A critical review of COFs-based photocatalysis for environmental remediation

Environmental Research, Journal Year: 2025, Volume and Issue: unknown, P. 121166 - 121166

Published: Feb. 1, 2025

Language: Английский

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Interface Engineering with the Coupling of a 3D Porous Structure Enables MoP₂–NiCoP Heterostructure Nanosheets for Enhanced Alkaline Hydrogen Evolution Reaction

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(3), P. 1682 - 1691

Published: Jan. 8, 2024

One of the crucial parts electrochemically focused energy conversion and storage system is hydrogen evolution reaction. The further exploration electrocatalysts made nonprecious metals could help to bring technology closer industrialization. Here, we present an effective reaction (HER) electrocatalyst that employs hydrothermal phosphorization steps create three-dimensional (3D) porous MoP2–NiCoP heterostructure nanosheets on nickel foam (MoP2–NiCoP/NF). H2O-dissociation H-adsorption were effectively achieved due distinctive interface engineering between NiCoP MoP2, which functions as a channel for immediate electron transfer. Compared single-component MoP2 NiCoP, synergistic interaction heterogeneous components coupling 3D structure enables MoP2–NiCoP/NF exhibit satisfactory catalytic activity with ultralow overpotential 50 mV at 10 mA cm–2, close commercial Pt/C catalyst in alkaline media. More importantly, it exhibits good stability, ability be electrolyzed 1.0 M KOH electrolyte 24 h without significant change overpotential. This study offers directions design low-cost, high-activity, transition metal phosphides (TMPs)-based HER alternatives future practical applications.

Language: Английский

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Unique sandwich-cookie-like nanosheet array heterojunction bifunctional electrocatalyst towards efficient overall water/seawater splitting

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 669, P. 935 - 943

Published: May 11, 2024

Language: Английский

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Sustainable recycling of waste poly(vinylidene fluoride) and rational design of Janus membrane with superhydrophilic/hydrophobic asymmetric wettability for efficient separation of surfactant-stabilized water-in-oil and oil-in-water emulsions

Colloids and Surfaces A Physicochemical and Engineering Aspects, Journal Year: 2024, Volume and Issue: 684, P. 133237 - 133237

Published: Jan. 21, 2024

Language: Английский

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Nanocellulose-Supported Dual S-Scheme SnWO₄/Cu₂O/Ag₂WO₄ Heterojunction for Enhanced Photodegradation of Amoxicillin

ACS Omega, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 14, 2025

A dual S-scheme nanocellulose-based SnWO4/Cu2O/Ag2WO4 (NC-SCA) heterojunction photocatalyst was synthesized via ultrasonication followed by a hydrothermal method for the efficient photodegradation of amoxicillin (AMX). Under UV-vis light irradiation, NC-SCA exhibited an impressive 97.40% AMX degradation within 30 min, attributed to its improved optical absorption and superior charge migration. The characterization techniques, including XRD, FTIR, PL, spectroscopy, confirmed successful integration nanocellulose with SnWO4/Cu2O/Ag2WO4. XPS ESR analyses provided insights into migration mechanism heterojunction. Further, trapping experiments identified hydroxyl (•OH) superoxide radicals as primary reactive species. displayed specific surface area 115.9 m2/g, offering large active photodegradation. Operational parameters such dosage, pH, concentration were systematically optimized. high stability, retaining around 85% efficiency after seven cycles. This study presents innovative strategy designing high-performance photocatalysts addressing limitations conventional materials.

