A plasmonic S-scheme Au/MIL-101(Fe)/BiOBr photocatalyst for efficient synchronous decontamination of Cr(VI) and norfloxacin antibiotic

eScience, Journal Year: 2023, Volume and Issue: 4(2), P. 100208 - 100208

Published: Nov. 3, 2023

Present photocatalysts for the synchronous cleanup of pharmaceuticals and heavy metals have several drawbacks, including inadequate reactive sites, inefficient electron–hole disassociation, insufficient oxidation reduction power. In this research, we sought to address these issues by using a facile solvothermal-photoreduction route develop an innovative plasmonic S-scheme heterojunction, Au/MIL-101(Fe)/BiOBr. The screened-out Au/MIL-101(Fe)/BiOBr (AMB-2) works in durable high-performance manner both Cr(VI) norfloxacin (NOR) eradication under visible light, manifesting up 53.3 2 times greater NOR abatement rates, respectively, than BiOBr. Remarkably, AMB-2's ability remove Cr(VI)-NOR co-existence system is appreciably better sole-Cr(VI) environment; synergy among Cr(VI), NOR, AMB-2 results utilization photo-induced carriers, yielding desirable capacity decontaminating synchronously. integration MOF-based heterojunctions effect contributes markedly reinforced photocatalytic increasing number active augmenting visible-light absorbance, boosting efficient disassociation redistribution powerful photo-carriers, elevating generation substances. We provide details mechanism, decomposition process, bio-toxicity intermediates. This synergistic strategy modifying with noble metal opens new horizons devising excellent photosystems environment purification.

Language: Английский

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Chemically bonded Mn0.5Cd0.5S/BiOBr S-scheme photocatalyst with rich oxygen vacancies for improved photocatalytic decontamination performance

Advanced Powder Materials, Journal Year: 2024, Volume and Issue: 3(3), P. 100183 - 100183

Published: Feb. 20, 2024

Devising exceptional S-scheme heterojunction photocatalysts utilized in annihilating pharmaceuticals and chromium contamination is significant for addressing the problem of global water pollution. In this work, a chemically bonded Mn0.5Cd0.5S/BiOBr heterostructure with oxygen vacancies ingeniously developed through facile in-situ solvothermal synthesis. The designed exhibits eminently reinforced photo-activity destruction tetracycline hydrochloride Cr (VI) as compared its individual components. This substantial photo-redox performance amelioration benefitted from creation an intense internal electric field (IEF) via supplying powerful driving force migration highway by interfacial chemical bond to foster electron/hole disintegration. More intriguingly, IEF at hetero-interface drives fast consumption photo-induced holes Mn0.5Cd0.5S photoelectrons BiOBr, profoundly boosting enrichment active photo-carriers sparing photo-corrosion Mn0.5Cd0.5S. Furthermore, anti-interference property can work efficiently real matrices. Multiple uses recycled Mn0·5Cd0·5S/BiOBr evidence prominent robustness stability. achievement indicates vast potential photosystems structural defects design photo-responsive materials effective wastewater treatment.

Language: Английский

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Carbon quantum dots-modified tetra (4-carboxyphenyl) porphyrin/BiOBr S-scheme heterojunction for efficient photocatalytic antibiotic degradation

Science China Materials, Journal Year: 2024, Volume and Issue: 67(2), P. 562 - 572

Published: Jan. 23, 2024

Language: Английский

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Rapid dissociation of high concentration excitons between [Bi2O2]2+ slabs with multifunctional N-Bi-O sites for selective photoconversion into CO

Applied Catalysis B Environment and Energy, Journal Year: 2023, Volume and Issue: 335, P. 122892 - 122892

Published: May 18, 2023

Language: Английский

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Dual defect regulation of BiOCl halogen layer enables photocatalytic O2 activation into singlet oxygen for refractory aromatic pollutant removal

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: 345, P. 123689 - 123689

Published: Jan. 3, 2024

The generation of singlet oxygen (1O2) based on photocatalytic activation O2 is considered to have important application prospects in purifying refractory organic pollutants water. However, the uncertain dual pathway transformation activated severely limits 1O2. In this work, we show a robust BiOCl with defects (adjacent I-substitution defect and Cl vacancy) halogen layer for selective generate Combining experiments theoretical calculations, confirm that are beneficial optimizing band structures, improving carrier separation efficiency, promoting adsorption activation. More importantly, it confirmed can directionally convert into 1O2 by increasing thermodynamic conversion energy barrier non-1O2 pathways serving as necessary site functions oxidation reduction. Applying modified removal aromatic water, found has efficient stable degradation efficiency broad environmental adaptability. This work not only provides in-depth insights mechanism produce 1O2, but also lays foundation further development highly active photocatalysts remediation conversion.

Language: Английский

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Synergistic Effect of Ion Doping and Type-II Heterojunction Construction and Ciprofloxacin Degradation by MIL-68(In,Bi)-NH₂@BiOBr under Visible Light

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(2), P. 2351 - 2364

Published: Jan. 4, 2024

Heterojunction structure and ion doping techniques are viable tactics in facilitating the generation separation of photogenerated electrons holes photocatalysis. In current study, a novel Bi ion-doped MIL-68(In,Bi)-NH2@BiOBr (MIBN@BOB) type-II heterojunction was first synthesized one-step solvothermal reaction. Doping ions not only broadened light-sensing range but also provided reliable anchor sites for situ growth BiOBr. Meanwhile, heterostructure supplied new channels carriers, accelerating transfer inhibiting recombination electron–hole. The obtained MIBN@BOB exhibited enhanced photocatalytic performance (91.1%) than MIL-68(In)-NH2 (40.8%) BiOBr (57.5%) ciprofloxacin (CIP) degradation under visible light, with excellent reusability. Photocatalysts were characterized detail, series photoelectrochemical tests utilized to analyze photoelectric properties. deduced conform electron conduction mechanism conventional heterojunctions. More importantly, based on above experiments density functional theory (DFT) calculation, BiOBr-Bi can serve as major active CIP enrichment, •O2– 1O2 generated at interface react adsorbed directly. Lastly, possible products pathways analyzed by liquid chromatography-tandem mass spectrometry (LC/MS/MS). This study provides reference construction ion-doping-modified metal–organic framework (MOF)-based photocatalysts their application antibiotic removal.

Language: Английский

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NH2-UiO-66 modification BiOBr enhancement photoreduction CO2 to CO

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 344, P. 127289 - 127289

Published: March 28, 2024

Language: Английский

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S-scheme P-doped g-C3N4/BiOBr heterojunction with oxygen vacancy for efficient photocatalytic degradation of phenanthrene: Enhance molecular oxygen activation and mechanism insights

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 472, P. 145053 - 145053

Published: July 26, 2023

Language: Английский

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In situ reversible assembly of atomic interfacial structure in BiOI/Bi5O7I p-n heterojunctions to promote visible-light photocatalysis

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 481, P. 148350 - 148350

Published: Dec. 25, 2023

Language: Английский

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Oxygen vacancies in Z-scheme r-MIL-88A/OV-BiOBr heterojunctions enhance photo-Fenton degradation of chloroquine phosphate: Mechanisms insight, DFT calculations, degradation pathways and toxicity assessment

Journal of Material Science and Technology, Journal Year: 2024, Volume and Issue: 190, P. 172 - 187

Published: Jan. 26, 2024

Language: Английский

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