Graphene produced by radiation-induced reduction of graphene oxide

TL;DR

This paper investigates various irradiation methods for reducing graphene oxide, finding that laser irradiation rapidly produces high-quality graphene and enables one-step synthesis of metal-decorated graphene, suitable for large-scale production.

Contribution

It demonstrates that laser irradiation is an efficient and scalable method for producing high-quality graphene and metal-decorated graphene from graphene oxide.

Findings

Laser irradiation produces graphene with negligible oxygen functionalities quickly.

Sunlight and UV light reduce graphene oxide but require prolonged exposure.

Laser irradiation enables one-step synthesis of metal-decorated graphene.

Abstract

Effect of irradiation on graphene oxide by sunlight, UV light and KrF excimer laser has been investigated in detail. Both sunlight and ultraviolet light reduce graphene oxide well after prolonged irradiation, but laser irradiation produces graphene with negligible oxygen functionalities within a short time. Laser irradiation is also useful for one-step synthesis of metal particle decorated graphene. Laser irradiation of graphene oxide appears to be an efficient procedure for large-scale synthesis of graphene.