High-efficient Synthesis of Graphene Oxide Based on Improved Hummers Method.
As an important precursor and derivate of graphene, graphene oxide (GO) has received wide attention in recent years. However, the synthesis of GO in an economical and efficient way remains a great challenge. Here we reported an improved NaNO3-free Hummers method by partly replacing KMnO4with K2FeO4and controlling the amount of concentrated sulfuric acid. As compared to the existing NaNO3-free Hummers methods, this improved routine greatly reduces the reactant consumption while keeps a high yield. The obtained GO was characterized by various techniques, and its derived graphene aerogel was demonstrated as high-performance supercapacitor electrodes. This improved synthesis shows good prospects for scalable production and applications of GO and its derivatives.
College of Materials and Metallurgy, Inner Mongolia University of Science and Technology, Baotou, 014010, P. R. China.
Huitao
H
Yu
College of Materials and Metallurgy, Inner Mongolia University of Science and Technology, Baotou, 014010, P. R. China.
Bangwen
B
Zhang
College of Materials and Metallurgy, Inner Mongolia University of Science and Technology, Baotou, 014010, P. R. China.
Chaoke
C
Bulin
College of Materials and Metallurgy, Inner Mongolia University of Science and Technology, Baotou, 014010, P. R. China.
Ruihong
R
Li
College of Materials and Metallurgy, Inner Mongolia University of Science and Technology, Baotou, 014010, P. R. China.
Ruiguang
R
Xing