title: Self-Assembly of Hydrofluorinated Janus Graphene Monolayer: A Versatile Route for Designing Novel Janus Nanoscrolls.
abstract: With remarkably interesting surface activities, two-dimensional Janus materials arouse intensive interests recently in many fields. We demonstrate by molecular dynamic simulations that hydrofluorinated Janus graphene (J-GN) can self-assemble into Janus nanoscroll (J-NS) at room temperature. The van der Waals (vdW) interaction and the coupling of C-H/π/C-F interaction and π/π interaction are proven to offer the continuous driving force of self-assembly of J-GN. The results show that J-GN can self-assemble into various J-NSs structures, including arcs, multi-wall J-NS and arm-chair-like J-NS by manipulating its original geometry (size and aspect ratio). Moreover, we also investigated self-assembly of hydrofluorinated J-GN and Fe nanowires (NWs), suggesting that Fe NW is a good alternative to activate J-GN to form J-NS. Differently, the strong vdW interaction between J-GN and Fe NW provides the main driving force of the self-assembly. Finally, we studied the hydrogen sorption over the formed J-NS with a considerable interlayer spacing, which reaches the US DOE target, indicating that J-NS is a promising candidate for hydrogen storage by controlling the temperature of system. Our theoretical results firstly provide a versatile route for designing novel J-NS from 2D Janus nanomaterials, which has a great potential application in the realm of hydrogen storage/separation.
authors.affiliation: State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao 266580, Shandong, P. R. China.|College of Science, China University of Petroleum, Qingdao 266580, Shandong, P. R. China.
authors.forename: Yakang
authors.initials: Y
authors.lastname: Jin
authors.affiliation: State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao 266580, Shandong, P. R. China.|College of Science, China University of Petroleum, Qingdao 266580, Shandong, P. R. China.
authors.forename: Qingzhong
authors.initials: Q
authors.lastname: Xue
authors.affiliation: College of Science, China University of Petroleum, Qingdao 266580, Shandong, P. R. China.
authors.forename: Lei
authors.initials: L
authors.lastname: Zhu
authors.affiliation: State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao 266580, Shandong, P. R. China.
authors.forename: Xiaofang
authors.initials: X
authors.lastname: Li
authors.affiliation: State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao 266580, Shandong, P. R. China.
authors.forename: Xinglong
authors.initials: X
authors.lastname: Pan
authors.affiliation: College of Science, China University of Petroleum, Qingdao 266580, Shandong, P. R. China.
authors.forename: Jianqiang
authors.initials: J
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao 266580, Shandong, P. R. China.
authors.forename: Wei
authors.initials: W
authors.lastname: Xing
authors.affiliation: College of Science, China University of Petroleum, Qingdao 266580, Shandong, P. R. China.
authors.forename: Tiantian
authors.initials: T
authors.lastname: Wu
authors.affiliation: Nano-Science Center and Department of Chemistry, University of Copenhagen, Copenhagen, DK-2100, Denmark.
authors.forename: Zilong
authors.initials: Z
authors.lastname: Liu