Photo-/electro-/piezo-catalytic elimination of environmental pollutants

Journal of Photochemistry and Photobiology A Chemistry, Journal Year: 2022, Volume and Issue: 437, P. 114435 - 114435

Published: Nov. 24, 2022

Language: Английский

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Insights into adsorption and high photocatalytic oxidation of ciprofloxacin under visible light by intra-molecular Donor-Acceptor like p-n isotype heterojunction: Performance and mechanism

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 464, P. 142533 - 142533

Published: March 22, 2023

Language: Английский

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Recent development of novel nanocomposites for photocatalysis mediated remediation of phenolic derivatives: A comprehensive review

Journal of Industrial and Engineering Chemistry, Journal Year: 2023, Volume and Issue: 127, P. 18 - 35

Published: July 21, 2023

Language: Английский

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Molecular-level design of isolated molybdenum oxide anchored on carbon nitride for photocatalytic H2 production and environmental remediation

Applied Catalysis B Environment and Energy, Journal Year: 2023, Volume and Issue: 336, P. 122907 - 122907

Published: June 1, 2023

Language: Английский

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One-Step Fabrication of the ZnO/g-C₃N₄ Composite for Visible Light-Responsive Photocatalytic Degradation of Bisphenol E in Aqueous Solution

ACS Omega, Journal Year: 2023, Volume and Issue: 8(13), P. 11824 - 11836

Published: March 21, 2023

The ZnO/g-C3N4 composite was successfully synthesized by a simple one-step calcination of urea and zinc acetate mixture. photocatalytic activity the evaluated in degradation bisphenol E (BPE). morphology, crystallinity, optical properties, composition were characterized using various analytical techniques such as scanning electron microscopy (SEM), transmitted (TEM), field emission-electron probe microanalysis (FE-EPMA), nitrogen adsorption desorption isotherm measurement, Fourier-transform infrared (FTIR) spectroscopy, X-ray powder diffraction (XRD), diffuse reflectance spectroscopy (DRS), photoluminescence (PL) electrochemical impedance (EIS), photoelectron (XPS), thermogravimetric analysis (TGA). rate BPE with 8 times larger than that obtained pure g-C3N4 at optimal conditions. excellent attributed to synergistic effect between ZnO, which enhanced efficiency charge separations, reduced e-/h+ pairs recombination, increased visible light absorption ability. radical scavenger studies indicated •O2- h+ species mainly responsible for BPE. stability test suggested chemical photostability composite. Two possible photocatalytical mechanisms have been suggested.

Language: Английский

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Construction of interfacial electric field via Bimetallic Mo2Ti2C3 QDs/g-C3N4 heterojunction achieves efficient photocatalytic hydrogen evolution

Journal of Colloid and Interface Science, Journal Year: 2023, Volume and Issue: 653, P. 1671 - 1682

Published: Sept. 26, 2023

Language: Английский

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Efficient photocatalytic conversion of xylose to co-produce xylonic acid and CO via a dual S-scheme heterojunction photocatalyst between carbon nitride and CuInS₂ quantum dot-sensitized ZnIn₂S₄

Green Chemistry, Journal Year: 2024, Volume and Issue: 26(5), P. 2893 - 2902

Published: Jan. 1, 2024

Heterojunction photocatalysts receive significant interest due to their high performance and easy fabrication.

Language: Английский

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Polyoxometalates Embedded into Covalent Triazine Frameworks Regulating Charge Transfer for Visible-Light-Driven Synthesis of Functionalized Sulfoxides and Detoxification of Mustard Gas Simulants

ACS Sustainable Chemistry & Engineering, Journal Year: 2024, Volume and Issue: 12(4), P. 1655 - 1665

Published: Jan. 17, 2024

For environmentally friendly and sustainable development demands, visible-light-driven oxidation of sulfides has become one the most popular strategies to synthesize functionalized sulfoxides degrade mustard gas simulants. Herein, three novel polyoxometalate-based covalent triazine frameworks, SiW12-CTF (1), PW12-CTF (2) PMo12-CTF (3) (CTF = framework), were synthesized via hydrothermal reaction characterized by infrared spectroscopy, powder X-ray diffraction, XPS spectroscopy UV–vis DRS, etc. These compounds are excellent photocatalysts for selective synthesis various as well degradation 2-chloroethyl ethyl sulfide (CEES) illuminated a 10 W 425 nm LED in an O2 atmosphere. Oxygen-rich POMs with strong electronegativity modulate electronic structure create built-in electric field POM-CTFs, which promotes separation migration photogenerated carriers. Meanwhile, encapsulation POM guests into CTF induces different electron transfer behaviors, resulting photocatalytic activities. Specifically, PW12-CTF, visible-light-induced methyl phenyl sulfide, obtain sulfoxide yields 96% 88% within 2 h, respectively, is higher than (68%) SiW12 (5%). However, exhibits inferior properties, yield 35% under same conditions. The in-depth mechanism reveals that process dominated O2•– energy induced 1O2 exist system. In addition, can be used catalyze sulfur-containing maintains boosted structural stability catalytic activity after reaction.

Language: Английский

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Reconstruction of D‐Π‐A Polymer Accelerating Photocatalytic Degradation of BPA and Production of H₂O₂

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 34(13)

Published: Dec. 21, 2023

Abstract Advanced oxidation processes (AOPs) using hydroxyl radicals (•OH) as oxidizing agents are a promising technology. Herein, feasible strategy is developed to initially construct carbazole‐based D‐π‐A type conjugated polymer (PBNCZ) via the oxidative coupling. Additionally, introducing ─COO − through Cyano hydrolysis extends its structure and improves energy band structure, which greatly facilitates generation of •OH well enrichment pollutants. Detailed experiments theoretical calculations have proved that introduction enhances adsorption O 2 bisphenol A (BPA), optimizing reaction path •OH. Thus, it completely decomposes 10 ppm BPA within just min, exceeding all previously organic photocatalysts. Meanwhile, efficiency photocatalytic H production by PBNCZ‐COO reaches 1719.03 µmol h −1 g under visible light. This multifunctional material with high capacity, photodegradation efficiency, activity provides solid foundation for preparation

Language: Английский

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Advanced Functional Carbon Nitride by Implanting Semi‐Isolated VO₂ Active Sites for Photocatalytic H₂ Production and Organic Pollutant Degradation

Small, Journal Year: 2023, Volume and Issue: 19(28)

Published: April 7, 2023

Abstract It is critical to facilitate surface interaction for liquid–solid two‐phase photocatalytic reactions. This study demonstrates more advanced, efficient, and rich molecular‐level active sites extend the performance of carbon nitride (CN). To achieve this, semi‐isolated vanadium dioxide obtained by controlling growth non‐crystalline VO 2 anchored into sixfold cavities CN lattice. As a proof‐of‐concept, experimental computational results solidly corroborate that this atomic‐level design has potentially taken full advantage two worlds. The photocatalyst comprises highest dispersion catalytic with lowest aggregation, like single‐atom catalysts. also accelerated charge transfer boosted electron–hole pairs, mimicking heterojunction photocatalysts. Density functional theory calculations show single‐site significantly elevates Fermi level, compared typical heterojunction. unique features result in high visible‐light H production 645 µmol h −1 g only 1 wt% Pt. They represent an excellent degradation rhodamine B as well tetracycline, surpassing activities from many conventional heterojunctions. presents exciting opportunities new heterogeneous metal oxide variety

Language: Английский

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