Graphene nanosheets reduced by a multi-step process as high-performance electrode material for capacitive deionisation

Jia, Baoping; Zou, Linda

doi:10.1016/j.carbon.2012.01.051

Cited by 146 publications

(77 citation statements)

References 33 publications

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“…The rst step was using iron powder that is a mild and "green" reductant and the second step applied hydrazine. In order to obtain r-GO suspension, Jia et al 124 added sulphonation aer the rst step to introduce the negatively charged SO 3 À in r-GO akes and avoid an aggregation phenomenon, and the produced r-GO laminates by vacuum ltration displayed a high removal rate for NaCl (83.4%). Furthermore, Liu et al 74 successfully synthesized r-GO laminates by chemical reducing GO membranes and the authors reported that the interlayer spacing of the prepared r-GO sheets is merely 0.35 nm which exhibit a low Na + permeation of $0.2 mol h À1 m À2 .…”

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Separation and purification using GO and r-GO membranes

et al. 2018

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Many materials with varied characteristics have been used for water purification and separation applications. Recently discovered graphene oxide (GO), a two-dimensional derivative of graphene has been considered as a promising membrane material for water purification due to its excellent hydrophilicity, high water permeability, and excellent ionic/molecular separation properties. This review is focussed on the possible versatile applicability of GO membranes. It is also known that selective reduction of GO results in membranes with a pore size of $0.35 nm, ideally suited for desalination applications. This article presents the applicability of graphene-based membranes for multiple separation applications. This is indeed the first review article outlining a comparison of GO and r-GO membranes and discussing the suitability for applications based on the porosity of the membranes.

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Separation and purification using GO and r-GO membranes

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“…sugar [24], aluminum powder [25], zinc powder [26], iron powder [27] and heat treatment. Among them, the heat treatment is environmentally safer to a large extend.…”

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Highly efficient reduction of graphene oxide by sub/supercritical water and their application for thermal interface materials

Liu

2015

Applied Thermal Engineering

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“…The authors have been trying to simplify the oxygen groups in GO to reduce this complexity, for the benefit of highly sensitive electronics, by focusing on the sonication process to exfoliate GOs. Many studies have been surveyed, and we found that most of the experiments on GO exfoliation used the sonication method for various fixed time periods from 15 min to overnight [11][12][13][14][15].…”

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confidence: 99%

Changing the sp²Carbon Clusters in Graphene Oxide During Exfoliation

Ahn

2015

Transactions on Electrical and Electronic Materials

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The change of the chemical structure of graphene oxide (GO) was investigated by periodical sampling of GO during exfoliation by using a sonicator. A significant amount of GO was exfoliated during up to 10 hr of sonication. Raman and Fourier transform infrared spectroscopy revealed a continuous increase of the G/D or C=C/C=O peak ratio of GO, as the sonication time increases. The photoluminescence (PL) intensity of each GO sample also decreased as a function of the sonication time. PL excitation spectra with three major peaks indicate that the sizes of sp 2 carbon clusters were enlarged by longer sonication. In addition, new excitation at around 300 nm proves the existence of newly developed small clusters of sp 2 carbons as the sonication time increased.

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Graphene nanosheets reduced by a multi-step process as high-performance electrode material for capacitive deionisation

Cited by 146 publications

References 33 publications

Separation and purification using GO and r-GO membranes

Separation and purification using GO and r-GO membranes

Highly efficient reduction of graphene oxide by sub/supercritical water and their application for thermal interface materials

Changing the sp²Carbon Clusters in Graphene Oxide During Exfoliation

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Graphene nanosheets reduced by a multi-step process as high-performance electrode material for capacitive deionisation

Cited by 146 publications

References 33 publications

Separation and purification using GO and r-GO membranes

Separation and purification using GO and r-GO membranes

Highly efficient reduction of graphene oxide by sub/supercritical water and their application for thermal interface materials

Changing the sp2Carbon Clusters in Graphene Oxide During Exfoliation

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Changing the sp²Carbon Clusters in Graphene Oxide During Exfoliation