Language: Английский

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Magnetic MnFe₂O₄/ZIF-67 nanocomposites with high activation of peroxymonosulfate for the degradation of tetracycline hydrochloride in wastewater

RSC Advances, Journal Year: 2024, Volume and Issue: 14(11), P. 7528 - 7539

Published: Jan. 1, 2024

Advanced oxidation processes (AOPs) based on PMS have been used to degrade various refractory pollutants such as drugs, endocrine disruptors, dyes and perfluorinated compounds due their wide application range, mild reaction conditions, fast rate simple operation. In this study, tetracycline hydrochloride (TCH) was degraded method. Magnetic MnFe2O4/ZIF-67 nanocomposites were successfully prepared by a hydrothermal method, which combined the magnetic separation characteristics of MnFe2O4 with high catalytic activity ZIF-67 activate peroxymonosulfate (PMS) efficiently TCH. Satisfactory removal results obtained readily available material, 82.6% TCH removed in 15 min. The effect different conditions degradation investigated, optimal catalyst concentration determined be 0.1 g L-1 0.2 L-1, respectively, all had good effects at pH 5 10. XPS, impedance test radical quenching experiments investigate mechanism. showed that sulfate (SO4-˙) main active species process. addition, has cyclic stability, provides new idea for wastewater. It is worth mentioning also property other pollutants.

Language: Английский

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Photothermal and pyroelectric effects in hollow FeS2/CdS nanocomposites for enhanced photocatalytic hydrogen evolution

Surfaces and Interfaces, Journal Year: 2024, Volume and Issue: 49, P. 104370 - 104370

Published: April 17, 2024

Language: Английский

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N vacancies and OH/C=O co-modified g-C3N4 photoactivated peroxymonosulfate for the degradation of tetracycline: Synergistic promotion effect between excitons and carriers

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: unknown, P. 129943 - 129943

Published: Sept. 1, 2024

Language: Английский

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Performance Assessment of a New Flat Sepiolite Clay-Based Ultrafiltration Membrane for the Removal of Paracetamol and Indigo Blue Dyes from Two Synthetic Aqueous Solutions

Sustainability, Journal Year: 2024, Volume and Issue: 16(5), P. 1860 - 1860

Published: Feb. 23, 2024

In the last decade, development of a new generation membranes based on low-cost materials has been widely studied. These demonstrate significantly higher performance than conventional ceramic currently used in membrane separation technology. This work is focused flat UF composed completely sepiolite using uniaxial pressing method with dimensions 5.5 cm diameter and 3 mm thickness. The sintering temperatures were from 650 to 800 °C. Several properties, such as morphology, porosity, permeability, mechanical strength, chemical resistance, are investigated. results show that mean pore increased 40 150 nm when temperature increases °C At these temperatures, excellent strength 18 MPa 22 high resistance achieved. SEM revealed crack-free structure uniformly smooth surface. Permeability tests conducted dead-end filtration. demonstrated an improvement its water permeability 41 L·m−2·h−1·bar−1 750 efficiency sintered at 700 evaluated application removal paracetamol (PCT) indigo blue (IB) dye separately two synthetic aqueous solutions representing pharmaceutical textile sectors. Excellent almost 100% for both contaminants was observed ambient pressure bars. Membrane regeneration achieved through simple rinsing deionized water. According this finding, reversible fouling, which consistent fouling coefficient “FRR” value 90%.

Language: Английский

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Integrated Heterogeneous Engineering with the Vacancy Defect of Porous CoP_v-Mo_xP_v Nanosheets for an Accelerated Hydrogen Evolution Reaction

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(20), P. 9346 - 9354

Published: May 8, 2024

Electrochemical water splitting is a possible way of realizing sustainable and clean hydrogen production but challenging, because highly active durable electrocatalyst essential. In this work, we integrated heterogeneous engineering vacancy defect strategies to design fabricate heterostructure (CoPv-MoxPv/CNT) with abundant phosphorus vacancies attached carbon nanotubes (CNTs). The defects enabled the optimization electronic structure; thereby, electron-rich low-valent metal sites enhanced ability nonmetallic P capture proton H. Meanwhile, interface between bimetallic phosphides CNTs realized rapid electron transfer. addition, Co, Mo, species in electrocatalytic process exposed increased amounts featuring porous nanosheet structures, which facilitated adsorption reaction intermediates thus evolution performance. particular, optimized CoPv-MoxPv/CNT catalyst possesses an overpotential 138 mV at current density 10 mA cm–2 long-term stability for 24 h. This work offers insights possibilities exploration transition metal-based electrocatalysts through combining multiple synergistic strategies.

Language: Английский

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