Facile Synthesis of Graphene Nanosheets via Fe Reduction of Exfoliated Graphite Oxide

Abstract

The synthesis of graphene nanosheets from graphite oxide typically involves harmful chemical reductants that are undesirable for most practical applications of graphene. Here, we demonstrate a green and facile approach to the synthesis of graphene nanosheets based on Fe reduction of exfoliated graphite oxide, resulting in a substantial removal of oxygen functionalities of the graphite oxide. More interestingly, the resulting graphene nanosheets with residual Fe show a high adsorption capacity of 111.62 mg/g for methylene blue at room temperature, as well as easy magnetic separation from the solution. This approach offers a potential for cost-effective, environmentally friendly, and large-scale production of graphene nanosheets.

Room-Temperature Humidity Sensing Using Graphene Oxide Thin Films

“…The Raman Intensity (I D /I G ) value of 0.96 is obtained for graphene oxide. These values are consistent with previous works [23]- [26]. Elemental characterization of graphene oxide was carried out using energy-dispersive X-ray spectroscopy ( Figure 5).…”

Graphene based metal and metal oxide nanocomposites: synthesis, properties and their applications

“…137 The reaction is fast and completed within one minute, i.e. much less time than reported for the reduction of graphene oxide with iron 138 and aluminum powder. 136 The low reduction potential of Zn 2+ /Zn and the ultrasonication facilitated the fast and efficient reduction of GRO.…”

Graphene oxide adsorption enhanced by in situ reduction with sodium hydrosulfite to remove acridine orange from aqueous solution

“…As seen, the equilibrium concentration 14 (C e , g L -1 ) and equilibrium adsorption capacity values (q e , mg g -1 ) were fitted by their linearized expressions [29][30][31][32][42][43][44]. Accordingly, the maximum adsorption capacity for GO and SRGO were calculated by the Langmuir equation, as follows:…”