Fabrication of reduced graphene oxide membranes for water desalination

Huang, Hsin‐Hui; Joshi, Rakesh; Silva, K. Kanishka H. De; Badam, Rajashekar; Yoshimura, Masamichi

doi:10.1016/j.memsci.2018.10.085

Cited by 223 publications

(108 citation statements)

References 45 publications

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“…Hydrothermal method of reduction has advantages over chemical process such as simplicity, scalability low defects contents [10], and production of RGO in a more controllable route [11]. It is also one of the most attractive green method which uses water as the only chemical and involves a single step thereby making it possible to tailor the functional groups by adjusting the temperature and the time of reaction [12] but some of the defects are explosion of the structure if not slowly heated and large energy consumption [8].…”

Section: Introductionmentioning

confidence: 99%

The comparative analyses of reduced graphene oxide (RGO) prepared via green, mild and chemical approaches

et al. 2019

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In this work, the reducing power of three reductants: hydrazine (chemical), ascorbic acid (mild) and the extract of Amaranthus hybridus (green) were investigated. Graphene oxide (GO) was synthesized by modified Hummer's method and was reduced by hydrazine (RGO-HZ), ascorbic acid (RGO-AA) and the extract of Amaranthus hybridus (RGO-AH). GO, RGO-HZ, RGO-AA and RGO-AH were characterized using Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy and ultraviolet visible spectrometry. The FTIR spectra showed the presence of oxygen functionality groups in GO which were reduced in all RGOs. The morphological properties showed that RGOs sheets were exfoliated forming clusters with roughened surfaces while the optical energy band gaps of 2.19, 3.90, 3.60, and 3.20 eV were estimated for GO, RGO-HZ, RGO-AA and RGO-AH respectively. It can be concluded that the three reductants demonstrated good reducing capacities. The ascorbic acid and the extract of Amaranthus hybridus, apart from being environmentally friendly, can also be good substitutes for the dangerous chemical hydrazine.

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Section: Introductionmentioning

confidence: 99%

The comparative analyses of reduced graphene oxide (RGO) prepared via green, mild and chemical approaches

et al. 2019

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“…[25][26][27] Clays, nanocomposites, carbon nanotubes and nanoparticles are frequently used as llers to improve anti-wetting properties and increase water vapour transport. [28][29][30][31][32][33] Recently, graphene platelets (GNPs), graphene oxide (GO) and reduced graphene oxide (rGO), have been regarded as interesting materials to increase the productivity of membranes [34][35][36][37][38][39][40][41] for water desalination purposes. Defective graphene and derivatives have been oen proposed for membrane distillation operations due to their attractive hydrophobic and anti-wetting nature, anti-fouling properties and selective sorption of water vapours [34][35][36][37][38][39][40][41][42][43][44][45][46][47] .…”

Section: Introductionmentioning

confidence: 99%

A few-layer graphene for advanced composite PVDF membranes dedicated to water desalination: a comparative study

et al. 2020

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“…These results are consistent with those reported in the literature. For the pure rGO sample, the featural peak at 25.2° indicates the complete reduction of the GO sheets [37]. However, no featural peak belonging to the rGO can be observed from the different LLO samples.…”

Section: Resultsmentioning

confidence: 99%

Well-Wrapped Li-Rich Layered Cathodes by Reduced Graphene Oxide towards High-Performance Li-Ion Batteries

Liu

Wang

et al. 2019

Molecules

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Layered lithium-rich manganese oxide (LLO) cathode materials have attracted much attention for the development of high-performance lithium-ion batteries. However, they have suffered seriously from disadvantages, such as large irreversible capacity loss during the first cycle, discharge capacity decaying, and poor rate performance. Here, a novel method was developed to coat the surface of 0.4Li2MnO3∙0.6LiNi1/3Co1/3Mn1/3O2 cathode material with reduced graphene-oxide (rGO) in order to address these drawbacks, where a surfactant was used to facilitate the well-wrapping of rGO. As a result, the modified LLO (LLO@rGO) cathode exhibits superior electrochemical performance including cycling stability and rate capability compared to the pristine LLO cathode. In particular, the LLO@rGO with a 0.5% rGO content can deliver a high discharge capacity of 166.3 mAh g−1 at a 5C rate. The novel strategy developed here can provide a vital approach to inhibit the undesired side reactions and structural deterioration of Li-rich cathode materials, and should be greatly useful for other cathode materials to improve their electrochemical performance.

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Fabrication of reduced graphene oxide membranes for water desalination

Cited by 223 publications

References 45 publications

The comparative analyses of reduced graphene oxide (RGO) prepared via green, mild and chemical approaches

The comparative analyses of reduced graphene oxide (RGO) prepared via green, mild and chemical approaches

A few-layer graphene for advanced composite PVDF membranes dedicated to water desalination: a comparative study

Well-Wrapped Li-Rich Layered Cathodes by Reduced Graphene Oxide towards High-Performance Li-Ion Batteries

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