石墨烯
材料科学
吸附
碳纤维
氢
氢键
化学物理
债券
图层(电子)
化学工程
纳米技术
物理化学
分子
复合数
复合材料
化学
业务
有机化学
工程类
财务
作者
Srivats Rajasekaran,Frank Abild‐Pedersen,Hirohito Ogasawara,Anders Nilsson,Sarp Kaya
标识
DOI:10.1103/physrevlett.111.085503
摘要
We report on the hydrogen adsorption induced phase transition of a few layer graphene (1 to 4 layers) to a diamondlike structure on Pt(111) based on core level x-ray spectroscopy, temperature programed desorption, infrared spectroscopy, and density functional theory total energy calculations. The surface adsorption of hydrogen induces a hybridization change of carbon from the $s{p}^{2}$ to the $s{p}^{3}$ bond symmetry, which propagates through the graphene layers, resulting in interlayer carbon bond formation. The structure is stabilized through the termination of interfacial $s{p}^{3}$ carbon atoms by the substrate. The structural transformation occurs as a consequence of high adsorption energy.
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