Easy and green synthesis of reduced graphite oxide-based hydrogels

Sui, Zhuyin; Zhang, Xuetong; Lei, Yu; Luo, Yunjun

doi:10.1016/j.carbon.2011.06.006

Cited by 252 publications

(173 citation statements)

References 61 publications

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“…A number of methods, such as self-gelation and chemical vapour deposition (CVD) over a porous catalyst have recently been developed to fabricate highly porous graphene cellular monoliths [5][6][7][8][9][10][11][12] . However, as with most of the existing porous carbon materials 13 , the resulting graphene monoliths are generally brittle and have small recoverable deformation before failure unless they are infiltrated with an elastomeric polymer 5 or grown on pre-formed carbon nanotube aerogels 14 .…”

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confidence: 99%

Biomimetic superelastic graphene-based cellular monoliths

et al. 2012

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Many applications proposed for graphene require multiple sheets be assembled into a monolithic structure. The ability to maintain structural integrity upon large deformation is essential to ensure a macroscopic material which functions reliably. However, it has remained a great challenge to achieve high elasticity in three-dimensional graphene networks. Here we report that the marriage of graphene chemistry with ice physics can lead to the formation of ultralight and superelastic graphene-based cellular monoliths. Mimicking the hierarchical structure of natural cork, the resulting materials can sustain their structural integrity under a load of 450,000 times their own weight and can rapidly recover from 480% compression. The unique biomimetic hierarchical structure also provides this new class of elastomers with exceptionally high energy absorption capability and good electrical conductivity. The successful synthesis of such fascinating materials paves the way to explore the application of graphene in a self-supporting, structurally adaptive and 3D macroscopic form.

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confidence: 99%

Biomimetic superelastic graphene-based cellular monoliths

et al. 2012

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“…Compounding of alginate with other polymers such as pectin [13] or chitosan [14] has been found to provide just a marginal effect. Meanwhile, graphene oxide (GO) has attracted a great attention in various fields including tissue engineering because of its novel properties such as good electric conductivity, thermal conductivity, mechanical stiffness, and biocompatible properties [15][16][17][18] . GO sheets have been reported to be ultra-strong and biocompatible; therefore, GO is a desirable nanomaterial for modifying scaffolds used in tissue engineering [19] .…”

Section: Introductionmentioning

confidence: 99%

Rheological study on 3D printability of alginate hydrogel and effect of graphene oxide

Liu

Li³

2016

ijb

189

157

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Rheological study on 3D printability of alginate hydrogel and effect of graphene oxide. © 2016 Huijun Li, et al. This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), permitting all non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. 54 RESEARCH ARTICLERheological study on 3D printability of alginate hydrogel and effect of graphene oxide Abstract: In recent years, hydrogels have been used as important biomaterials for 3D printing of three dimensional tissues or organs. The key issue for printing a successful scaffold is the selection of a material with a good printability. Rheological properties of hydrogels are believed to pay an important role in 3D printability. However the relations between rheological properties of hydrogels and 3D printability have not been extensively studied. In this study, alginate-based hydrogels were prepared as a model material for an extrusion-based printer and graphene oxide was added to modify the rheological properties and 3D printability of the hydrogels. Rheological studies were performed for the hydrogel samples with different formulas. The range of shear rates that the hydrogels suffered during the printing process was deduced. This range of shear rates helped us to select a proper shear rate to investigate the thixotropic properties of the hydrogels. Furthermore, we also defined some measureable parameters to describe and discuss the quality of 3D printing. The present study shows a new approach to analysis of 3D printability of a hydrogel and also provides some suggestion for 3D printing of 3D scaffolds.

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“…According to the Prague formula 2dsinθ = nλ, the interlayer spacing will be increase with reduction of 2θ.The XRD spectrum of graphite exhibited a strong characteristic (0 0 2) peak at 26.6 °, and we could calculate the interlayer spacing of graphite is 3.35 Å. After the oxidation and exfoliation process, this peak disappear in the XPD pattern of the sample and a new peak is observed at 11.2 °, corresponding to the lattice of graphene oxide, which indicates that graphite was converted to graphene oxide [12]. The calculated interlayer spacing of graphene oxide is 7.89 Å, which is much larger than that of graphite.…”

Section: Xrd Analysismentioning

confidence: 86%

Preparation and Properties of Graphene Oxide Derivative Based Pulmonary Drug Delivery System

Liang¹,

Hu²,

Du³

et al. 2017

dtetr

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Abstract. GO-F127-RFP composite was prepared by none covalent bond of π-π-stacking, and the properties were investigated by Fourier transform infrared spectroscopy (FTIR), X-ray powder diffraction (XRD), field-emission scanning electron microscope (FE-SEM), transmission electron microscope (TEM), drug loading content, antibacterial activity and cytotoxicity assay. The results show that GO-F127-RFP composite is successfully prepared, and the carrier GO-F127 can load more drug RFP than other carriers, GO-F127-RFP composite has the antibacterial ability and GO-F127-RFP can lower the cytotoxicity of RFP, which make it a talent lung targeted system for curing tuberculosis (TB).

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Easy and green synthesis of reduced graphite oxide-based hydrogels

Cited by 252 publications

References 61 publications

Biomimetic superelastic graphene-based cellular monoliths

Biomimetic superelastic graphene-based cellular monoliths

Rheological study on 3D printability of alginate hydrogel and effect of graphene oxide

Preparation and Properties of Graphene Oxide Derivative Based Pulmonary Drug Delivery System

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