Gram-scale bottom-up flash graphene synthesis

doi:10.1038/s41586-020-1938-0

GSTDTAP > 地球科学

DOI	10.1038/s41586-020-1938-0
	Gram-scale bottom-up flash graphene synthesis
	Long, Haizhen 1,2; Zhang, Liwei 1; Lv, Mengjie 3; Wen, Zengqi 1,2; Zhang, Wenhao 4; Chen, Xiulan 2,5; Zhang, Peitao 6; Li, Tongqing 7; Chang, Luyuan 1,2; Jin, Caiwei 2,3; Wu, Guozhao 1,2; Wang, Xi 8; Yang, Fuquan 2,5; Pei, Jianfeng 7; Chen, Ping 1; Margueron, Raphael 9; Deng, Haiteng 4; Zhu, Mingzhao 2,3; Li, Guohong 1,2
	2020-01-09
发表期刊	NATURE
ISSN	0028-0836
EISSN	1476-4687
出版年	2020
卷号	577 期号:7792 页码:647-651
文章类型	Article
语种	英语
国家	USA
英文关键词	Most bulk-scale graphene is produced by a top-down approach, exfoliating graphite, which often requires large amounts of solvent with high-energy mixing, shearing, sonication or electrochemical treatment(1-3). Although chemical oxidation of graphite to graphene oxide promotes exfoliation, it requires harsh oxidants and leaves the graphene with a defective perforated structure after the subsequent reduction step(3,4). Bottom-up synthesis of high-quality graphene is often restricted to ultrasmall amounts if performed by chemical vapour deposition or advanced synthetic organic methods, or it provides a defect-ridden structure if carried out in bulk solution(4-6). Here we show that flash Joule heating of inexpensive carbon sources-such as coal, petroleum coke, biochar, carbon black, discarded food, rubber tyres and mixed plastic waste-can afford gram-scale quantities of graphene in less than one second. The product, named flash graphene (FG) after the process used to produce it, shows turbostratic arrangement (that is, little order) between the stacked graphene layers. FG synthesis uses no furnace and no solvents or reactive gases. Yields depend on the carbon content of the source when using a high-carbon source, such as carbon black, anthracitic coal or calcined coke, yields can range from 80 to 90 per cent with carbon purity greater than 99 per cent. No purification steps are necessary. Raman spectroscopy analysis shows a low-intensity or absent D band for FG, indicating that FG has among the lowest defect concentrations reported so far for graphene, and confirms the turbostratic stacking of FG, which is clearly distinguished from turbostratic graphite. The disordered orientation of FG layers facilitates its rapid exfoliation upon mixing during composite formation. The electric energy cost for FG synthesis is only about 7.2 kilojoules per gram, which could render FG suitable for use in bulk composites of plastic, metals, plywood, concrete and other building materials. Flash Joule heating of inexpensive carbon sources is used to produce gram-scale quantities of high-quality graphene in under a second, without the need for a furnace, solvents or reactive gases.
领域	地球科学 ; 气候变化 ; 资源环境
收录类别	SCI-E
WOS记录号	WOS:000509653700001
WOS关键词	LIQUID-PHASE EXFOLIATION ; GRAPHITE ; CARBON
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/281009
专题	地球科学资源环境科学气候变化
作者单位	1.Chinese Acad Sci, Inst Biophys, Ctr Excellence Biomacromol, Natl Lab Biomacromol, Beijing, Peoples R China; 2.Univ Chinese Acad Sci, Beijing, Peoples R China; 3.Chinese Acad Sci, Inst Biophys, Key Lab Infect & Immun, Beijing, Peoples R China; 4.Tsinghua Univ, Sch Life Sci, Key Lab Bioinformat, Minist Educ MOE, Beijing, Peoples R China; 5.Chinese Acad Sci, Inst Biophys, Lab Prote, Beijing, Peoples R China; 6.Tianjin Med Univ, Dept Cell Biol, Tianjin, Peoples R China; 7.Peking Univ, Acad Adv Interdisciplinary Studies, Ctr Quantitat Biol, Beijing, Peoples R China; 8.Capital Med Univ, Sch Basic Med Sci, Dept Immunol, Beijing, Peoples R China; 9.PSL Res Univ, Inst Curie, Paris, France
推荐引用方式 GB/T 7714	Long, Haizhen,Zhang, Liwei,Lv, Mengjie,et al. Gram-scale bottom-up flash graphene synthesis[J]. NATURE,2020,577(7792):647-651.
APA	Long, Haizhen.,Zhang, Liwei.,Lv, Mengjie.,Wen, Zengqi.,Zhang, Wenhao.,...&Li, Guohong.(2020).Gram-scale bottom-up flash graphene synthesis.NATURE,577(7792),647-651.
MLA	Long, Haizhen,et al."Gram-scale bottom-up flash graphene synthesis".NATURE 577.7792(2020):647-651.