Graphene oxide-based materials for efficient removal of heavy metal ions from aqueous solution: A review

Liu, Xiaolu; Ma, Ran; Wang, Xiangxue; Ma, Yan; Yang, Yongping; Li, Zhuang; Zhang, Sai; Jehan, Riffat; Chen, Jianrong

doi:10.1016/j.envpol.2019.05.050

Cited by 402 publications

(121 citation statements)

References 127 publications

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“…In the last years, carbon-based nanostructured materials, such as graphene and its derivatives [155,156], fullerenes, activated carbons [26,157], biochar [158,159], carbon nanotubes (CNTs) [13,160], and nanoparticles [161], have been of great interest because of their unique structural, electrical, and mechanical properties, offering promising opportunities for photocatalytic applications (Figure 7).…”

Section: Carbon-based Hybrid Nanomaterialsmentioning

confidence: 99%

Photosensitive Hybrid Nanostructured Materials: The Big Challenges for Sunlight Capture

2020

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Solar radiation is becoming increasingly appreciated because of its influence on living matter and the feasibility of its application for a variety of purposes. It is an available and everlasting natural source of energy, rapidly gaining ground as a supplement and alternative to the nonrenewable energy feedstock. Actually, an increasing interest is involved in the development of efficient materials as the core of photocatalytic and photothermal processes, allowing solar energy harvesting and conversion for many technological applications, including hydrogen production, CO2 reduction, pollutants degradation, as well as organic syntheses. Particularly, photosensitive nanostructured hybrid materials synthesized coupling inorganic semiconductors with organic compounds, and polymers or carbon-based materials are attracting ever-growing research attention since their peculiar properties overcome several limitations of photocatalytic semiconductors through different approaches, including dye or charge transfer complex sensitization and heterostructures formation. The aim of this review was to describe the most promising recent advances in the field of hybrid nanostructured materials for sunlight capture and solar energy exploitation by photocatalytic processes. Beside diverse materials based on metal oxide semiconductors, emerging photoactive systems, such as metal-organic frameworks (MOFs) and hybrid perovskites, were discussed. Finally, future research opportunities and challenges associated with the design and development of highly efficient and cost-effective photosensitive nanomaterials for technological claims were outlined.

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Section: Carbon-based Hybrid Nanomaterialsmentioning

confidence: 99%

Photosensitive Hybrid Nanostructured Materials: The Big Challenges for Sunlight Capture

2020

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“…The effect of pH value and ion strength on U VI elimination by GO@LDHa re showni nF igure 3A,B.T he pH-dependenta nd ion-strength-independent uptake of U VI confirmed that the major interaction mechanism was inner-sphere surfacecomplexation. [76,77] Sorptionisotherms of GO@LDH indicated that the removal processw as dominated by monolayer coverage.L inghue tal. employed surface complexation modeling (SCM)t os tudy the removalo fU VI by LDH ( Figure 3C)a nd LDH/GO ( Figure 3D).…”

Section: Removal Of Radionuclidesmentioning

confidence: 99%

Recent Advances in Composites of Graphene and Layered Double Hydroxides for Water Remediation: A Review

Pang

Wang

et al. 2019

Chemistry An Asian Journal

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159

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Composites of layered double hydroxides( LDHs) and graphene (G) are excitingn anomaterials because of their uniques urface structures and excellent physicochemical properties. Such materials offer the advantages of both components,t hat is, the large surfacea rea and ample functional groups of graphene and the outstanding layered structure and ion-exchangeability of layered double hydroxides, whilst effectively avoiding the coagulation of graphene and the instability of pristine layered double hydroxides,a nd they have been widelyi nvestigated for applications in water remediation. This Minireview begins by summarizing the most common methods for the synthesis of G@LDH composites, including hydrothermalt reatment, coprecipitation, and in situ growth. Then, we review the adsorption and catalytic ability of G@LDH materials in the removal of contaminants from water,s uch as heavy metal ions, radionuclides, dyes, and other organic pollutants. Finally,w ed iscusst he challenges and offer ap erspective on the directions of future research of G@LDH composites.

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“…Therefore, it cannot be used as a sorbent for the purification of aquatic media. The sorption interaction mechanisms for the GO and the heavy metals studied in this work are quite widely described in the modern scientific literature …”

Section: Comparison To the Previous Studiesmentioning

confidence: 99%

Removal of Copper(II) and Zinc(II) Ions in Water on a Newly Synthesized Polyhydroquinone/Graphene Nanocomposite Material: Kinetics, Thermodynamics and Mechanism

et al. 2019

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An effective polyhydroquinone/graphene nanocomposite was developed to remove Cu(II) and Zn(II) metal ions in water. The composite nanomaterial was characterized by FT‐IR, SEM, TEM, XRD, Raman spectroscopy, and thermo‐gravimetry. The surface of the material was heterogeneous with 10–20 nm particle size. The adsorption capacity of Cu(II) and Zn(II) metal ions were 40.9 and 24.8 μgg−1, respectively. The sorption followed Langmuir, Freundlich, Tempkin and D−Rs models. The process of adsorption was successfully described by pseudo‐second‐order model, thereby indicating the chemical nature of the main adsorption mechanism. Thus, it can be argued that the adsorption proceeded in a mixed‐diffusion mode, with a significant contribution of a large number of high affinity active sites located on the adsorbent surface. The uptake time was 60 and 15 minutes for Cu(II) and Zn(II) at pH 6.0; indicating fast hydro‐friendly nature and making the method applicable to solve water pollution in real life problems. Therefore, the reported method may be used to remove Cu(II) and Zn(II) metal ions in any water resource.

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Graphene oxide-based materials for efficient removal of heavy metal ions from aqueous solution: A review

Cited by 402 publications

References 127 publications

Photosensitive Hybrid Nanostructured Materials: The Big Challenges for Sunlight Capture

Photosensitive Hybrid Nanostructured Materials: The Big Challenges for Sunlight Capture

Recent Advances in Composites of Graphene and Layered Double Hydroxides for Water Remediation: A Review

Removal of Copper(II) and Zinc(II) Ions in Water on a Newly Synthesized Polyhydroquinone/Graphene Nanocomposite Material: Kinetics, Thermodynamics and Mechanism

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