Photocatalytic and toxicity assessment of alginate reinforced ZnO-g-C3N4 photocatalyst for the degradation of methylene blue – A sustainable strategy

International Journal of Biological Macromolecules, Journal Year: 2025, Volume and Issue: 298, P. 139935 - 139935

Published: Jan. 16, 2025

Language: Английский

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A tandem approach for the synthesis of 1-phenyl-pyrazolo-quinolinones by Fe ₃ O ₄ @MWCNT nanocomposite as heterogeneous catalyst

Green Chemistry Letters and Reviews, Journal Year: 2025, Volume and Issue: 18(1)

Published: Jan. 10, 2025

A simple, facile, efficient and highly promising protocol for the synthesis of 1-phenyl-pyrazolo-quinolinone analogs using Fe3O4@MWCNT nano-composite as a catalyst via Knoevenagel–Michael reaction has been developed. The use several advantages, like simple preparation, inexpensive, handling, high stability. It was synthesized from MWCNT iron oxide thoroughly characterized BET, PXRD, SEM, TEM, TGA analysis. All target molecules were confirmed by various spectroscopic techniques such 1H-NMR, 15N-NMR, 13C-NMR, HRMS. present work unveils environmentally friendly approach synthesizing phenyl-pyrazolo-quinolinone scaffolds with higher yields (93–97%), selectivity, efficiency, mild conditions, no need chromatographic separation, short times, recovery reuse minimum seven cycles is possible without causing notable reduction in product yields. method complies green chemistry principles presents feasible alternative to previously documented techniques.

Language: Английский

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Revolutionizing Green Catalysis: A Novel Amla Seeds Derived Biochar Modified g-C3N4·SO3H Catalyst for Sustainable and Versatile Synthesis of Bis-Indoles

Nanoscale Advances, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Catalysis plays a vital role in green chemistry by improving process efficiency, reducing waste, and minimizing environmental impact. A biochar-modified g-C3N4·SO3H (BCNSA) catalyst was developed using biochar derived from amla seed powder CNSA. CNSA synthesized via the reaction of g-C3N4 with chlorosulfonic acid. Both components were combined, pyrolyzed, purified, comprehensively characterized FTIR, XRD, FE-SEM, EDX, elemental mapping, TGA, DTA studies to confirm successful synthesis structural integrity. The demonstrated exceptional efficiency synthesizing bis-indole derivatives through reactions between substituted indoles (indole, 1-methyl indole, 6-chloro indole) carbonyl-containing compounds, including isatins (isatin, 7-(trifluoromethyl)isatin, 5-bromo isatin, 5-fluoro isatin), aldehydes, cyclo-ketones, dimedone, acetophenones. These carried out under simplified conditions water as solvent, promoting sustainability versatility. total 21 products within 5-45 minutes, achieving yields 80-98% showcasing catalyst's outstanding performance. Furthermore, method scaled up gram-level synthesis, metrics evaluated for all products, highlighting economic benefits this approach.

Language: Английский

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

Processes, Journal Year: 2025, Volume and Issue: 13(1), P. 229 - 229

Published: Jan. 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.

Language: Английский

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Strategic design of 2D graphitic carbon nitride nanosheets anchored with CuFe2O4 nanoparticles for efficient photoanodes in DSSC applications

Diamond and Related Materials, Journal Year: 2025, Volume and Issue: unknown, P. 112091 - 112091

Published: Feb. 1, 2025

Language: Английский

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A focused review on photocatalytic potential of graphitic carbon nitride (g-C3N4) based metal oxide-nanostructures for effective remediation of most overused antibiotics

Journal of Environmental Management, Journal Year: 2024, Volume and Issue: 373, P. 123759 - 123759

Published: Dec. 20, 2024

Language: Английский

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Electrochemical performance of 3D CuO nanoflowers and g-C3N4/CuO/PAN composite synthesized by thermal decomposition method

Diamond and Related Materials, Journal Year: 2024, Volume and Issue: 151, P. 111782 - 111782

Published: Nov. 17, 2024

Language: Английский

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Polydopamine functionalized graphitic carbon nitride nanosheets as acid stimuli-responsive nanocarrier of 2-mercaptobenzimidazole for intelligent anticorrosion coatings

Progress in Organic Coatings, Journal Year: 2024, Volume and Issue: 197, P. 108782 - 108782

Published: Sept. 5, 2024

Language: Английский

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Graphitic Carbon Nitride: A Novel Two-Dimensional Metal-Free Carbon-Based Polymer Material for Electrochemical Detection of Biomarkers

C – Journal of Carbon Research, Journal Year: 2024, Volume and Issue: 10(4), P. 98 - 98

Published: Nov. 27, 2024

Graphitic carbon nitride (g-C3N4) has gained significant attention due to its unique physicochemical properties as a metal-free, two-dimensional, carbon-based polymeric fluorescent substance composed of tris-triazine-based patterns with slight hydrogen content and carbon-to-nitrogen ratio 3:4. It forms layered structures like graphite demonstrates exciting unusual properties, making g-C3N4 widely used in nanoelectronic devices, spin electronics, energy storage, thermal conductivity materials, many others. The biomedical industry greatly benefited from excellent optical, electrical, characteristics, such abundance on Earth, affordability, vast surface area, fast synthesis. Notably, the heptazine phase displays stable electronic bands. Another quality this semiconductor material is fluorescence property, which also helpful preparing biosensors. Based g-C3N4, electrochemical biosensors have provided better biocompatibility, higher sensitivity, low detection limits, nontoxicity, selectivity, versatility functionalization for delicate identification target analytes. This review covers latest studies using efflorescent graphitic fabricate various biomarkers. Carbon nitrides been reported possess electroactivity massive surface-to-volume ratio, hydrogen-bonding functionality, thus allowing electrochemical-based, highly sensitive, selective platforms an entire array Considering preceding information, addresses fundamentals background numerous synthesis pathways. Furthermore, importance sensing diverse biomarkers emphasized article. discusses current status challenges future perspectives nitride-based sensors, open paths toward their practical application aspects clinical diagnostics.

Language: Английский

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Silica Supported Boric Acid (H₃BO₃‐SiO₂): An Extravagant Catalyst for One‐Pot Transesterification‐Biginelli Reaction Under Solvent‐Free Condition

ChemistrySelect, Journal Year: 2024, Volume and Issue: 9(46)

Published: Dec. 1, 2024

Abstract Present study aimed to develop an eco‐friendly protocol for the synthesis of diverse structure 3,4‐dihydropyrimidin‐2(1H)‐one/thione via one‐pot transesterification–multicomponent reaction using silica‐supported boric acid (H 3 BO ‐SiO 2 ) as catalyst. This trans‐esterification commercially available β ‐ketoesters such methyl or ethyl acetoacetate followed by multicomponent reactions with aldehydes and urea thiourea under solvent‐free conditions at 100 °C afforded structures DHPM's. The catalyst used in can be recycled without significant loss its activity which was verified comparing SEM‐EDX micrographs freshly prepared one. notable features present are ease‐of‐use, wide substrate scope, mild conditions, most simplified work‐up process, less hazardous catalysts so on. Thus, our opinion, methodology is a superior more practical greener route production dihydropyrimidinones/thiones biological importance.

Language: Английский

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