Results 1 to 10 of about 24,942 (205)

Synthesis and Catalytic Activity for 2, 3, and 4-Nitrophenol Reduction of Green Catalysts Based on Cu, Ag and Au Nanoparticles Deposited on Polydopamine-Magnetite Porous Supports [PDF]

open access: yesNanomaterials, 2023
This work reports on the synthesis of nine materials containing Cu, Ag, Au, and Ag/Cu nanoparticles (NPs) deposited on magnetite particles coated with polydopamine (PDA).
Helen K. Brown   +6 more
doaj   +2 more sources

The Competition between 4-Nitrophenol Reduction and BH4 Hydrolysis on Metal Nanoparticle Catalysts [PDF]

open access: yesMolecules, 2023
Assessing competitive environmental catalytic reduction processes via NaBH4 is essential, as BH4− is both an energy carrier (as H2) and a reducing agent. A comprehensive catalytic study of the competition between the borohydride hydrolysis reaction (BHR,
Shalaka Varshney   +3 more
doaj   +2 more sources

Recent Progress on Covalent Organic Frameworks Supporting Metal Nanoparticles as Promising Materials for Nitrophenol Reduction [PDF]

open access: yesNanomaterials
With the utilization of nitrophenols in manufacturing various materials and the expansion of industry, nitrophenols have emerged as water pollutants that pose significant risks to both humans and the environment.
Mohammad Dinari   +5 more
doaj   +2 more sources

Magnetic alginate–carboxymethyl cellulose to immobilize copper nanoparticles as a green and sustainable catalyst for 4-nitrophenol reduction [PDF]

open access: yesHeliyon, 2023
In the present work, sustainable green catalysts with high activity, and excellent stability were prepared and thoroughly characterized by XRD, FT-IR, BET, VSM, SEM, EDX, HR-TEM, and TGA techniques.
Helmiyati Helmiyati   +2 more
doaj   +2 more sources

Simple Environmentally-Friendly Reduction of 4-Nitrophenol [PDF]

open access: yesCatalysts, 2020
The low molecular-mass organic compound 4-nitrophenol is involved in many chemical processes and is commonly present in soils and in surface and ground waters, thereby causing severe environmental impact and health risk. Several methods have been proposed for its transformation (bio and chemical degradation).
Albert Serra   +2 more
exaly   +3 more sources

Eclipta prostrata leaf extract derived carbon dots integrated TiO2 nanocomposites using for enhanced 4-nitrophenol reduction, antioxidant and antibacterial activity [PDF]

open access: yesDiscover Nano
Water contamination by organic pollutants and microbes causes serious environmental problem and risks the life of living things. 4-Nitrophenol is a major constituent of several industrial effluents can damage the health of human.
Ra’fat F. Affan
doaj   +2 more sources

Kinetic Analysis of 4-Nitrophenol Reduction by “Water-Soluble” Palladium Nanoparticles [PDF]

open access: yesNanomaterials, 2020
The most important model catalytic reaction to test the catalytic activity of metal nanoparticles is the reduction of 4-nitrophenol to 4-aminophenol by sodium borohydride as it can be precisely monitored by UV–vis spectroscopy with high accuracy.
Anas Iben Ayad   +3 more
doaj   +2 more sources

Advances in 4‑Nitrophenol Detection and Reduction Methods and Mechanisms: An Updated Review

open access: yesACS Omega
This review emphasizes the progress in identifying and eliminating para-nitrophenol (4-NP), a toxic organic compound. It covers various strategical methods and materials, including organic and inorganic nanomaterials, for detecting and reducing 4-NP. Detection techniques such as electrochemical methods. Optical fiber-based surface plasmon resonance and
Alan Omar Cardoso Juarez   +3 more
doaj   +3 more sources

The role of ruthenium in perovskite-type mixed oxide in the electrochemical degradation of 4-nitrophenol [PDF]

open access: yesTehnika, 2020
In this paper new perovskite-based electrode materials for 4-nitrophenol detection were characterized. Mixed oxides of pereovskite type with general molecular formula La0.7Sr0.3Cr1-XRuX03 (X= 0; 0.05) were synthesized by ceramic procedure. The results of
Mojović Zorica D.   +2 more
doaj   +1 more source

Cationic Polystyrene Resin Bound Silver Nanocomposites Assisted Fourier Transform Infrared Spectroscopy for Enhanced Catalytic Reduction of 4-Nitrophenol in Aqueous Medium

open access: yesChemistry, 2022
The present work reported a novel strategy to construct supported cationic-polystyrene-resin-bound silver nanocomposites for enhanced catalytic reduction of 4-nitrophenol in an aqueous medium.
Anushree Saha   +3 more
doaj   +1 more source

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