期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 115, 期 42, 页码 20538-20545出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp204723k
关键词
-
资金
- Knowledge Innovation Engineering of Chinese Academy of Sciences [KJCX2-YW-W22, YYYJ-0701]
- Ministry of Science & Technology of People's Republic of China [2007BAE34B00, 2006AA03A146, 2007CB936300, 2006AA03A107]
- National Natural Science Foundation of China [50972162, 50702073, 51072223]
- Major State Basic Research Development Program of China (973 Program) [2011CB932700]
Preparation of high quality graphene with uniform layers currently remains a bottleneck. In particular, graphene with only one large-sized monolayer is very difficult to obtain. With epitaxial growth of graphene under a hydrogen atmosphere and high temperature, even as high as 1550 degrees C, the obtained graphene was intercalated by methane and methyl group (-CH3) species. Spontaneously, this intercalation makes the coupling of adjacent layers weak and leads to each layer behaving like free-standing graphene. X-ray diffraction spectra demonstrate that the interdistance of adjacent layers is abnormally large, disclosing each layer suspended by the intercalation, regardless of the layer number. Our findings have opened a possible route to prepare free-standing, high quality graphene effectively in large-scale, behaving like one monolayer free-standing graphene. The Raman spectra also support this conclusion.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据