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http://dx.doi.org/10.9713/kcer.2016.54.6.786

Environment-Friendly Synthesis of Graphene Ball and its Characterization  

Park, Su-Ryeon (Resources Utilization Research Center, Korea Institute of Geoscience and Mineral Resources)
Jo, Eun Hee (Resources Utilization Research Center, Korea Institute of Geoscience and Mineral Resources)
Kim, Sun Kyung (Resources Utilization Research Center, Korea Institute of Geoscience and Mineral Resources)
Chang, Hankwon (Resources Utilization Research Center, Korea Institute of Geoscience and Mineral Resources)
Jang, Hee Dong (Resources Utilization Research Center, Korea Institute of Geoscience and Mineral Resources)
Publication Information
Korean Chemical Engineering Research / v.54, no.6, 2016 , pp. 786-791 More about this Journal
Abstract
Spherical graphene balls were fabricated by an aerosol spray drying process after reduced graphene oxide was prepared by the liquid phase reaction using glucose as an environment-friendly reducing agent. Spherical morphology of the as-fabricated particles was observed by FE-SEM analysis. Diffraction patterns of spherical particles were found as graphene by XRD analysis. Sphericity of GB was controlled by the variation of operating temperature, amount of glucose, and addition of $NH_4OH$. Higher sphericity of GB was prepared at higher operating temperature in the presence of $NH_4OH$. As the amount of glucose in the liquid phase reaction increased in the presence of $NH_4OH$, sphericity of GB increased. The highest sphericity of GB was 1.1. GB of higher sphericity showed lower aggregation property than that of lower sphericity. Furthermore, as-prepared GBs were found as a potential electrode material for capacitor.
Keywords
Graphene ball; Sphericity; Liquid phase reaction; Aerosol process; Glucose;
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Times Cited By KSCI : 2  (Citation Analysis)
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