Metal‐Organic Framework Templated Z‐Scheme ZnIn₂S₄/Bi₂S₃ Hierarchical Heterojunction for Photocatalytic H₂O₂ Production from Wastewater

Small, Год журнала: 2024, Номер unknown

Опубликована: Май 15, 2024

Abstract Metal‐organic framework derived materials received a lot of attention due to their significant benefits in photocatalytic reactions. In this work, Z‐scheme ZnIn 2 S 4 /Bi 3 hierarchical heterojunction is first developed by one‐pot method using CAU‐17 as template. The specific preparation endows an intimate interface contact between these two monomers, and CAU‐17‐derived Bi possesses high surface area porosity, resulting efficient charge separation O capture. Thus, for H production from the reduction reaction, can achieve yield 995 µmol L −1 pure water ambient air under visible light, 4.5 times that , respectively. addition, tetracycline solution, degrade with degradation rate 95% photocatalysis, at same time, final 1223 reached. Similarly, yields are also obtained wastewater containing o ‐nitrophenol, acid golden yellow, or red, pollutants effectively degraded. This work reveals potential metal‐organic framework‐derived well provides insights into green synthesis treatment.

Язык: Английский

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Empowering wastewater treatment with step scheme heterojunction ternary nanocomposites for photocatalytic degradation of nitrophenol

Scientific Reports, Год журнала: 2025, Номер 15(1)

Опубликована: Янв. 26, 2025

The ongoing challenge of water pollution necessitates innovative approaches to remove organic contaminants from wastewater. In this work, new two-dimensional S-scheme heterojunction photocatalysts Bi2O3/CdS and MoS2/Bi2O3/CdS that are intended for the effective photocatalytic destruction 4-nitrophenol, a dangerous pollutant, synthesized characterized. Utilizing solvothermal method, successfully generated these ternary nanocomposites, which were characterized through various techniques including X-ray diffraction (XRD), scanning electron microscopy (SEM), photoelectron spectroscopy (XPS), high resolution transmission electronmicroscopy (HRTEM), Brunauer-Emmett-Telle (BET) diffuse reflectance (DRS). Our results demonstrated achieved an 86% degradation rate while composite exhibited exceptional performance, achieving nearly complete (99%) within 120 min under visible light irradiation. Most importantly improved activity originated release internal electric field in heterojunction. This enhanced is attributable synergistic effects heterojunctions facilitate more charge separation generation with OP RP confirmed synthesis using S-scheme. further by XPS, DRS, XPS-VB photocurrent response. These findings highlight promising application advanced real-world wastewater treatment processes, offering sustainable solution combat pollution.

Язык: Английский

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Heteropoly blue-modified ultrathin bismuth oxychloride nanosheets with oxygen vacancies for efficient photocatalytic nitrogen fixation in pure water

Journal of Colloid and Interface Science, Год журнала: 2024, Номер 677, С. 610 - 619

Опубликована: Июль 31, 2024

Язык: Английский

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Oxygen Vacancy Engineering and Constructing Built‐In Electric Field in Fe‐g‐C₃N₄/Bi₂MoO₆ Z‐Scheme Heterojunction for Boosting Photo‐Fenton Catalytic Degradation Performance of Tetracycline

Small, Год журнала: 2024, Номер unknown

Опубликована: Сен. 9, 2024

Abstract A novel Fe‐g‐C 3 N 4 /Bi 2 MoO 6 (FCNB) Z‐scheme heterojunction enriched with oxygen vacancy is constructed and employed for the photo‐Fenton degradation of tetracycline (TC). The 2% FCNB demonstrates prominent catalytic performance mineralization efficiency TC wastewater, showing activity 8.20 times greater than that pure photocatalytic technology. Density‐functional theory (DFT) calculations experiments confirm formation Fe‐N sites induces spin‐polarization in material, difference Fermi energy levels results built‐in electric field at contact interface, which facilitates continuous generation migration photogenerated carriers to address issue insufficient cycling power Fe (III)/Fe (II).The reactive radicals persistently target extremely anticipated by Fukui function, causing molecules into “non‐toxic” compounds through processes hydroxylation, demethylation, deamidation. This work holds significant importance domain eliminating organic pollutants from water.

