Reduction of graphene oxide by Ar-H2 mixture gase at 200 °C with the aid of Pd

Graphene oxide is reduced by Ar-H2 mixture gas at 200 °C with the aid of Pd. The nano-size Pd deposited on the surface of GO catalyzes the H2 to dissociate into high active atomic hydrogen species [H], which would reduce the graphene oxide. Such reduction method is a sample and environment benign process, which avoids heteroatoms introduced and high temperature energy used.