Synthesis and characterization of graphene from rice husks

Abstract

Graphene has received much attention because of its unique properties with various expected applications. To now methods for its growth of graphene have been mainly catalytic chemical vapor deposition, heat-treatment of SiC, and the reduction of graphene-oxide. However, there still is room for methods that are more simple, cost-effective, and large scale. In this contribution, we review the synthesis and characterization of graphene from agricultural waste such as rice husks. The graphene obtained from rice husk possesses a unique structure with clean edges, nanosize holes, and topological defects in the carbon lattice, which could trigger novel physicochemical properties. It is envisaged that graphene from rice husks opens the possibility of developing various applications due to its inexpensive, simple and scalable production.