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arXiv · 1906.00354

Intercalation of O$_2$ and N$_2$ in the Graphene/Ni Interfaces of Different Morphology

Changbao Zhao·Jiayi Li·Jiuxiang Dai·Elena Voloshina·Yuriy Dedkov·Yi Cui
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Abstract

Near-ambient pressure XPS and STM experiments are performed to study the intercalation of oxygen and nitrogen at different partial gas pressures and different temperatures in the graphene/Ni/Ir(111) system of different morphologies. We performed detailed experiments on the investigation of the chemical state and topography of graphene, before and after gas intercalation, depending on the amount of pre-intercalated Ni in graphene/Ir(111). It is found that only oxygen can be intercalated under graphene in all considered cases, indicating the role of the intra-molecular bonding strength and possibility of gas molecules dissociation on different metallic surfaces on the principal possibility and on the mechanism of intercalation of different species under graphene.

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Changbao Zhao, Jiayi Li, Jiuxiang Dai, Elena Voloshina, Yuriy Dedkov, Yi Cui. 2019-06-02. Intercalation of O$_2$ and N$_2$ in the Graphene/Ni Interfaces of Different Morphology. https://doi.org/10.1021/acs.jpcc.9b01407

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