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Dinh, D. A., Hui, K. S. 
ORCID: https://orcid.org/0000-0001-7089-7587, Hui, K. N., Cho, Y. R., Zhou, Wei, Hong, Xiaoting and Chun, Ho-Hwan
(2014)
Green synthesis of high conductivity silver nanoparticle-reduced graphene oxide composite films.
Applied Surface Science, 298.
pp. 62-67.
ISSN 0169-4332
Abstract
A green facile chemical approach to control the dimensions of Ag nanoparticles-graphene oxide (AgNPs/GO) composites was performed by the in situ ultrasonication of a mixture of AgNO3 and graphene oxide solutions with the assistance of vitamin C acting as an environmentally friendly reducing agent at room temperature. With decreasing ultrasonication time, the size of the Ag nanoparticles decreased and became uniformly distributed over the surface of the GO nanosheets. The as-prepared AgNPs/rGO composite films were then formed using a spin coating method and reduced at 500 C under N2/H 2 gas flow for 1 h. Four-point probe measurements showed that the sheet resistance of the AgNPs/rGO films decreased with decreasing AgNPs size. The lowest sheet resistance of 270 Ω/sq was obtained in the film corresponding to 1 min of ultrasonication, which showed a 40 times lower resistivity than the rGO film (10.93 kΩ/sq). The formation mechanisms of the as-prepared AgNPs/rGO films are proposed. This study provides a guide to controlling the dimensions of AgNPs/rGO films, which might hold promise as advanced materials for a range of analytical applications, such as catalysis, sensors and microchips.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | composites,dimension controlled,electrical property,films,reduced graphene oxide,silver nanoparticles,ultrasonication,vitamin c |
| Faculty \ School: | Faculty of Science > School of Engineering (former - to 2024) University of East Anglia Research Groups/Centres > Theme - ClimateUEA |
| UEA Research Groups: | Faculty of Science > Research Groups > Energy Materials Laboratory Faculty of Science > Research Groups > Emerging Technologies for Electric Vehicles (EV) |
| Related URLs: | |
| Depositing User: | Pure Connector |
| Date Deposited: | 04 Oct 2016 12:01 |
| Last Modified: | 25 Sep 2024 12:15 |
| URI: | https://ueaeprints.uea.ac.uk/id/eprint/60666 |
| DOI: | 10.1016/j.apsusc.2014.01.101 |
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