Removal of Rhodamine B by g-C3N4/Co3O4/MWCNT composite stabilized in hydrogel via the synergy of adsorption and photocatalysis under visible light

Shafiee, Mohammad Reza Mohammad; Parhizkar, Janan; Radfar, Sasan

doi:10.1007/s10854-019-01607-3

Cited by 16 publications

(4 citation statements)

References 46 publications

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“…Reproduced with permission. [ 377 ] Copyright 2019, Springer Nature. C) Schematic representation of the stepwise preparation of PCH20 and the RhB photo‐degradation under solar light; PL spectra of all samples; effect of pH and photocatalytic performance of all samples on photodegradation of RhB; reusability characterization of PCH20 for five cycles.…”

Section: Adsorptive and Photocatalytic Performance Of Various Hydroge...mentioning

confidence: 99%

“…[381,382] Additionally, the separation of g-C 3 N 4 hydrogel nanocomposites after the application is straightforward. Shafiee et al [377] studied the adsorptionassisted photocatalytic potential of the g-C 3 N 4 /Co 3 O 4 /MWCNT nanocomposite stabilized in resorcinol formaldehyde hydrogel towards organic pollutant (RhB) degradation in water. They compared the surface area of all synthesized nanocomposites (hydrogel, g-C 3 N 4 in hydrogel, Co 3 O 4 in hydrogel, g-C 3 N 4 / Co 3 O 4 in hydrogel, and g-C 3 N 4 /Co 3 O 4 /MWCNT in hydrogel).…”

Section: Cnts and Other Carbonaceous Materials-based Hydrogel Nanocom...mentioning

confidence: 99%

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Hydrogel Nanocomposite Adsorbents and Photocatalysts for Sustainable Water Purification

Kumar

Gusain

Pandey

et al. 2022

Adv Materials Inter

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Anthropogenic actions, environmental catastrophes, urbanization, population growth, and industrialization generate toxic pollutants in water bodies. The most pollutants are heavy metals and metalloids, dyes, volatile organic compounds, pharmaceuticals, pesticides, radionuclides, aromatic hydrocarbons, oils, polycyclic aromatic hydrocarbons, microbes/pathogens, and microplastics that can be in different forms and concentrations. [3][4][5] Globally, approximately 2 million tons of pollutants from agriculture, industrial, and sewage waste are released into water streams, which pose severe health risks and cause the deaths of more than 1400 people every day. [6] Thus, developing efficient, economical, environmentalfriendly, and scalable technologies for the purification of wastewater and seawater is urgently required. To fulfill the shortage of clean water, affordable technologies can be used to transform unconventional water reserves (such as wastewater, rainfall, seawater, and brackish water) into potable water. Recently, numerous water treatment technologies, including coagulation/flocculation, filtration, chemical precipitation, aerobic/anaerobic processing, biological treatment, electrochemically precipitation, advanced oxidation processing, membrane separation, ion-exchange, adsorption, solar/thermal distillation/evaporation, crystallization, and photocatalysis, have emerged to offer practical solutions to water pollution management. [7][8][9][10][11][12][13][14] Among them, adsorption and photocatalysis technologies have garnered significant attention from the research community due to their cost-effectiveness, high performance, Hydrogels have been employed for water purification applications, but their performance and strength are unsatisfactory for widespread adoption. Recently, hydrogel nanocomposites have been proposed to resolve the inherent challenges faced by hydrogels for water treatment. This review comprehensively analyzes hydrogel nanocomposites for water treatment using adsorbent and photocatalysis techniques. The structure, classification, and tunable synthesis methods of hydrogels are explained. Further, how hydrogels can be incorporated with functional nanoparticles (NPs) and can be used as templates/precursors for developing advanced 3D architectures, including the formation of hydrogel nanocomposite beads and 3D printing objects are discussed. Finally, the structure-property relationships of hydrogel nanocomposites are critically reviewed by considering introductory gelation chemistry, such as swelling characteristics, mechanical properties, stimuli-responsiveness, and ionic/electronic conduction. The extensive cross-linking of polymer chains with NPs offers high mass/charge transport, high surface areas, and enhanced polymer-water interactions to achieve high-performing adsorbents and photocatalysts. Several motivating examples of emerging NP-containing hydrogel nanocomposites for use in adsorbents and photocatalysis have been discussed. Such efforts validated the excellent technological pote...

