Simple and low-cost production of magnetite/graphene nanocomposites for heavy metal ions adsorption

Yan, Jessica; Li, Rui

doi:10.1016/j.scitotenv.2021.152604

Cited by 34 publications

(6 citation statements)

References 66 publications

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“…The reaction between carbon and O 2 is exothermic, and the reaction rate is fast. [119][120][121][122][123][124] Therefore, the reaction time is shortened when O 2 is added to the mixture to burn the intermediate products H 2 and CO and release heat. And the reaction of carbon with CO 2 and water vapor makes the porous structure highly developed.…”

Section: Preparation Of Biomass Derived Activated Carbonmentioning

confidence: 99%

Adsorption of heavy metal onto biomass-derived activated carbon: review

et al. 2023

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Section: Preparation Of Biomass Derived Activated Carbonmentioning

confidence: 99%

Adsorption of heavy metal onto biomass-derived activated carbon: review

et al. 2023

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“…The cost distribution of carbon-based materials is diversified, since the prices of GO, carbon nanotubes, graphene and biological carbon span several orders of magnitude [ 159 , 160 ]. However, the adsorption capacity of carbon-based materials is usually affected by temperature, which leads to dynamic changes in desorption balance and makes low reagent adsorption efficiency [ 161 , 162 , 163 ]. In addition, the surface of carbon materials combined with heavy metal ions may lose a large number of active adsorption sites, which causes the deactivation of adsorbent and is not easy to be restored again.…”

Section: Contribution Of Pretreatment Scheme For Ep Removalmentioning

confidence: 99%

Reduction of Ultrafiltration Membrane Fouling by the Pretreatment Removal of Emerging Pollutants: A Review

Zhang

Yuan

et al. 2023

Membranes

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Ultrafiltration (UF) processes exhibit high removal efficiencies for suspended solids and organic macromolecules, while UF membrane fouling is the biggest obstacle affecting the wide application of UF technology. To solve this problem, various pretreatment measures, including coagulation, adsorption, and advanced oxidation, for application prior to UF processes have been proposed and applied in actual water treatment processes. Previously, researchers mainly focused on the contribution of natural macromolecular pollutants to UF membrane fouling, while the mechanisms of the influence of emerging pollutants (EPs) in UF processes (such as antibiotics, microplastics, antibiotic resistance genes, etc.) on membrane fouling still need to be determined. This review introduces the removal efficiency and separation mechanism for EPs for pretreatments combined with UF membrane separation technology and evaluates the degree of membrane fouling based on the UF membrane’s materials/pores and the structural characteristics of the cake layer. This paper shows that the current membrane separation process should be actively developed with the aim of overcoming specific problems in order to meet the technical requirements for the efficient separation of EPs.

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“…Figure 20 i shows the FTIR profile of GEINs-BC, Fe 3 O 4 /G-AC-800, and the used Fe 3 O 4 /G-AC-800 samples. There are no apparent peaks showing heteroatoms on the surface, since heteroatoms could be removed due to the catalytic graphitization process beyond 800 °C [ 186 ].…”

Section: Applications Of Graphenementioning

confidence: 99%

“…XRD profile ( h ) of Fe 3 O 4 /G-AC-800 ( a ) before/after adsorption of Pb(II) solution with numerous pH values: pH = 3 ( b ), pH = 4 ( c ), pH = 5 ( d ), pH = 6 ( e ), and pH = 7 ( f ); FTIR profile of biochar ( i ) ( a ), GEINs-BC ( b ), and Fe 3 O 4 /G-AC-800 ( c ) before/after Pb(II) ions adsorption ( d ). Reproduced with permission from [ 186 ].…”

Section: Figurementioning

confidence: 99%

Graphene Synthesis Techniques and Environmental Applications

Abbas

Shinde²,

Abdelkareem³

et al. 2022

Materials

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Graphene is fundamentally a two-dimensional material with extraordinary optical, thermal, mechanical, and electrical characteristics. It has a versatile surface chemistry and large surface area. It is a carbon nanomaterial, which comprises sp2 hybridized carbon atoms placed in a hexagonal lattice with one-atom thickness, giving it a two-dimensional structure. A large number of synthesis techniques including epitaxial growth, liquid phase exfoliation, electrochemical exfoliation, mechanical exfoliation, and chemical vapor deposition are used for the synthesis of graphene. Graphene prepared using different techniques can have a number of benefits and deficiencies depending on its application. This study provides a summary of graphene preparation techniques and critically assesses the use of graphene, its derivates, and composites in environmental applications. These applications include the use of graphene as membrane material for the detoxication and purification of water, active material for gas sensing, heavy metal ions detection, and CO2 conversion. Furthermore, a trend analysis of both synthesis techniques and environmental applications of graphene has been performed by extracting and analyzing Scopus data from the past ten years. Finally, conclusions and outlook are provided to address the residual challenges related to the synthesis of the material and its use for environmental applications.

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Simple and low-cost production of magnetite/graphene nanocomposites for heavy metal ions adsorption

Cited by 34 publications

References 66 publications

Adsorption of heavy metal onto biomass-derived activated carbon: review

Adsorption of heavy metal onto biomass-derived activated carbon: review

Reduction of Ultrafiltration Membrane Fouling by the Pretreatment Removal of Emerging Pollutants: A Review

Graphene Synthesis Techniques and Environmental Applications

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