDROGEN STORAGE; HYDRAZINE-REDUCTION; ROOM-TEMPERATURE; OXIDE; NANOPARTICLES; HYBRID; ROUTE; COMPOSITES; CR(VI); COBALT
abstract The surface modification of graphene oxide (GO) sheets with Ni nanoparticles has been a subject of intense research in order to develop new preeminent materials with increased performance for different application areas. In this work, we develop a new hydrothermal one-step method for the simple and controllable synthesis of reduced GO/nickel (GO/Ni) nanocomposites. Different reaction parameters have been investigated in order to control the synthetic process: reaction temperature, concentration of the nickel precursor and reducing agent. It was observed that the critical parameter for effective control of nickel particle size, morphology, crystalline structure and distribution at the GO surface during the reaction process was the concentration of hydrazine. The results obtained showed that control of hydrazine concentration allows obtaining crystalline metallic Ni nanoparticles, from spherical to spiky morphologies. For nanocomposites with spiky Ni nanoparticle, the reaction time allows controlling the growth of the nanothorn. The electrical properties of reduced graphene nickel nanocomposites containing spiky nickel particles showed a large resistive switching, which is essentially due to the switchable diode effect that can be used as a built-in part of graphene-based embedded electronics.
publisher ROYAL SOC CHEMISTRY
issn 2050-7526
year published 2015
volume 3
issue 43
beginning page 11516
ending page 11523
digital object identifier (doi) 10.1039/c5tc02619a
web of science category Materials Science, Multidisciplinary; Physics, Applied
subject category Materials Science; Physics
unique article identifier WOS:000364214800030
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journal analysis (jcr 2019):
journal impact factor 7.059
5 year journal impact factor 6.404
category normalized journal impact factor percentile 85.94
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