The Effect of Different Reduction Methods on Conductivity of Reduced-Graphene Oxide (r-GO)

Abstract:

Large quantity of graphene oxide (GO) was prepared by Modified Hummer’s method, in which graphite was treated with a mixture of sulphuric acid, potassium permanganate and hydrogen peroxide. A chemically reduced graphene oxide (r-GO) was prepared using sodium borohydride (NaBH₄), followed by thermal treatment and thermal treatment of chemically reduce using NaBH₄. The electrical resistance of r-GO was measured using Keithley sourcemeter. The results revealed that r-GO show lower resistance on thermal reduction which is 2.39 kΩ compared to chemical reduction and thermal of NaBH₄ reduction which is 2.18 MΩ and 3.16 kΩ respectively. It can be concluded that thermal reduction is the best method to produce high conductivity r-GO film.

• Periodical: Applied Mechanics and Materials (Volume 815)
• Pages: 216-220
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.815.216
• Online since: November 2015
• Authors: Muhammad Mahyiddin Ramli*, K.N. Hanim, M.R. Muda, Siti Salwa Mat Isa, M.F. Jamlos
• Keywords: Graphene Oxide, Modified Hummer’s Method, Reduced Graphene Oxide, Sodium Borohydride, Thermal Reduction

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