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http://hdl.handle.net/10773/20980
Título: | Synthesis and characterization of reduced graphene oxide/spiky nickel nanocomposite for nanoelectronic applications |
Autor: | Salimian, Maryam Ivanov, Maxim Deepak, Francis Leonard Petrovykh, Dmitri Y. Bdikin, Igor Ferro, Marta Kholkin, Andrei Titus, Elby Goncalves, Gil |
Palavras-chave: | ELECTROCHEMICAL HYDROGEN STORAGE HYDRAZINE-REDUCTION ROOM-TEMPERATURE OXIDE NANOPARTICLES HYBRID ROUTE COMPOSITES CR(VI) COBALT |
Data: | 2015 |
Editora: | ROYAL SOC CHEMISTRY |
Resumo: | 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. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/20980 |
DOI: | 10.1039/c5tc02619a |
ISSN: | 2050-7526 |
Versão do Editor: | 10.1039/c5tc02619a |
Aparece nas coleções: | CICECO - Artigos UA - Teses de doutoramento |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Synthesis and characterization of reduced graphene oxidespiky nickel nanocomposite for nanoelectronic applications_10.1039c5tc02619a.pdf | 1.91 MB | Adobe PDF |
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