Functionalized graphene sheets for arsenic removal and desalination of sea water

Mishra, Ashish Kumar; Ramaprabhu, Sundara

doi:10.1016/j.desal.2011.01.038

Cited by 305 publications

(116 citation statements)

References 37 publications

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“…It was reported that the GO membrane had anti-biofouling capability due to its hydrophilicity and electrostatic repulsion characteristics including superior mechanical strength and water permeability. Mishra and Ramaprabhu (2011) used functionalized graphene sheets for arsenic removal and desalination of sea water and reported that maximum adsorption capacities, using Langmuir isotherm, for arsenate, arsenite and sodium were found to be nearly 142, 139 and 122 mg/g, respectively. Gollavelli et al (2013) synthesized smart magnetic graphene (SMG) by microwave irradiation of graphene oxide (GO) and ferrocene precursors.…”

Section: Graphene Oxide-water Treatmentmentioning

confidence: 99%

Removal of heavy metals and pollutants by membrane adsorption techniques

2018

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Application of polymeric membranes for the adsorption of hazardous pollutants may lead to the development of next-generation reusable and portable water purification appliances. Membranes for membrane adsorption (MA) have the dual function of membrane filtration and adsorption to be very effective to remove trace amounts of pollutants such as cationic heavy metals, anionic phosphates and nitrates. In this review article, recent progresses in the development of MA membranes are surveyed. In addition, recent progresses in the development of advanced adsorbents such as nanoparticles are summarized, since they are potentially useful as fillers in the host membrane to enhance its performance. The future directions of R&D in this field are also shown in the conclusion section.

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Section: Graphene Oxide-water Treatmentmentioning

confidence: 99%

Removal of heavy metals and pollutants by membrane adsorption techniques

2018

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“…Due to their large theoretical specific surface area, remarkable electronic properties and high ability of modification, potential environmental applications of G as 0008-6223/$ -see front matter Ó 2012 Elsevier Ltd. All rights reserved. http://dx.doi.org/10.1016/j.carbon.2012.08.024 superior adsorbent have been recognized for removal of organic and inorganic contaminants from water and gases [6][7][8][9][10][11][12][13][14]. For example, it was found that sulfonated G was one of the most effective adsorbents for naphthalene and 1-naphthol [6,7].…”

Section: Introductionmentioning

confidence: 99%

“…In addition, G nanosheets also have high adsorption affinity for heavy metals, where the amount of active surface sites on G is an important factor influencing the adsorption of heavy metal ions. Previous works on arsenic adsorption onto magnetite reduced GO composites and G sheets [10,11], and on Hg(II) adsorption to polypyrrole-reduced GO composites showed that G composites have a strong adsorption affinity for metal ions [12,13].…”

Section: Introductionmentioning

confidence: 99%

Adsorption characteristics of 1,2,4-trichlorobenzene, 2,4,6-trichlorophenol, 2-naphthol and naphthalene on graphene and graphene oxide

Pei¹,

Li²,

Sun³

et al. 2013

Carbon

320

165

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“…[17,18] These functional ligands can realize or facilitate the filter functions of pristine graphene membranes. Many researches on modified porous graphene have been conducted which provide inspirations to the design of nano-devices based on porous graphene, particularly in desalination.…”

Section: Introduction：mentioning

confidence: 99%

Ion and water transport in charge-modified graphene nanopores

Qiu

Chen

et al. 2015

Chinese Phys. B

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Abstract：Porous graphene has high mechanical strength and atomic layer thickness, which make it a promising material for material separation and biomolecule sensing.Electrostatic interactions between charges in aqueous solution are a kind of strong long-range interaction which may have great influence on the fluid transport through nanopores. Here, molecular dynamics simulations were conducted to investigate ion and water transport through a 1.05-nm-in-diameter monolayer graphene nanopore with its edge charge-modified. From the results, it is found that the nanopores are selective to counterions when they are charged. As the charge amount increases, the total ionic currents show an increase-decrease profile while the co-ion currents monotonously decrease. The co-ions rejection can reach 75% and 90% when the nanopores are negatively and positively charged, respectively. Cl − ions current increases and reaches a plateau, and Na + current decreases with the charge amount in the systems they act as counterions. Besides, the charge modification can enhance the water transport through nanopores obviously. This is mainly due to the ion selection PACS:82.20. Wt, 89.40.Cc, 92.05.Hj, 68.65.Pq.

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Functionalized graphene sheets for arsenic removal and desalination of sea water

Cited by 305 publications

References 37 publications

Removal of heavy metals and pollutants by membrane adsorption techniques

Removal of heavy metals and pollutants by membrane adsorption techniques

Adsorption characteristics of 1,2,4-trichlorobenzene, 2,4,6-trichlorophenol, 2-naphthol and naphthalene on graphene and graphene oxide

Ion and water transport in charge-modified graphene nanopores

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