Recent advances in graphene-derived materials for biomedical waste treatment

Obayomi, Kehinde Shola; Lau, Sie Yon; Mayowa, Ibitogbe Enoch; Danquah, Michael K.; Zhang, Jianhua; Chiong, Tung; Meunier, Louise; Rahman, Mohammad Mahmudur

doi:10.1016/j.jwpe.2022.103440

Cited by 28 publications

(6 citation statements)

References 172 publications

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“…There are various treatment processes for the conversion of bio-wastes into value-added materials, such as hydrothermal treatment, pyrolysis, and exfoliation techniques. [11][12][13][14] Bio-derived functional materials have different application areas, such as separation processes, drug delivery or tissue engineering applications, development of energy storage devices, and environmental remediation studies. [15][16][17][18][19][20] Development of these bio-derived functional materials for various applications would provide environmentally friendly protection advantages.…”

Section: An Overview Of Bio-wastesmentioning

confidence: 99%

Recent Advances in Wastewater Treatment by Utilisation of Bio-waste-derived Hydroxyapatite

Avşar

2024

Kem. ind. (Online)

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Hydroxyapatite (HAp) is basically calcium phosphate and the main inorganic component in natural bone and teeth structure. Animal bones and eggshells are mass-generated bio-wastes, and their calcium-rich structure makes them suitable precursors for bioactive HAp synthesis through biomimetic mineralisation. Industrial wastewater discharge is a worldwide alarming problem due to high-capacity industrial-scale processes, and their adverse effects on human health and environment will be encountered long term. Adsorption is the most widely used separation process in wastewater treatment, in which HAp particles can be used as bio-adsorbents for wastewater treatment processes due to their bioactive nature. Utilisation of bio-waste-derived HAp particles for wastewater treatment applications would be a step towards sustainable development and circular economy concepts. It promotes the reuse and recycle rate of bio-wastes as bio-adsorbents through an effective waste management strategy and increases the circularity of the material in the production chain. This study offers a brief overview of articles published in 2023 on the use of bio-waste-derived HAp particles for wastewater treatment.

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Section: An Overview Of Bio-wastesmentioning

confidence: 99%

Recent Advances in Wastewater Treatment by Utilisation of Bio-waste-derived Hydroxyapatite

Avşar

2024

Kem. ind. (Online)

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“…The global market for the manufacture of cutting-edge composite materials has undergone a substantial change since the invention of graphene. Depending on the material utilized, top-down approaches are cost-effective [117]. This technique produces graphene or modified graphene sheets by separating, cleaving, peeling, or exfoliating graphite or its derivatives like graphite oxide and reduced graphite oxide [118].…”

Section: Significance Of Graphene-based Nanocompositesmentioning

confidence: 99%

Exploring the Versatility of Transition Metal-Infused Graphene/CdS Nanocomposites for Cutting-Edge Nanotechnology Applications: An Innovative Synergy Beyond Boundaries

Disilwa Seth

2023

tjjpt

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This review paper highlights the potential of graphene nanocomposites for various applications in nanotechnology and focuses on the properties and applications of the graphene/CdS nanocomposite, which has shown enhanced properties and finds applications in diverse industries. This work discusses the incorporation of transition metals such as Ni, Cu, Zn, Mn, and Fe into graphene/CdS nanocomposites and their resultant properties, including increased surface activities, optronics, mechanical properties, thermal stability, and photocatalytic activity. This review provides valuable insights into the potential of transition metal-doped graphene/CdS nanocomposites for a wide range of applications.

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“…In recent years, many of researchers have expressed interest in the fabrication of more effective ZnO hybrid materials for wastewater treatment through loading them on other materials, including zeolites, clays, metal-organic framework (MOF), carbon-based materials, and metal oxides [24][25][26][27][28]. Prior studies have demonstrated that loading ZnO on activated carbon (AC) enhanced adsorption capacity because the resultant composite material allows enhanced interaction between the composite material and the dyes due to the presence of abundant active sites [29][30][31][32]. Recently, Yu et al, [33] fabricated ZnO/biochar nanocomposites via simple ball milling with excellent photocatalytic and adsorption properties towards methylene blue (MB) under UV light with 95.19% removal efficiency.…”

Section: Introductionmentioning

confidence: 99%

In-Situ Hydrothermal Fabrication of ZnO-Loaded GAC Nanocomposite for Efficient Rhodamine B Dye Removal via Synergistic Photocatalytic and Adsorptive Performance

Obayomi,

Lau,

Xie

et al. 2024

Preprint

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In this work, zinc oxide (ZnO)/ granular activated carbon (GAC) composites at different ZnO concentration (0.25M-ZnO@GAC, 0.5M-ZnO@GAC, and 0.75M-ZnO@GAC) were prepared by an in-situ hydrothermal method and demonstrated synergistic photocatalytic degradation and ad-sorption of Rhodamine B (RhB). The thermal stability, morphological structure, elemental com-position, crystallographic structure, and textural properties of developed catalysts were charac-terized by thermal gravimetric analysis (TGA/DTG), scanning electron microscopy equipped with energy dispersive-x-ray (SEM-EDS), x-ray diffraction (XRD), and Brunauer–Emmett–Teller (BET) analysis. Successful loading of ZnO onto GAC was confirmed by SEM-EDS and XRD analysis. The BET surface areas of GAC, 0.25M-ZnO@GAC, 0.5M-ZnO@GAC, and 0.75M-ZnO@GAC were 474 m2/g, 450 m2/g, 453 m2/g, and 421 m2/g, respectively. The decrease in GAC could be attributed to the successful loading of ZnO on the GAC surface. Notably, 0.5M-ZnO@GAC exhibited the best photocatalytic degradation efficiency of 82% and 97% under UV-A and UV-C light over 120 min, attributed to improved crystallinity and visible light absorption. The photocatalytic degradation parameters revealed that lowering the RhB concentration, raising the catalyst dosage and pH be-yond the point of zero charge (PZC) would favor the RhB degradation. Photocatalytic reusability was demonstrated over 5 cycles. Scavenger tests revealed that the hydroxyl radicals (•OH), su-peroxide radicals (O2−•), and photoinduced hole (h+) radicals play a major role during the RhB degradation process. Based on the TOC results, the RhB mineralization efficiency of 79.1% was achieved by 0.5M-ZnO@GAC. Additionally, GAC exhibited a strong adsorptive performance towards RhB with adsorption capacity and RhB removal of 487.1 mg/g and 99.5% achieved within 90 min equilibrium time. The adsorption characteristics were best described by pseu-do-second-order kinetics, suggesting chemical adsorption. This research offers a new strategy for the development of effective photocatalyst materials with potential for wider wastewater treat-ment applications.

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Recent advances in graphene-derived materials for biomedical waste treatment

Cited by 28 publications

References 172 publications

Recent Advances in Wastewater Treatment by Utilisation of Bio-waste-derived Hydroxyapatite

Recent Advances in Wastewater Treatment by Utilisation of Bio-waste-derived Hydroxyapatite

Exploring the Versatility of Transition Metal-Infused Graphene/CdS Nanocomposites for Cutting-Edge Nanotechnology Applications: An Innovative Synergy Beyond Boundaries

In-Situ Hydrothermal Fabrication of ZnO-Loaded GAC Nanocomposite for Efficient Rhodamine B Dye Removal via Synergistic Photocatalytic and Adsorptive Performance

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