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Effect on Variation of KMnO4 Amount for Production of Graphene Oxide (GO)

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Abstract:

Mass production of GO has always been an issue. Generally, there are 3 general methods available, namely Brodie’s, Staudenmaier’s and Hummer’s Method. These three methods differ in the type of oxidation agents used. There are plenty of developed methods to produce GO were reported in the literature including the improved Hummer’s method. This method is associated with the use of mixture of sulphuric acid/phosphoric acid (H2SO4/H3PO4) in 9:1 ratio without the presence of sodium nitrate (NaNO3).The amount of potassium permanganate (KMnO4) was set at 9.0g. This method allows high yield and ease of control. In this reaction, one of the important indicators was the colour changes during the addition of hydrogen peroxide (H2O2) into the mixture. However, with the large amount of KMnO4 added, the colour change was hardly observed. Therefore, one possible way to cope with that was to vary the amount of added KMnO4. Subsequently, the produced GO were characterized by X-Ray diffraction (XRD) and scanning electron microscope (SEM).

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Periodical:

Advanced Materials Research (Volume 1133)

Pages:

476-480

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1133.476

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Online since:

January 2016

Authors:

Nur Md Said Hidayah*, Wei Wen Liu, Wei Lai Chin, N.Z. Noriman, Uda Hashim

Keywords:

Graphene, Improved Hummer’s Method, Oxidizing Agent, Redox

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© 2016 Trans Tech Publications Ltd. All Rights Reserved

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