Influence of different buffer gases on synthesis of few-layered graphene by arc discharge method

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	Influence of different buffer gases on synthesis of few-layered graphene by arc discharge method
	Shen BS(申保收)1,2 ; Ding JJ(丁继军)1; Yan XB(阎兴斌)1 ; Feng WJ(冯旺军)2; Li J(李军)1,3; Xue QJ(薛群基)1
刊名	Applied Surface Science
	2012
卷号	258 期号:10 页码:4523-4531
关键词	Graphene Arc discharge Buffer gas Hydrophobility Field emission
ISSN号	0169-4332
通讯作者	阎兴斌
英文摘要	Few-layered graphene sheets were synthesized by direct current arc discharge using different buffer gases. The samples were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Raman spectroscopy, X-ray diffraction (XRD), atomic force microscopy (AFM), thermogravimetric analysis (TGA), Brunauer–Emmett–Teller (BET) and four-probe method. Moreover, the hydrophobility and the field emission properties of the sprayed-coating graphene films prepared by a direct solution process were studied. As a result, the generation of graphene sheets shows strong dependence on the composition of buffer gases and containing H₂ buffer gases are necessary to prepare few-layered graphene sheets. The graphene sheets produced in H₂–He buffer gases have better crystallinity and higher specific surface area compared with those produced in others containing H₂ buffer gases. The as-obtained graphene sheets are mainly no more than 5 layers and their lateral dimensions are about 40–200 nm. The graphene sheets show excellent thermal stability and there is only less than 3 wt.% weight loss up to 800 °C in N₂ atmosphere. The graphene sheets can be easily dispersed into ethanol and the as-obtained suspension can be stable for more than two months. The sprayed graphene films show good hydrophobility and a typical cold cathode field emission behavior.
学科主题	材料科学与物理化学
收录类别	SCI
资助信息	the Top Hundred Talents Programo f Chinese Academy of Sciences;the National Nature Science Foundations of China (grant nos. 51005225;51002161)
语种	英语
WOS记录号	WOS:000300991400048
公开日期	2013-07-12
内容类型	期刊论文
源URL	[http://210.77.64.217/handle/362003/3304]
专题	兰州化学物理研究所_固体润滑国家重点实验室
作者单位	1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China 2.Lanzhou Univ Technol, Sch Sci, Lanzhou 730050, Peoples R China 3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Shen BS,Ding JJ,Yan XB,et al. Influence of different buffer gases on synthesis of few-layered graphene by arc discharge method[J]. Applied Surface Science,2012,258(10):4523-4531.
APA	Shen BS,Ding JJ,Yan XB,Feng WJ,Li J,&Xue QJ.(2012).Influence of different buffer gases on synthesis of few-layered graphene by arc discharge method.Applied Surface Science,258(10),4523-4531.
MLA	Shen BS,et al."Influence of different buffer gases on synthesis of few-layered graphene by arc discharge method".Applied Surface Science 258.10(2012):4523-4531.