期刊
CARBON
卷 179, 期 -, 页码 133-141出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2021.04.038
关键词
Carbon nanostructures; General synthesis; Ambient condition; Graphene; Carbon nanotubes; n-diamond nanocrystals
资金
- National Natural Science Foundation of China [11604154, 11874106, 11574047]
- Fundamental Research Funds for the Central Universities [KJQN201711]
The study presents a facile and environmentally-friendly approach to synthesize a variety of carbon nanostructures under ambient conditions, including n-diamond nanocrystals, graphene, multiwalled carbon nanotubes, etc. The results provide insights into the low-temperature crystal growth process of carbon nanostructures.
The exploration of the synthesis methods of sp(2) and sp(3) carbon nanomaterials under ambient conditions is very meaningful towards their industrial applications. The existing bottom-up synthesis methods usually need high temperature or high pressure conditions. We report a facile and environmentally-friendly approach enabling the synthesis of almost all types of known carbon nanostructures at room temperature and under atmosphere pressure. They include both sp(3)-structured n-diamond (not cubic diamond) nanocrystals and sp(2)-structured graphene, defective multiwalled carbon nanotubes, defective carbon nano-onions as well as graphene polyhedra. The reaction of ethanol and potassium hydroxide at ambient conditions yields n-diamond nanocrystals. To synthesize the sp(2) carbon nanomaterials, the assistance of the ultrasonic shock at the early stage of crystallization is necessary to ensure the formation of the carbon ring nucleation seeds. The synthetic yields of n-diamond nanocrystals, graphene polyhedra, defective carbon nano-onions, and graphene are estimated to be 0.37%, 0.30%, 0.04%, and 0.01% (carbon mass ratio), respectively, and all of them have good crystallinity. These results improve our understanding of the low-temperature crystal growth process of the carbon nanostructures. (C) 2021 Elsevier Ltd. All rights reserved.
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