Preparation of a graphene-based magnetic nanocomposite for the removal of an organic dye from aqueous solution

Graphene-based multifunctional composites were prepared by encapsulating of magnetic ZnFe 2 O 4 @chitosan (ZnFe 2 O 4 @CS) particles into graphene oxide (GO) layers. The obtained ZnFe 2 O 4 @CS/ GO were characterized using scanning electron microscopy, X-ray diffraction, Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. Adsorption of basic fuchsin (BF) onto the ZnFe 2 O 4 @CS/GO was investigated using pH, adsorption time, initial BF concentration and temperature.Kinetic data and adsorption isotherms were better fitted by a pseudo-second-order kinetic model and

show abstract

“…The adsorption properties of the ZnFe 2 O 4 @CS/GO composites towards cationic dyes were investigated by using ZnFe 2 …”

Section: Discussionmentioning

confidence: 99%

Magnetic ZnFe₂O₄@chitosan encapsulated in graphene oxide for adsorptive removal of organic dye

Xiao

Zhong

et al. 2017

RSC Adv.

View full text Add to dashboard Cite

show abstract

“…They had no obvious magnetic hysteresis loop at 300 K, which indicates they are superparamagnetic. In a different synthesis, Wang et al [48] and 140 mg/g, respectively. For the removal of arsenic, Chandra et al [50] synthesized magnetic-graphene hybrids through chemical coprecipitation of Fe 2+ and Fe 3+ in the presence of graphene oxide, followed by reduction of graphene oxide using hydrazine hydrate.…”

Section: Graphene/semiconductor Hybridsmentioning

confidence: 99%

A brief review of graphene-based material synthesis and its application in environmental pollution management

2012

View full text Add to dashboard Cite

Graphene is an interesting two-dimensional carbon allotrope that has attracted considerable research interest because of its unique structure and physicochemical properties. Studies have been conducted on graphene-based nanomaterials including modified graphene, graphene/semiconductor hybrids, graphene/metal nanoparticle composites, and graphene-complex oxide composites. These nanomaterials inherit the unique properties of graphene, and the addition of functional groups or the nanoparticle composites on their surfaces improves their performance. Applications of these materials in pollutant removal and environmental remediation have been explored. From the viewpoint of environmental chemistry and materials, this paper reviews recent important advances in synthesis of graphene-related materials and their application in treatment of environmental pollution. The roles of graphene-based materials in pollutant removal and potential research are discussed. graphene, graphene-based material, environmental remediation, pollution Citation:Lü K, Zhao G X, Wang X K. A brief review of graphene-based material synthesis and its application in environmental pollution management. Chin Sci Bull, 2012Bull, , 57: 12231234, doi: 10.1007 Since the discovery of fullerene and carbon nanotubes (CNTs), research has focused on another allotrope of carbon, graphene. Graphene is a two-dimensional nanomaterial that has between one and ten layers of sp 2 -hybridized carbon atoms arranged in six-membered rings. It has many unique properties, including interesting transport phenomena, and high Young's modulus (approximately 1100 GPa) [ Importantly, it could be used in pollutant removal in environmental remediation, which has attracted increasing research in recent few years [5][6][7][8][9][10] and is the focus of this review. Aggregation of graphene layers determines the practical specific surface area, and modification of pristine graphene with other compounds will decrease the aggregation and increase the effective surface area. Graphene with a high specific surface area has a large enough area for pollutant removal and functionalization. Modification of the graphene surface with specific functional groups or nanoparticles could be used to increase the graphene interaction with organic and inorganic pollutants, so they can be removed efficiently from solution through catalytic adsorption or degradation. Based on this, various graphene-based materials have been synthesized; these have enhanced new properties compared to pristine graphene.In this paper, we review recent research advances in graphene-based nanomaterial synthesis and the application of these materials to environmental remediation. Potential future research on high-performance graphene-based nanomaterials for pollutant removal is discussed.

show abstract

“…The authors showed that a quick adsorption time coupled with a high removal efficiency makes the material suitable for water purication. 33 Recently, Fan et al showed that the adsorption capacity of methylene blue (MB) from polluted water could be improved by using a magnetic chitosan-rGO composite material. 59 The magnetic chitosan-rGO material shows an improved adsorption capacity for MB due to an electrostatic mechanism between the charged amino acid groups and MB.…”

Section: Water Remediation By Adsorptionmentioning

confidence: 99%

“…3D reduced graphene oxide (rGO) composite materials have also been employed as adsorbents for water purication; these materials have been shown to be effective in the removal of dyes as well as other organic contaminants. [32][33][34][35] 2.1.1 Adsorption of ionic pollutants. Ionic pollutants exist in polluted water in mainly two forms (i) metal ions such as arsenic, mercury, cadmium, chromium, cobalt, copper, selenium, lead and (ii) nonmetal ions such as uoride, phosphate, nitrate, and sulphide.…”

Section: Water Remediation By Adsorptionmentioning

confidence: 99%

Environmental applications using graphene composites: water remediation and gas adsorption

et al. 2013

View full text Add to dashboard Cite

This review deals with wide-ranging environmental studies of graphene-based materials on the adsorption of hazardous materials and photocatalytic degradation of pollutants for water remediation and the physisorption, chemisorption, reactive adsorption, and separation for gas storage. The environmental and biological toxicity of graphene, which is an important issue if graphene composites are to be applied in environmental remediation, is also addressed.

show abstract

Preparation of a graphene-based magnetic nanocomposite for the removal of an organic dye from aqueous solution

Cited by 324 publications

References 28 publications

Magnetic ZnFe₂O₄@chitosan encapsulated in graphene oxide for adsorptive removal of organic dye

Magnetic ZnFe₂O₄@chitosan encapsulated in graphene oxide for adsorptive removal of organic dye

A brief review of graphene-based material synthesis and its application in environmental pollution management

Environmental applications using graphene composites: water remediation and gas adsorption

Contact Info

Product

Resources

About

Preparation of a graphene-based magnetic nanocomposite for the removal of an organic dye from aqueous solution

Cited by 324 publications

References 28 publications

Magnetic ZnFe2O4@chitosan encapsulated in graphene oxide for adsorptive removal of organic dye

Magnetic ZnFe2O4@chitosan encapsulated in graphene oxide for adsorptive removal of organic dye

A brief review of graphene-based material synthesis and its application in environmental pollution management

Environmental applications using graphene composites: water remediation and gas adsorption

Contact Info

Product

Resources

About

Magnetic ZnFe₂O₄@chitosan encapsulated in graphene oxide for adsorptive removal of organic dye

Magnetic ZnFe₂O₄@chitosan encapsulated in graphene oxide for adsorptive removal of organic dye