Removal of heavy metals in aquatic environment by graphene oxide composites: a review

Zhang, Quan; Hou, Qinxuan; Huang, Guanxing; Fan, Q.

doi:10.1007/s11356-019-06683-w

Cited by 88 publications

(34 citation statements)

References 187 publications

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“…Among the different potential absorbents, many researchers have employed GO composites and their derivates to absorb different pollutants, such as heavy metals and pharmaceutical compounds [ 37 , 38 ]. Heavy metals like lead (Pb 2+ ) and Cadmium (Cd 2+ ) have been removed successfully using Alginate-GO Composite Aerogel [ 38 ].…”

Section: Introductionmentioning

confidence: 99%

Predicting the Adsorption of Amoxicillin and Ibuprofen on Chitosan and Graphene Oxide Materials: A Density Functional Theory Study

et al. 2021

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The occurrence, persistence, and accumulation of antibiotics and non-steroidal anti-inflammatory drugs (NSAIDs) represent a new environmental problem due to their harmful effects on human and aquatic life. A suitable absorbent for a particular type of pollutant does not necessarily absorb other types of compounds, so knowing the compatibility between a particular pollutant and a potential absorbent before experimentation seems to be fundamental. In this work, the molecular interactions between some pharmaceuticals (amoxicillin, ibuprofen, and tetracycline derivatives) with two potential absorbers, chitosan and graphene oxide models (pyrene, GO-1, and coronene, GO-2), were studied using the ωB97X-D/6-311G(2d,p) level of theory. The energetic interaction order found was amoxicillin/chitosan > amoxicillin/GO-1 > amoxicillin/GO-2 > ibuprofen/chitosan > ibuprofen/GO-2 > ibuprofen/GO-1, the negative sign for the interaction energy in all complex formations confirms good compatibility, while the size of Eint between 24–34 kcal/mol indicates physisorption processes. moreover, the free energies of complex formation were negative, confirming the spontaneity of the processes. The larger interaction of amoxicillin GOs, compared to ibuprofen GOs, is consistent with previously reported experimental results, demonstrating the exceptional predictability of these methods. The second-order perturbation theory analysis shows that the amoxicillin complexes are mainly driven by hydrogen bonds, while van der Waals interactions with chitosan and hydrophobic interactions with graphene oxides are modelled for the ibuprofen complexes. Energy decomposition analysis (EDA) shows that electrostatic energy is a major contributor to the stabilization energy in all cases. The results obtained in this work promote the use of graphene oxides and chitosan as potential adsorbents for the removal of these emerging pollutants from water.

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Section: Introductionmentioning

confidence: 99%

Predicting the Adsorption of Amoxicillin and Ibuprofen on Chitosan and Graphene Oxide Materials: A Density Functional Theory Study

et al. 2021

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“…In the last two decades, the manufacture and use of a wide variety of nanoparticles and their composites, e.g., mesoporous silica materials (MSMs) 7, 8, layered double hydroxides 9, 10, metal‐organic frameworks 11, 12, carbon nanotubes 13, 14, graphene‐based materials 15, 16, and covalent organic frameworks 17, 18, especially in environmental applications such as adsorption and extraction, have made significant progress and development on both laboratory and industrial scales. Among the aforementioned nanoparticles, MSMs have attracted great interest because of their remarkable and unique features including designability (pore size, morphology, degree of hydrophilicity or hydrophobicity), functionalizable surface (salinization with diverse silane coupling agents), large surface area, high pore volume, ordered structure, high thermal stability, commercially and available starting materials, and nontoxic and environmentally friendly nature of silica 19–22.…”

Section: Introductionmentioning

confidence: 99%

In situ Polymerized FDU‐12/Poly(methyl methacrylate) and FDU‐12/polyamide 6 Nanocomposites for Cd²⁺ Adsorption

Zabihi

Jamshidian²,

Soltani

et al. 2021

Chem Eng & Technol

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Large‐pore mesoporous silica FDU‐12 was synthesized and functionalized with silane coupling agents bearing methacrylate and diamino groups. Diamino‐functionalized FDU‐12/polyamide 6 and methacrylate‐functionalized FDU‐12/poly(methyl methacrylate) nanocomposites were prepared via in situ polymerization approach. These two synthesized nanocomposites were used as potential adsorbents for the removal of Cd2+ cations from aqueous media. The impact of different adsorption factors affecting the adsorption process was investigated, and isotherm and kinetic studies were conducted to gain a better understanding of adsorption mechanisms involved in the removal process of Cd2+ by the adsorbents. Experimental and computational results demonstrated that the adsorbents have acceptable performance for Cd2+ uptake.

