SYNTHESIS OF GRAPHENE OXIDE USING MILDLY OXIDIZED GRAPHITE THROUGH ULTRASONIC EXFOLIATION

Yang Hu, Zhuang Li, Hongqiang Li, Shaoxian Song and Alejandro Lopez-Valdivieso
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Yang Hu: School of Resources and Environmental Engineering, Wuhan University of Technology, 122 Luoshi Road, Wuhan, Hubei 430070, P. R. China†Instituto de Metalurgia, Universidad Autónoma de San Luis Potosí, Av. Sierra Leona 550, San Luis Potosi C.P. 78210, Mexico
Zhuang Li: School of Resources and Environmental Engineering, Wuhan University of Technology, 122 Luoshi Road, Wuhan, Hubei 430070, P. R. China
Hongqiang Li: School of Resources and Environmental Engineering, Wuhan University of Technology, 122 Luoshi Road, Wuhan, Hubei 430070, P. R. China
Shaoxian Song: School of Resources and Environmental Engineering, Wuhan University of Technology, 122 Luoshi Road, Wuhan, Hubei 430070, P. R. China
Alejandro Lopez-Valdivieso: #x2020;Instituto de Metalurgia, Universidad Autónoma de San Luis Potosí, Av. Sierra Leona 550, San Luis Potosi C.P. 78210, Mexico

Surface Review and Letters (SRL), 2017, vol. 24, issue 06, 1-7

Abstract: This study investigated the preparation of graphene oxide from mildly oxidized graphite through ultrasonic exfoliation. Both the original and produced materials were analyzed by ultraviolet–visible spectrophotometer, X-ray diffraction and atomic force microscopy. The results indicated that the exfoliation yield of graphene oxide was proportional to the input ultrasonic energy. In addition, a two-stage exfoliation phenomenon was observed in the exfoliation of mildly oxidized graphite with both ultrasonic homogenizer and cleaner. It also was found that increasing the content of [O] in a C–H2SO4–[O] reaction system was the most simple and direct method to increase the oxidation degree of graphite oxide.

Keywords: Graphene oxide; ultrasonic exfoliation; improved Hummers’ method (search for similar items in EconPapers)
Date: 2017
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Citations: View citations in EconPapers (1)

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DOI: 10.1142/S0218625X17500871

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