Ice crystal guided folding of graphene oxides in a confined space: a facile approach to 1D functional graphene structures.

Autor: Wan W; Yazhou Bay Innovation Institute, Hainan Tropical Ocean University 572022 Sanya Hainan China +86-898-88651738.; State Key Lab of Fine Chemicals, School of Chemical Engineering, Liaoning Key Lab for Energy Materials and Chemical Engineering, Dalian University of Technology Dalian 116024 China jqiu@dlut.edu.cn +86-411-84986080., Zhao Z; State Key Lab of Fine Chemicals, School of Chemical Engineering, Liaoning Key Lab for Energy Materials and Chemical Engineering, Dalian University of Technology Dalian 116024 China jqiu@dlut.edu.cn +86-411-84986080., Liu S; State Key Lab of Fine Chemicals, School of Chemical Engineering, Liaoning Key Lab for Energy Materials and Chemical Engineering, Dalian University of Technology Dalian 116024 China jqiu@dlut.edu.cn +86-411-84986080., Hao X; Zhejiang Engineering Research Center for Tissue Repair Materials, Wenzhou Institute, University of Chinese Academy of Sciences 325000 Wenzhou Zhejiang China xiaojuan.hao@wiucas.ac.cn +86 13943798325.; Manufacturing, Commonwealth Scientific and Industrial Research Organization (CSIRO) Clayton VIC 3168 Australia tim.hughes@csiro.au +61-3-95452503., Hughes TC; Manufacturing, Commonwealth Scientific and Industrial Research Organization (CSIRO) Clayton VIC 3168 Australia tim.hughes@csiro.au +61-3-95452503., Qiu J; State Key Lab of Fine Chemicals, School of Chemical Engineering, Liaoning Key Lab for Energy Materials and Chemical Engineering, Dalian University of Technology Dalian 116024 China jqiu@dlut.edu.cn +86-411-84986080.
Jazyk: angličtina
Zdroj: Nanoscale advances [Nanoscale Adv] 2024 Feb 02; Vol. 6 (6), pp. 1643-1647. Date of Electronic Publication: 2024 Feb 02 (Print Publication: 2024).
DOI: 10.1039/d3na00995e
Abstrakt: The controlled conformational changes of planar graphene nanosheets are of great importance to the realization of their practical applications. Despite substantial effort in the area, the controlled folding of two-dimensional (2D) graphene sheets into one-dimensional (1D) structures still remains a significant challenge. Here, for the first time, we report an ice crystal guided folding strategy to fabricate 1D folded graphene nanobelts (FGBs), where the formation and growth of ice crystals in a confined space function to guide the folding of 2D graphene oxide (GO) nanosheets into 1D nanobelts ( i.e. folded graphene oxide belts, FGOBs), which were subsequently converted to FGBs after annealing. Thin aqueous GO containing films were obtained by blowing air through a GO dispersion in the presence of a surfactant, polyoxypropylenediamine (D 400 ), resulting in a foam containing uniform air bubbles. Subsequent shock cooling of the foam using liquid nitrogen resulted in the facile fabrication of FGOBs. This technique provides a general approach to encapsulate catalytic nanomaterials such as Fe 3 O 4 nanorods, TiO 2 and Co 3 O 4 nanoparticles into the folded graphene structure for practical applications such as Li-ion batteries.
Competing Interests: There are no conflicts of interest to declare.
(This journal is © The Royal Society of Chemistry.)
Databáze: MEDLINE
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