TY - JOUR
T1 - Atomic bonding between metal and graphene
AU - Wang, Hongtao
AU - Feng, Qiong
AU - Cheng, Yingchun
AU - Yao, Yingbang
AU - Wang, Qingxiao
AU - Li, Kun
AU - Schwingenschlögl, Udo
AU - Zhang, Xixiang
AU - Yang, Wei
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: H.T.W. acknowledges financial support from the National Science Foundation of China (Grant No. 11090333), Scientific Research Fund of Zhejiang Provincial Education Department (Grant No. Z200906194), and Science and Technology Innovative Research Team of Zhejiang Province (No. 2009R50010).
PY - 2013/2/21
Y1 - 2013/2/21
N2 - To understand structural and chemical properties of metal-graphene composites, it is crucial to unveil the chemical bonding along the interface. We provide direct experimental evidence of atomic bonding between typical metal nano structures and graphene, agreeing well with density functional theory studies. Single Cr atoms are located in the valleys of a zigzag edge, and few-atom ensembles preferentially form atomic chains by self-assembly. Low migration barriers lead to rich dynamics of metal atoms and clusters under electron irradiation. We demonstrate no electron-instigated interaction between Cr clusters and pristine graphene, though Cr has been reported to be highly reactive to graphene. The metal-mediated etching is a dynamic effect between metal clusters and pre-existing defects. The resolved atomic configurations of typical nano metal structures on graphene offer insight into modeling and simulations on properties of metal-decorated graphene for both catalysis and future carbon-based electronics. © 2013 American Chemical Society.
AB - To understand structural and chemical properties of metal-graphene composites, it is crucial to unveil the chemical bonding along the interface. We provide direct experimental evidence of atomic bonding between typical metal nano structures and graphene, agreeing well with density functional theory studies. Single Cr atoms are located in the valleys of a zigzag edge, and few-atom ensembles preferentially form atomic chains by self-assembly. Low migration barriers lead to rich dynamics of metal atoms and clusters under electron irradiation. We demonstrate no electron-instigated interaction between Cr clusters and pristine graphene, though Cr has been reported to be highly reactive to graphene. The metal-mediated etching is a dynamic effect between metal clusters and pre-existing defects. The resolved atomic configurations of typical nano metal structures on graphene offer insight into modeling and simulations on properties of metal-decorated graphene for both catalysis and future carbon-based electronics. © 2013 American Chemical Society.
UR - http://hdl.handle.net/10754/562680
UR - https://pubs.acs.org/doi/10.1021/jp311658m
UR - http://www.scopus.com/inward/record.url?scp=84874864608&partnerID=8YFLogxK
U2 - 10.1021/jp311658m
DO - 10.1021/jp311658m
M3 - Article
SN - 1932-7447
VL - 117
SP - 4632
EP - 4638
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
IS - 9
ER -