Establishing a productive heterogeneous catalyst based on silver nanoparticles supported on a crosslinked vinyl polymer for the reduction of nitrophenol

RSC Advances, Journal Year: 2024, Volume and Issue: 14(41), P. 30127 - 30139

Published: Jan. 1, 2024

The treatment of toxic nitrophenols in industrial wastewater is urgently needed from environmental, health, and economic points view. current study addresses the synthesis crosslinked vinyl polymer poly(acrylonitrile-

Language: Английский

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A novel defective PdMo bimetallene with atomic-scale cavities for highly efficient chemicals-assisted hydrogen production

Journal of Alloys and Compounds, Journal Year: 2024, Volume and Issue: 990, P. 174453 - 174453

Published: April 9, 2024

Language: Английский

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Design and Application of Hollow Flower-like Trimetallic Nanocrystals in Real-Time Catalytic Process Analysis

Crystals, Journal Year: 2025, Volume and Issue: 15(3), P. 246 - 246

Published: March 6, 2025

Hollow flower-like multi-metallic nanocrystals have attracted significant research attention due to their exceptional catalytic properties, which stem from high surface area-to-volume ratio and abundant active sites. Nevertheless, conventional synthesis methods for noble metal typically involve complex procedures or require harsh reaction conditions. In this work, we developed a facile environmentally benign strategy fabricating hollow flower-shaped trimetallic at ambient temperature. Our approach employs AgCl nanocubes, derived AgNO3 HAuCl4, as self-sacrificing templates. Through ascorbic acid-mediated reduction of precursors, successfully synthesized three distinct types nanocrystals: AuAgCu, AuAgPt, AuAgPd. Comprehensive characterization confirmed the well-defined morphology precise composition control as-prepared nanocrystals. The performance was systematically evaluated through in situ UV–vis spectroscopy monitoring 4-nitrophenylthiophenol reduction, revealing following activity trend: AuAgCu > AuAgPt This study not only provides versatile platform constructing sophisticated nanostructures but also offers valuable insights into structure–activity relationship catalysts.

Language: Английский

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Low-dimensional design of precious metal-based catalysts in fuel cells

Journal of Power Sources, Journal Year: 2025, Volume and Issue: 640, P. 236772 - 236772

Published: March 15, 2025

Language: Английский

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Molecule activation enabled by Mo dopants in nanoporous multi-component CuPd-based alloys for enhanced nitrophenol reduction reaction

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 357, P. 130198 - 130198

Published: Oct. 20, 2024

Language: Английский

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Crystalline/Amorphous Interface Engineering and d–sp Orbital Hybridization Synergistically Boosting the Electrocatalytic Performance of PdCu Bimetallene toward Formic Acid-Assisted Overall Water Splitting

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(47), P. 64797 - 64806

Published: Nov. 15, 2024

Advanced electrocatalysts capable of bifunctional catalysis for formic acid oxidation (FAOR) and hydrogen evolution reaction (HER) have garnered significant attention due to their exceptional energy efficiency. In this research, we meticulously designed a PdCu bimetallene characterized by numerous crystalline/amorphous (c/a) interfaces robust d–sp orbital hybridization, achieved integrating the p-block metalloid boron within matrix (B-PdCu-c/a). The B-PdCu-c/a revealed multitude surface atoms unsaturated defect sites, offering abundant catalytic active sites an optimized electronic structure. B2-PdCu-c/a exhibited best performance in FAOR HER, achieving mass activity 1106 mA mgcat–1 overpotential 52 mV, respectively. Significantly, two-electrode configuration B2-PdCu-c/a∥B2-PdCu-c/a attained low cell voltage 0.19 V at 10 cm–2 during acid-assisted overall water splitting. Density functional theory (DFT) calculations indicated that c/a interface engineering hybridization synergistically pristine bimetallene. This led elevation d-band center accumulation charge interface, which enhanced adsorption intermediates, facilitated C–H bond cleavage, balanced adsorption–desorption hydrogen, thereby improving electrocatalytic activities study not only presents viable strategy effectively tuning but also offers valuable insights into development electrocatalysts.

Language: Английский

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Engineering a Triphasic Co(OH)F/Co–S/CeO₂ Nanostructure Interface for Promoting Hydrazine-Assisted Overall Water Splitting

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 5, 2024

Synthesizing bifunctional electrocatalysts capable of concurrently accelerating the kinetics both hydrogen evolution reaction (HER) and hydrazine oxidation (HzOR) remains a formidable hurdle with academic research. Herein, nanoneedle-like electrocatalyst triphasic nanointerface, consisting crystalline Co(OH)F, amorphous Co–S, CeO2, was synthesized on nickel foam (NF) (Co(OH)F/Co–S/CeO2/NF) through an integrated hydrothermal–sulfidation–deposition strategy. Co(OH)F/Co–S/CeO2/NF not only possessed abundant active sites but also minimized charge-transfer resistance optimized electron distribution across interfaces, thus significantly kinetics. Then, it demonstrated overpotential 153 mV for HER low potential 80 HzOR at 10 mA cm–2, respectively. Employing as catalytic electrode, impressively cell voltage 0.20 V sufficient to achieve flow cm–2 during hydrazine-assisted overall water splitting. Density functional theory calculations elucidated that superior performance originated from balanced adsorption energy (ΔGH*) process altered rate-limiting step relatively barrier in HzOR. This research offers valuable insights into development sophisticated electrocatalysts, advancing large-scale deployment energy-conserving H2 production technologies.

Language: Английский

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