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Section: Adsorptive and Photocatalytic Performance Of Various Hydroge...mentioning

confidence: 99%

Section: Cnts and Other Carbonaceous Materials-based Hydrogel Nanocom...mentioning

confidence: 99%

Hydrogel Nanocomposite Adsorbents and Photocatalysts for Sustainable Water Purification

Kumar

Gusain

Pandey

et al. 2022

Adv Materials Inter

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“…They obtained a maximum removal of 87% within 120 min. 19 In another work, Zhao et al developed a titanium dioxide-embedded sodium alginate and acrylamide composite film for dye degradation with a tensile strength of 0.316 MPa. The film shows reusability for up to 5 cycles.…”

Section: Introductionmentioning

confidence: 99%

A robust and highly compressible polyacrylamide co-polymer hydrogel developed through g-C₃N₄ initiated photopolymerisation and its photocatalytic activity towards dye removal

Ahmed,

Saikia,

Ray

et al. 2024

New J. Chem.

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“…Biosorption, involving the use of polysaccharide and protein materials from animal or vegetable origin appropriately formulated into different structures [11,12], is a widely explored technology for the removal of organic dyes since it couples the cost-effectiveness and high efficiency of sorption methods with the biocompatibility and sustainability of natural polymers allowing for a reduction environmental impact [13][14][15]. Hydrogels based on natural polymers are emerging as highly effective absorbers due to their ability to store a large amount of water and the possibility to introduce tailored chemical functionalities for the selective interaction with organic contaminants [16,17]. On the other hand, such materials suffer from some severe drawbacks limiting their applicability in industrial practice, mainly related to their poor mechanical properties [18,19].…”

Section: Introductionmentioning

confidence: 99%

Carbon Nanotubes Hybrid Hydrogels for Environmental Remediation: Evaluation of Adsorption Efficiency under Electric Field

et al. 2021

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The performance of Carbon Nanotubes hybrid hydrogels for environmental remediation was investigated using Methylene Blue (MB), Rhodamine B (RD), and Bengal Rose (BR) as model contaminating dyes. An acrylate hydrogel network with incorporated CNT was synthesized by photo-polymerization without any preliminary derivatization of CNT surface. Thermodynamics, isothermal and kinetic studies showed favorable sorption processes with the application of an external 12 V electric field found to be able to influence the amount of adsorbed dyes: stronger interactions with cationic MB molecules (qexp and qexp12 of 19.72 and 33.45 mg g−1, respectively) and reduced affinity for anionic RD (qexp and qexp12 of 28.93 and 13.06 mg g−1, respectively) and neutral BR (qexp and qexp12 of 36.75 and 15.85 mg g−1, respectively) molecules were recorded. The influence of pH variation on dyes adsorption was finally highlighted by reusability studies, with the negligible variation of adsorption capacity after five repeated sorption cycles claiming for the suitability of the proposed systems as effective sorbent for wastewater treatment.

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Removal of Rhodamine B by g-C3N4/Co3O4/MWCNT composite stabilized in hydrogel via the synergy of adsorption and photocatalysis under visible light

Cited by 16 publications

References 46 publications

Hydrogel Nanocomposite Adsorbents and Photocatalysts for Sustainable Water Purification

Hydrogel Nanocomposite Adsorbents and Photocatalysts for Sustainable Water Purification

A robust and highly compressible polyacrylamide co-polymer hydrogel developed through g-C₃N₄ initiated photopolymerisation and its photocatalytic activity towards dye removal

Carbon Nanotubes Hybrid Hydrogels for Environmental Remediation: Evaluation of Adsorption Efficiency under Electric Field

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Removal of Rhodamine B by g-C3N4/Co3O4/MWCNT composite stabilized in hydrogel via the synergy of adsorption and photocatalysis under visible light

Cited by 16 publications

References 46 publications

Hydrogel Nanocomposite Adsorbents and Photocatalysts for Sustainable Water Purification

Hydrogel Nanocomposite Adsorbents and Photocatalysts for Sustainable Water Purification

A robust and highly compressible polyacrylamide co-polymer hydrogel developed through g-C3N4 initiated photopolymerisation and its photocatalytic activity towards dye removal

Carbon Nanotubes Hybrid Hydrogels for Environmental Remediation: Evaluation of Adsorption Efficiency under Electric Field

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A robust and highly compressible polyacrylamide co-polymer hydrogel developed through g-C₃N₄ initiated photopolymerisation and its photocatalytic activity towards dye removal