Microwave-assisted liquid phase exfoliation of graphite fluoride into fluorographene

Lei, Fan1; Yang, Meng1; Jiang, Feng1; Zhang, He1; Zhang, Zhi1,2; Sun, Dazhi1

2019-03-15

10.1016/j.cej.2018.12.044

CHEMICAL ENGINEERING JOURNAL   影响因子和分区

1385-8947

1873-3212

Fluorographene (FG), as an important class of graphene derivatives, has shown great promise in high-performance devices and lubricating materials. However, the large-scale fabrication of high-quality and impurity-free FG nanosheets still remains a main challenge. Herein, a simple liquid-phase exfoliation approach to prepare thin FG nanosheets through the preliminary intercalation of raw graphite fluoride (GrF) particles by N,N-dimethyl formamide molecules, followed by a short-time microwave treatment is reported. Atom force microscopy measurements demonstrate that as-prepared FG nanosheets are comprised of no more than four monolayers after the microwave irradiation. After exfoliation, a small amount of aromatic C=C groups in the FG nanosheets are restored, which slightly lowers the F content in FG as compared with the raw GrF. Besides, no other side reaction and impurity elements are introduced during the exfoliation process as revealed by X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy. The resultant high-quality FG nanosheets exhibit excellent thermal stability and remarkable lubrication behavior in oil, and thus can be used as a new class of graphene derivatives with the capability of large-scale fabrication for the future device and various other applications.

Fluorographene Graphite fluoride Exfoliation Microwave treatment Lubrication

SCI ; EI

英语

第一 ; 通讯

China Postdoctoral Science Foundation[2018M641634]

Engineering

Engineering, Environmental ; Engineering, Chemical

WOS:000460964000068

ELSEVIER SCIENCE SA

20185006229783

Amides ; Fluorine compounds ; Fourier transform infrared spectroscopy ; Graphene ; Graphene devices ; Lubrication ; Microwave heating ; Microwave irradiation ; Nanosheets ; X ray photoelectron spectroscopy

Lubrication:607.2 ; Electromagnetic Waves:711 ; Electromagnetic Waves in Different Media:711.1 ; Nanotechnology:761 ; Chemistry:801 ; Chemical Products Generally:804 ; Organic Compounds:804.1 ; Solid State Physics:933

ENGINEERING

Web of Science

1.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China
2.Shenzhen Nanketech Co Ltd, Shenzhen, Peoples R China

Lei, Fan,Yang, Meng,Jiang, Feng,et al. Microwave-assisted liquid phase exfoliation of graphite fluoride into fluorographene[J]. CHEMICAL ENGINEERING JOURNAL,2019,360:673-679.

Lei, Fan,Yang, Meng,Jiang, Feng,Zhang, He,Zhang, Zhi,&Sun, Dazhi.(2019).Microwave-assisted liquid phase exfoliation of graphite fluoride into fluorographene.CHEMICAL ENGINEERING JOURNAL,360,673-679.

Lei, Fan,et al."Microwave-assisted liquid phase exfoliation of graphite fluoride into fluorographene".CHEMICAL ENGINEERING JOURNAL 360(2019):673-679.