Flexible graphene fibers prepared by chemical reduction-induced self-assembly

Abstract

Flexible graphene fibers (GFs) with an ultimate elongation of 20% and a tensile strength up to 150 MPa were prepared by a facile low temperature chemical reduction-induced self-assembly method using graphene oxide (GO) suspensions reacted with vitamin C and then dried at room temperature.

MoS2 graphene fiber based gas sensing devices

“…As shown in Figure S3, the Brunauer-Emmmett-Teller (BET) specific surface areas of C:Mo (5:1) , C:Mo with the recent reported graphene based devices [31,32] . However, the values are lower than that of pure graphene fiber device (179.7), indicating that the existence of MoS 2 nanosheets decreases the surface area of the products [33] .The HRTEM image displayed in Figure 1(e) revealed G/M composite contained a few layers (5 -20) and…”

Graphene fiber: a new trend in carbon fibers

“…Jang et al used an electrophoretic self-assembly method to draw fibers from dispersions of graphene nanoribbons [68]. Chemical reduction-induced self-assembly was also used to make GFs from GO hydrogel fibers [69,70]. Despite the different concrete operations, these alternative methods have a similar principle to the wet-spinning process, including the use of a relatively high concentration of GO feed dispersions (that may imply the formation of LCs) and continuous flow to ensure the continuous alignment of graphene sheets along the fiber axis.…”

“…Besides wet-spinning, there have emerged some alternative methods for the fabrication of GFs from GO dispersions [61][62][63][64][65][66][67][68][69][70][71][72][73][74]. For example, Dong et al proposed a dimensionally confined hydrothermal strategy for GFs [66].…”

Tuning the grade of graphene: Gamma ray irradiation of free-standing graphene oxide films in gaseous phase

“…Current GO chemical reduction routes are typically performed in aqueous solution due to the facile dispersion of GO sheets in water by surface solvation [24]. The formation of graphene fibres and aerogels was also recently reported and show to lead to highly porous graphene materials with superior properties for solvent adsorption and tensile strength [25,26]. Alternative non-invasive functionalization routes, such as hard X-ray lithography, were previously shown to lead to effective and specific functionalization of thick arrays of carbon nanotubes by interfering with the surface electronic density of the graphitic walls in air, which lead to the formation of highly crystalline, but yet hydrophilic nanotubes [27].…”