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“…Additionally, these polymers show a natural high sorption ability for different pollutants [ 23 ]; thus, this combination may result in a synergistic behavior for improved adsorption of several pollutants in water. A widely accessible natural biopolymer obtained from the alkaline deacetylation of chitin, chitosan (CH), is hydrophilic, environmentally friendly, and nontoxic and has been used as an agent for the removal of dyes and heavy metals from contaminated waters [ 24 ]. For the specific case of heavy metal(loid)s, the adsorption onto GO–CH-based materials has been studied for the removal of Cr [ 25 , 26 , 27 , 28 , 29 , 30 ], Cu [ 25 , 31 , 32 , 33 , 34 ], Pb [ 25 , 31 , 32 , 35 , 36 , 37 ], As [ 32 , 38 ], Au, and Pd [ 39 ] or U [ 28 ].…”

Section: Introductionmentioning

confidence: 99%

Green Graphene–Chitosan Sorbent Materials for Mercury Water Remediation

et al. 2020

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The development of new graphene-based nanocomposites able to provide synergistic effects for the adsorption of toxic heavy metals in realistic conditions (environment) is of higher demand for future applications. This work explores the preparation of a green nanocomposite based on the self-assembly of graphene oxide (GO) with chitosan (CH) for the remediation of Hg(II) in different water matrices, including ultrapure and natural waters (tap water, river water, and seawater). Starting at a concentration of 50 μg L–1, the results showed that GO–CH nanocomposite has an excellent adsorption capacity of Hg (II) using very small doses (10 mg L–1) in ultrapure water with a removal percentage (% R) of 97 % R after only two hours of contact time. In the case of tap water, the % R was 81.4% after four hours of contact time. In the case of river and seawater, the GO–CH nanocomposite showed a limited performance due the high complexity of the water matrices, leading to a residual removal of Hg(II). The obtained removal of Hg(II) at equilibrium in river and seawater for GO–CH was 13% R and 7% R, respectively. Our studies conducted with different mimicked sea waters revealed that the removal of mercury is not affected by the presence of NO3– and Na+ (>90% R of Hg(II)); however, in the presence of Cl–, the mercury removal was virtually nonexistent (1% R of Hg(II)), most likely because of the formation of very stable chloro-complexes of Hg(II) with less affinity towards GO–CH.

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Removal of heavy metals in aquatic environment by graphene oxide composites: a review

Cited by 88 publications

References 187 publications

Predicting the Adsorption of Amoxicillin and Ibuprofen on Chitosan and Graphene Oxide Materials: A Density Functional Theory Study

Predicting the Adsorption of Amoxicillin and Ibuprofen on Chitosan and Graphene Oxide Materials: A Density Functional Theory Study

In situ Polymerized FDU‐12/Poly(methyl methacrylate) and FDU‐12/polyamide 6 Nanocomposites for Cd²⁺ Adsorption

Green Graphene–Chitosan Sorbent Materials for Mercury Water Remediation

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Removal of heavy metals in aquatic environment by graphene oxide composites: a review

Cited by 88 publications

References 187 publications

Predicting the Adsorption of Amoxicillin and Ibuprofen on Chitosan and Graphene Oxide Materials: A Density Functional Theory Study

Predicting the Adsorption of Amoxicillin and Ibuprofen on Chitosan and Graphene Oxide Materials: A Density Functional Theory Study

In situ Polymerized FDU‐12/Poly(methyl methacrylate) and FDU‐12/polyamide 6 Nanocomposites for Cd2+ Adsorption

Green Graphene–Chitosan Sorbent Materials for Mercury Water Remediation

Contact Info

Product

Resources

About

In situ Polymerized FDU‐12/Poly(methyl methacrylate) and FDU‐12/polyamide 6 Nanocomposites for Cd²⁺ Adsorption