First-principles studies of adsorption behavior for graphene nanosheet on Al-doped BiF3(111) surfaces
First-principles studies of adsorption behavior for graphene nanosheet on Al-doped BiF3(111) surfaces
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Al掺杂BiF3(111)表面石墨烯纳米片吸附行为的第一性原理研究
DOI:
10.1016/j.matchemphys.2016.02.015
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发表时间:
2016-04
影响因子:
4.6
通讯作者:
Xianyou Wang
中科院分区:
文献类型:
--
作者:
Zhenhua Yang;Shuncheng Tan;Zhijuan Zhang;Yunqing Huang;Xianyou Wang
We have carried out first-principles calculations to study surface properties of BiF3(111) surface. Calculated surface energies indicate that BiF3(111) surface with F termination (BiF3(111)-F) is more stable than BiF3(111) surface with Bi termination (BiF3(111)-Bi). Three typical adsorption sites for Al on the BiF3(111)-F surface, such as top site, bridge site and hollow site, were investigated. Average formation energies per Al adatom indicate Al adsorption sites are all thermodynamically stable and the top site is the most favorable site of Al adsorption. Besides, we have further searched the possibility of promoting adsorption behavior for graphene nanosheet (GNS) on the BiF3(111)-F surface via replacing surface Al atoms. Calculated results suggest that Al doping can enhance the binding of GNS with BiF3(111)-F surface by strong hybridization among F 2p, Al 3p and C 2p orbits. Moreover, GNS coating can also improve the conductivity of BiF3(111)-F surface.
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