Polymer-Supported Heterogeneous Fenton Catalysts for the Environmental Remediation of Wastewater

Molecules, Год журнала: 2024, Номер 29(10), С. 2188 - 2188

Опубликована: Май 8, 2024

Materials based on polymer hydrogels have demonstrated potential as innovative Fenton catalysts for treating water. However, developing these polymer-supported with robust stability presents a significant challenge. This paper explores the development and application of heterogeneous environmental remediation wastewater, emphasizing enhancement metal incorporation into improved efficiency. The study begins an introduction to process its relevance wastewater treatment. It further delves specifics catalysts, focusing iron oxide, copper complexes/nanoparticles, ruthenium key components. synthesis methods employed prepare are discussed, highlighting approaches achieve substantial incorporation. Operational parameters such catalyst dosage, pollutant concentration, effect pH efficiency thoroughly examined. catalytic performance is evaluated, providing insights effectiveness in degrading pollutants. Recent developments field reviewed, showcasing advancements design application. also addresses reusability critical factors their practical remediation. Environmental applications explored, demonstrating addressing various Conclusions offers future perspectives, underlining ongoing challenges opportunities field, importance research enhance efficacy sustainability

Язык: Английский

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Enhancing stability and immobilization techniques for graphitic carbon nitride in photocatalytic applications

Journal of Molecular Liquids, Год журнала: 2024, Номер 405, С. 125005 - 125005

Опубликована: Май 13, 2024

Emerging contaminants from urban and industrial sources require effective water treatment photocatalysis using graphitic carbon nitride (GCN) is emerging as a promising solution. This polymer, devoid of metals in its structure, exhibits properties similar to titanium oxide, the quintessential traditional photocatalyst. work aims optimize application GCN photocatalysts, emphasizing role photocatalytic processes by improving for visible light-assisted photodegradation process assessing removal selected pollutant, Rhodamine B. Initially, catalyst precursor (urea, melamine ratio 1:1 them) synthesis was evaluated. obtained urea yielded better higher purity catalyst. In addition, through acid treatment, slight improvements material were verified, such an increase crystallinity active sites. modified enhanced process, achieving complete B 30 min. A significant improvement chemical stability also observed, maintaining nearly entire efficacy after 10 cycles. However, several operational problems observed due powder form GCN, and, thus, requesting development efficient immobilized catalysts. Therefore, three techniques (encapsulation, electrospinning, composite) evaluated variations distribution their influence on ascertained. From this evaluation, it can be concluded that electrospinning technique, polyacrylonitrile polymer (PAN) fibres, generated highly porous, hydrophilic with excellent floatability. allowed maximizing radiation exposure during 85 % reduction concentration 90 Among other remarkable properties, high reusability when incorporated into PAN remained chemically physically stable, retaining more than dye efficiency 4

Язык: Английский

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Chitosan/Polyvinyl Alcohol/g-C3N4 Nanocomposite Film: An Efficient Visible Light-Responsive Photocatalyst and Antimicrobial Agent

Processes, Год журнала: 2025, Номер 13(1), С. 229 - 229

Опубликована: Янв. 15, 2025

Biopolymer-based nanocomposite film is an efficient material for addressing the increasing levels of pollutants in environment and also production antimicrobial packing due to its good film-forming properties, biodegradability, minimal environmental impact. In particular, chitosan/polyvinyl alcohol/g-C3N4 (CS/PVA/g-C3N4) films with different weight percentages PVA were prepared using simple methodologies characterized XRD, TGA, FT-IR, DSC, FE-SEM, EDX, elemental mapping analysis. The XRD FT-IR results validated formation. FE-SEM images showed smooth surface composite without any wrinkles; smoothness increased increases loading, morphologies largely unchanged. EDX analysis presence uniform dispersion g-C3N4 within film. photocatalytic activity CS/PVA/g-C3N4 was assessed by degradation rhodamine B dye (RhB) acetophenone under direct sunlight irradiation. exhibited superior efficiency toward RhB compared bare polymeric material. order CS/PVA (1.0) (95.34%, 33.33%) > (1.5) (93.18%, 31.31%) (0.5) (93.02%, 29.29%) (90.69%, 26.26%) (87.56%, 24%), respectively. Furthermore, tested against E. coli, Pseudomonas sps., Klesiella Enterococcus (1.5)/g-C3N4 offered better properties than other materials. conclusion, these biopolymer-based nanocomposites are highly provide a promising path development various biodegradable remediation antibacterial applications.

Язык: Английский

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Multilevel immobilized CNT/SCN purification beads and the removal efficiency over TC-HCl/clay composite pollutant in the underwater environment

Journal of Environmental Sciences, Год журнала: 2024, Номер 155, С. 13 - 24

Опубликована: Ноя. 28, 2024

Язык: Английский

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