Pd NPs decorated on crosslinked sodium alginate modified Iron-based metal-organic framework Fe(BTC) as a green multifunctional catalyst for the oxidative amidation

Nanoscale Advances, Год журнала: 2024, Номер 6(14), С. 3612 - 3623

Опубликована: Янв. 1, 2024

The primary objective of this investigation was to develop a new nanocatalyst that could produce amides by oxidative amidation benzyl alcohol, thereby reducing its environmental harm.

Язык: Английский

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Chitosan-grafted salicylaldehyde/algae composite for methyl violet dye removal: adsorption modeling and optimization

International Journal of Phytoremediation, Год журнала: 2024, Номер 26(8), С. 1348 - 1358

Опубликована: Март 8, 2024

In this study, a hydrothermal approach was employed to graft chitosan (Chit)/algae (ALG) with salicylaldehyde (SA), resulting in the synthesis of biocomposite named salicylaldehyde-based Schiff base/algae (Chit-SA/ALG). The main objective effectively remove methyl violet (MV), an organic dye, from aqueous solutions. adsorption performance Chit-SA/ALG toward MV investigated detail, considering effects three factors: (A) dose (ranging 0.02 0.1 g/100 mL), (B) pH 4 10), and (C) time 10 120 min). Box–Behnken design (BBD) utilized for experimental analysis. results exhibited good fit both pseudo-second-order kinetic model Freundlich isotherm, suggesting their suitability describing process on Chit-SA/ALG. maximum capacity Chit-SA/ALG, as calculated by Langmuir model, found be 115.6 mg/g. remarkable onto can primarily attributed electrostatic forces between well involvement various interactions such n–π, π–π, H-bond interactions. This research demonstrates that exhibits promising potential highly efficient adsorbent removal dyes water systems.

Язык: Английский

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Recent Application of Clay-Based Heterogeneous Catalyst in Organic Reactions

Journal of Inorganic and Organometallic Polymers and Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 13, 2025

Язык: Английский

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Development of nanoscale zero-valent iron embedded on polyaniline reinforced with sodium alginate hydrogel microbeads for effective adsorption of arsenic from apatite soil leachate water

International Journal of Biological Macromolecules, Год журнала: 2025, Номер 304, С. 140841 - 140841

Опубликована: Фев. 8, 2025

Язык: Английский

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Green synthesis of thiourea derivatives from nitrobenzenes using Ni nanoparticles immobilized on triazine-aminopyridine-modified MIL-101(Cr) MOF

Scientific Reports, Год журнала: 2023, Номер 13(1)

Опубликована: Авг. 10, 2023

Abstract Nanohybrid metal–organic frameworks (MOF) have recently been considered next-generation catalysts regarding their unique features like large surface-to-volume ratio, tailorable geometry, uniform pore sizes, and homogeneous distribution of active sites. In this report, we address the triazine-aminopyridine-modified 3D Cr-centred MOF MIL-101(Cr)-NH 2 following a post-synthetic modification approach. The excellent chelating ability triazine-aminopyridine was applied to immobilize Ni ions over host matrix MOF. as-synthesized material physicochemically characterized using various analytical techniques FT-IR, electron microscopy, EDS, elemental mapping, XRD, ICP-OES. Subsequently, has catalytically employed in synthesizing new thiourea derivatives by reacting nitrobenzene phenyl isocyanate. catalyst isolated centrifugation recycled 6 consecutive runs without momentous loss its reactivity.

Язык: Английский

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Cu(ii) immobilized on poly(guanidine-sulfonamide)-functionalized Bentonite@MgFe₂O₄: a novel magnetic nanocatalyst for the synthesis of 1,4-dihydropyrano[2,3-c]pyrazole

RSC Advances, Год журнала: 2023, Номер 13(16), С. 10667 - 10680

Опубликована: Янв. 1, 2023

In this paper, we aim at synthesizing a new nanocomposite material in which bentonite acts as nucleation site for MgFe2O4 nanoparticles precipitation the attendance of an external magnetic field (MgFe2O4@Bentonite). Moreover, poly(guanidine-sulfonamide), novel kind polysulfonamide, was immobilized on surface prepared support (MgFe2O4@Bentonite@PGSA). Finally, efficient and environment-friendly catalyst (containing nontoxic copper, MgFe2O4@Bentonite) by anchoring copper ion MgFe2O4@Bentonite@PGSAMNPs. The synergic effect (MNPs), bentonite, PGSA, species observed while conducting control reactions. synthesized Bentonite@MgFe2O4@PGSA/Cu, characterized using energy-dispersive X-ray spectroscopy (EDAX), scanning electron microscopy (SEM), transmission (TEM), thermogravimetric analysis (TGA), diffraction (XRD), Fourier-transform infrared (FT-IR) spectroscopy, applied highly heterogeneous to synthesize 1,4-dihydropyrano[2,3-c] pyrazole yielding up 98% 10 minutes. Excessive yield, quick reaction time, water solvent, turning waste wealth, recyclability are important advantages present work.

Язык: Английский

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Influence of lignocellulosic composition in biomass waste on the microstructure and dye adsorption characteristics of microwave-assisted ZnCl2 activated carbon

Biomass Conversion and Biorefinery, Год журнала: 2023, Номер 14(14), С. 16681 - 16697

Опубликована: Май 10, 2023

Язык: Английский

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Fabrication of a Mixed Matrix Membrane Using Nitrogen-Enriched Nanoporous Polytriazine for Removal of Pb²⁺ from Aqueous Solution

ACS Applied Nano Materials, Год журнала: 2024, Номер 7(2), С. 1775 - 1785

Опубликована: Янв. 4, 2024

An important concern for the environment is toxicity of lead ions in aqueous solutions. In present research, a nitrogen-enriched nanoporous polytriazine (NENP) synthesized (SABET ∼ 700 m2 g–1), which works well as an adsorbent to remove Pb2+ from water bodies. batch adsorption mode, 5 mg NENP having high nitrogen content (∼52%) capable reducing concentration 1.6 ppm <10 ppb within 10 min, at 298 K and pH 7. The maximum capacity 537 g–1 estimated min 600 solution Meanwhile, mixed matrix membrane designated N-MMM was fabricated using active characterized by field emission scanning electron microscopy (FE-SEM), atomic force (AFM), N2 sorption analysis. cross-flow setup, with flux 16.2 L m–2 h–1 can treat containing provide safe drinking (<10 WHO) 300 permissible limit (WHO) 2 bar transmembrane pressure velocity 1L/M. exhibits remarkably removal efficiency 99.4% good retention ability up 3 consecutive cycles. These findings will be beneficial cost-effective production metal-free heteroatom-enriched materials efficient

Язык: Английский

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Effect of conductive polyaniline on the cationic and anionic dye adsorption properties of amphoteric alginate/chitosan composite foams

Journal of environmental chemical engineering, Год журнала: 2024, Номер 12(2), С. 112532 - 112532

Опубликована: Март 18, 2024

Язык: Английский

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Fabrication of blueberry anthocyanins–rich gels based on the apricot polysaccharides with different esterification degrees

International Journal of Biological Macromolecules, Год журнала: 2024, Номер 273, С. 133154 - 133154

Опубликована: Июнь 13, 2024

Язык: Английский

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