▎ 摘　　要

Here, we demonstrate the synthesis of graphene on Ag foil by an atmospheric-pressure (AP) chemical vapor deposition (CVD) process as tarnish-resistant coating. Synthesis of a continuous graphene film on Ag foil is achieved using the solid camphor as carbon precursor in a gas mixture of Ar and H-2. Tarnishing of the Ag surface through sulfidation is investigated with and without coating of the graphene film. It is observed that the bare Ag surface immediately reacts with sulfur vapor to turn black, whereas graphene coating passivates the Ag surface robustly and thereby restrains the sulfur reaction to preserve from tarnishing. Our findings show that a large-area graphene film can be effectively grown on Ag surface by a CVD process as a tarnish and corrosion resistance barrier. [GRAPHICS] Synthesis of graphene structure on Ag foil by an AP-CVD process as a tarnish-resistant coating. ((c) 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)