Synthesis of graphene flakes using a non-thermal plasma based on magnetically stabilized gliding arc discharge. Issue 10 (2nd October 2020)

• Record Type: Journal Article
• Authors: Li, Dongning; Wang, Cheng; Lu, ZhongShan; Song, Ming; Xia, Weiluo; Xia, Weidong
• Is Part Of: Fullerenes, nanotubes and carbon nanostructures. Volume 28:Issue 10(2020)
• Page Start: 846
• Page End: 856
• Publication Date: 2020-10-02
• Subjects: Non-thermal plasma -- graphene nanoflakes -- process parameters -- magnetically stabilized gliding arc discharge; Fullerenes -- Periodicals; Nanotubes -- Periodicals; Nanostructures -- Periodicals; 546.6812
• DOI: 10.1080/1536383X.2020.1774559
• Languages: English
• ISSNs: 1536-383X

Abstract

Abstract: The use of non-thermal plasma at atmospheric pressure has emerged as a technique for the substrate-free, gas-phase synthesis of graphene nanoflakes (GNFs). In this paper, a non-thermal plasma based on magnetically stabilized gliding arc discharge (MSGAD) was employed to prepare GNFs. The effects of the carbon-containing precursor, plasma gas, and arc current on the GNFs synthesis were investigated. The technique produced GNFs with sizes of 50–200 nm and 1–20 layers, spherical carbon nanoparticles with 10–40 nm diameters, and graphitic particles. The results showed that the formation of GNFs depended on the selection of proper process parameters, such as precursors with a high H/C ratio, an Ar-N2 plasma gas, a low arc current, a low precursor flow rate, and a suitable plasma gas flow rate. Correlations between the process parameters and the product morphology indicated that abundant H atoms and fewer polycyclic aromatic hydrocarbons were favorable for the formation of GNFs.