Facile oxygen intercalation between full layer graphene and Ru(0001) under ambient conditions

SURFACE SCIENCE

卷:634

Article

Dong, Aiyi¹  Fu, Qiang¹  Wei, Mingming¹  Liu, Yun¹  Ning, Yanxiao¹  Yang, Fan¹  Bluhm, Hendrik²  Bao, Xinhe¹ 

[1] Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

[2] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA

关键词: Graphene;    Intercalation;    AP-XPS;    Oxidation;    Ru(0001);   

DOI  :  10.1016/j.susc.2014.10.008

来源: Elsevier

【 摘 要 】

Graphene coatings have been widely considered as protection layers on metal surfaces to prevent surface oxidation and corrosion in gaseous atmospheres. Here, using in-situ ambient pressure X-ray photoelectron spectroscopy we demonstrate that oxygen intercalation readily occurs at full monolayer graphene/Ru(0001) interfaces in 0.5 Torr O-2 around 150 degrees C, resulting in decoupling of the graphene overlayer from the Ru surface and oxidation of the metal surface. Moreover, oxygen intercalation has been observed even upon illumination of the graphene/Ru(0001) surface with an infrared lamp in air. These results indicate that the stability of graphene/metal interfaces under ambient conditions should be taken into consideration for future applications. (C) 2014 Elsevier B.V. All rights reserved.

【 授权许可】

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