Язык: Английский

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Carbon nitride with grafted benzothiadiazole as electron acceptor and active site to promote exciton dissociation for metal-free photocatalytic N2 fixation

Journal of Colloid and Interface Science, Год журнала: 2025, Номер 686, С. 795 - 806

Опубликована: Фев. 3, 2025

Язык: Английский

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S‐Scheme Heterojunction Engineering of CdS/Bi₂WO₆ in Breakthrough Piezocatalytic Nitrogen Reduction and Hydrogen Evolution: Performance, Mechanism, and DFT Calculations

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 5, 2024

Abstract Herein, a novel bismuth tungstate and cadmium sulfide (CdS/Bi 2 WO 6 ）step‐scheme (S‐scheme) heterojunction piezocatalyst for the first time is developed. The exceptional piezocatalytic nitrogen reduction reaction activity (1.37 mmol L −1 g h ) delivered, which significantly higher compared to pure CdS (0.06 bare Bi (0.45 ), showing an almost 23‐fold 3‐fold increase, respectively. This performance greatly exceeds previously reported piezocatalysts piezo‐photocatalysts. Meanwhile, this catalyst also holds outstanding hydrogen evolution rate of 1.02 . Relevant experimental density functional theory (DFT) calculations results demonstrate that excellent catalytic capacity CdS/Bi mainly ascribed construction S‐scheme heterojunction, promotes piezoelectric performance, enhances segregating efficiency charge carriers redox capacity, regulates electronic structure, optimizes dynamics processes reduces reactions barrier, induces more active sites. Furthermore, new mechanism proposed. research extends applications heterojunctions in sustainable energy piezocatalysis offers insights designing efficient systems.

Язык: Английский

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A MOF@MOF S‐scheme Heterojunction with Lewis Acid‐Base Sites Synergistically Boosts Cocatalyst‐Free CO2 Cycloaddition

ChemSusChem, Год журнала: 2024, Номер unknown

Опубликована: Авг. 20, 2024

Abstract The photocatalytic cycloaddition reaction between CO 2 and epoxide is one of the most promising green routes for utilization, which high performance photocatalysts are intensely desired. Herein, we have constructed an S‐scheme heterojunction MIL‐125@ZIF‐67 modified by amino groups, achieves a cyclic carbonate yield as 99 % without employing any co‐catalyst, outperforming previously reported photocatalysts. In‐situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) in‐situ electron paramagnetic resonance (EPR) reveal important role photogenerated migration from Lewis acid (Co) sites to O atom in triggering its ring‐opening (the rate‐determining step reaction) under assistance hole. Synergistically concurrently, base (amino groups) activate *, facilitating following cycloaddition. Such synergistic effect provides favorable approach design efficient heterogeneous with dual/multiple‐active reaction.

Язык: Английский

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Construction of a thiophene-based conjugated polymer/TP-PCN S-scheme to enhance visible-light-driven photocatalytic activity: promotion of wound healing in super-resistant bacterial infections

Journal of Hazardous Materials, Год журнала: 2025, Номер unknown, С. 137429 - 137429

Опубликована: Янв. 1, 2025

Язык: Английский

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Surface and interface engineering of CAU-17/MXene Schottky heterojunction for efficient photocatalytic nitrogen fixation

Separation and Purification Technology, Год журнала: 2025, Номер unknown, С. 131939 - 131939

Опубликована: Фев. 1, 2025

Язык: Английский

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Integrating photocatalytic hydrogen evolution with antibiotic degradation over a dual Z-scheme heterojunction

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 160317 - 160317

Опубликована: Фев. 1, 2025

Язык: Английский

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