Unraveling the Influence of Metal Substrates on Graphene Nucleation from First-Principles Study

Zhong, Lixiang1,2; Li, Jia1; Li, Yuanchang3; Lu, Haizhou4; Du, Hongda1; Gan, Lin1; Xu, Chengjun1; Chiang, Sum Wai1; Kang, Feiyu1,2

2016-10-13

10.1021/acs.jpcc.6b06750

Journal of Physical Chemistry C   影响因子和分区

1932-7447

Using ab initio calculations, we systematically investigate graphene nucleation on 10 representative metal substrates that have been used in graphene growth by chemical vapor deposition. We find that the metal substrates can be divided into three categories with respect to the competition between carbon carbon (C-C) and carbon metal (C-M) interactions, which leads to the distinct critical size (N-c) dependence of the smallest graphene precursor on the substrates. The C-M interactions are weak on Ag, Au, Cu, and Co substrates, and the chemical potential of carbon decreases monotonically to approach that of graphene as the size of the carbon clusters increases. We observed an N-c around C-13-C-14 corresponding to the structural transition from a linear chain to sp(2) configuration on these substrates. In contrast, the C-M interactions are strong on Ru, Pt, Rh, and Ir substrates, and the extremely stable carbon monomerr-therm-odynarnically determines the larger N-c about C-19. The third category is Ni and Pd substrates, for which carbon atoms tend to penetrate into the first layer of the metal substrates, implying a more complicated graphene nucleation mechanism. We:also discuss the growth kinetics of the small carbon dusters as well as the effect of the practical environment,: like surface defects, on graphene nucleation.

SCI ; EI

英语

其他

Guangdong Province Innovation R&D Team Plan for Energy and Environmental Materials[2009010025]

Chemistry ; Science & Technology - Other Topics ; Materials Science

Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary

WOS:000385607000053

AMER CHEMICAL SOC

20164302930587

Calculations ; Carbon clusters ; Chemical vapor deposition ; Growth kinetics ; Metals ; Nucleation ; Surface defects

Nanotechnology:761 ; Chemical Reactions:802.2 ; Chemical Products Generally:804 ; Mathematics:921 ; Crystal Growth:933.1.2 ; Materials Science:951

Web of Science

1.Tsinghua Univ, Guangdong Prov Key Lab Thermal Management Engn &, Grad Sch Shenzhen, Shenzhen 518055, Peoples R China
2.Tsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China
3.Natl Ctr Nanosci & Technol, Beijing 100190, Peoples R China
4.South Univ Sci & Technol China, Dept Phys, Shenzhen 518055, Peoples R China

Zhong, Lixiang,Li, Jia,Li, Yuanchang,et al. Unraveling the Influence of Metal Substrates on Graphene Nucleation from First-Principles Study[J]. Journal of Physical Chemistry C,2016,120(40):23239-23245.

Zhong, Lixiang.,Li, Jia.,Li, Yuanchang.,Lu, Haizhou.,Du, Hongda.,...&Kang, Feiyu.(2016).Unraveling the Influence of Metal Substrates on Graphene Nucleation from First-Principles Study.Journal of Physical Chemistry C,120(40),23239-23245.

Zhong, Lixiang,et al."Unraveling the Influence of Metal Substrates on Graphene Nucleation from First-Principles Study".Journal of Physical Chemistry C 120.40(2016):23239-23245.