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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Localized assembly in biological activity: Origin of life and future of nanoarchitectonics

Advances in Colloid and Interface Science, Год журнала: 2025, Номер 339, С. 103420 - 103420

Опубликована: Фев. 3, 2025

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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H₂O₂ Mediated Photoreduction of Nitrates to Ammonia by Iron Filings under Ambient Conditions

The Journal of Physical Chemistry Letters, Год журнала: 2025, Номер unknown, С. 876 - 881

Опубликована: Янв. 17, 2025

Herein, a simple ambient conditioned sunlight promoted photochemical reduction reaction is demonstrated for the of nitrate (NO3–) conversion to ammonia (NH3) with maximum yield ∼16 mM using iron filings (f-Fe) in presence H2O2. Based on radical scavenging study reactive species and characterization catalyst f-Fe before after reaction, plausible mechanism has been proposed synthesis NH3. The results associated NH3 have verified 15N isotopic labeled (15NO3–), which supports simpler viability reported procedure.

Язык: Английский

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Enhanced g-C3N4 photocatalytic removal of tetracycline under visible light: Synergistic effect of N vacancies and Ni, Zr co-doping

Journal of Photochemistry and Photobiology A Chemistry, Год журнала: 2025, Номер unknown, С. 116308 - 116308

Опубликована: Янв. 1, 2025

Язык: Английский

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Facile and Versatile Construction of MOF@COF Heterostructures in Atmospheric Air for Enhanced CO₂ Photoreduction

CrystEngComm, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

A facile and versatile concentration-acid co-regulation strategy was developed, synthesizing MOF@COF composites with enhanced CO 2 RR performances in air without arduous treatments.

Язык: Английский

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Self‐Powered Biosensor‐Based Multifunctional Platform for Detection and In Situ Elimination of Bacteria

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 18, 2025

Abstract Enzymatic biofuel cells (EBFCs) have been widely applied in self‐powered biosensing. However, the relatively low catalytic activity and poor stability of enzymes during immobilization limit their applications. Herein, hollow porous metal‐organic frameworks (MOFs) are synthesized to encapsulate glucose oxidase (GOx), which is modify bioanode an EBFC‐based biosensor reduce interfacial interactions improve enzyme stability. Based on aptamer recognition target Escherichia coli ( E. ), a cascade reaction triggered bioanode, followed by hairpin assembly (CHA) biocathode for signal amplification. This biosensing platform exhibits high sensitivity selectivity detection range 10 1.0 × 7 CFU mL −1 (S/N = 3) with 3 . Moreover, owing generation Ag + reaction, situ elimination realized. study provides new perspective integrating pathogenic environmental bacteria.

Язык: Английский

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Homo‐Hetero Double Junction Coupling Weakens Exciton Effects to Enhance Selective Photocatalytic O₂ Activation on Carbon Nitride

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 23, 2025

Abstract Exciton effects caused by the inherent dielectric confinement in 2D material carbon nitride (CN) severely limit transfer of photogenerated carriers and selective generation free radicals. Herein, a homo‐hetero double junction coupling strategy is reported to address these challenges. Ternary homojunction (HCCN) functionalized with cyano cyanamide groups constructed built‐in electric field that efficiently separates electron–hole into different structural units, thereby reducing reverse charge recombination weakening exciton effects. The introduction α‐Fe 2 O 3 (FO) subsequently constructs catalyst FO/HCCN 127 times stronger than HCCN, which promotes directional migration after dissociation achieves ≈100% ·O − from . These results suggest 99.6% removal tetracycline within 20 min, degradation rate 12 46 higher FO/CN respectively. In addition, system shows excellent stability cyclability real‐life light experiments trace organic contaminant removal. This opens up new avenues precisely controlling

Язык: Английский

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Tandem electrocatalysis for accelerated lithium sulfides precipitation enabled by the synergy between lithiophilicity and sulfiphilicity of CeO2-NiCo2S4 heterostructures in lithium-sulfur batteries

Journal of Alloys and Compounds, Год журнала: 2025, Номер unknown, С. 179664 - 179664

Опубликована: Март 1, 2025

Язык: Английский

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Charge-transfer dynamics in S-scheme photocatalyst

Nature Reviews Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Март 17, 2025

Язык: Английский

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