Role of the carbon source in the transformation of amorphous carbon to graphene during rapid thermal processing. Issue 18 (17th April 2019)

• Record Type: Journal Article
• Authors: Li, Xiaowei; Zhou, Yong; Xu, Xiaowei; Wang, Aiying; Lee, Kwang-Ryeol
• Is Part Of: Physical chemistry chemical physics. Volume 21:Issue 18(2019)
• Page Start: 9384
• Page End: 9390
• Publication Date: 2019-04-17
• Subjects: Chemistry, Physical and theoretical -- Periodicals; 541.3
• DOI: 10.1039/c9cp01305a
• Languages: English
• ISSNs: 1463-9076

Abstract

Abstract : A fast transfer-free synthesis of a graphene structure can be successfully achieved by Ni-catalysed transformation of amorphous carbon (a-C) during rapid thermal processing, but the role of the a-C structure in the a-C-to-graphene transformation is still unclear. Abstract : A fast transfer-free synthesis of a graphene structure can be successfully achieved by Ni-catalysed transformation of amorphous carbon (a-C) during rapid thermal processing, but the role of the a-C structure in the a-C-to-graphene transformation is still unclear. In this paper, the dependence of the transformation of a-C to graphene, the diffusion behaviour of C, and the graphene quality on the a-C structures was comparatively investigated by reactive molecular dynamics simulation and Ni was selected as a catalyst. The results demonstrated that different a-C structures affected the diffusion of C into Ni layers and the re-dissolving behaviour of the grown graphitic structures, and thus dominated the remnant number of C atoms, which played a critical role in the formation and quality of graphene.