The Surface/Interface Modulation of Platinum Group Metal (PGM)-Free Catalysts for VOCs and CO Catalytic Oxidation

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(29), P. 37379 - 37389

Published: July 9, 2024

Effective management of volatile organic compounds (VOCs) and carbon monoxide (CO) is critical to human health the ecological environment. Catalytic oxidation one most promising technologies for achieving efficient VOCs CO emission control. Platinum group metal (PGM)-free catalysts are recently receiving sustainable attention in catalyzing removal due their low cost, superior catalytic activity, excellent stability, but PGM-free face challenges low-temperature efficiency. In this mini-review, starting with discussing mechanism oxidation, we summarize surface/interface modulation strategies promote oxygen VOCs/CO molecule activation enhanced including vacancy engineering, heteroatom doping, surface acidity modification, active interface construction. We highlight currently remaining prospects advanced catalyst development highly control practical applications.

Language: Английский

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Recent advances in PVP-assisted thermal treatment: Impact on nanostructure properties, potential applications, challenges, and future perspectives

Results in Physics, Journal Year: 2024, Volume and Issue: unknown, P. 107990 - 107990

Published: Sept. 1, 2024

Language: Английский

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Integrated synthesis of OH- functionalization and CeO2 nanocubes for P-xylene dectection at room temperature

Ceramics International, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 1, 2025

Language: Английский

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Scheelite Catalysts for Thermal Mineralization of Toluene: A Mechanistic Overview

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

Published: March 25, 2025

Toluene, a highly stable aromatic hydrocarbon, is utilized as benchmark molecule for thermal mineralization by the catalytic community. Mostly, catalysts used toluene either use platinum group metals (PGM) or are regulated plasma incinerator. Though these catalysts/processes promise better efficiency and lower reaction temperature, they neither cost-effective nor do produce thermally byproducts. However, most of metal-oxide degradation less efficient owing to incomplete formation intermediates, which results in higher temperature. The present work showcases tungsten- molybdenum-based Scheelites [BaXO4 (X = W, Mo, Mo0.5W0.5)], have been at ∼200 °C. intermediates formed during adsorption deciphered function temperature using situ FT-IR studies including their kinetic behavior. These surface over Scheelite under an oxidative/inert atmosphere elucidate mechanism temperature/time. active sites oxide both detailed X-ray photoelectron spectroscopy (XPS) studies. It shows effective role oxidation states constituent oxides M-O (M Mo/ W) mechanism. Mineralization nonoxidative Mars Van Krevelen (MVK) type mechanism, suggesting participation lattice oxygen reaction. To best our knowledge, this represents one lowest temperatures achieved catalysts. identification can guide further optimization efforts minimize

Language: Английский

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Dimensionality and Charge States in CeO2 Surface Defects: A Theoretical Analysis Using Reactivity/Stability Descriptors with NO as the Test Molecule

Materials Today Communications, Journal Year: 2025, Volume and Issue: unknown, P. 112358 - 112358

Published: March 1, 2025

Language: Английский

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Effect of element doping on the thermal stability of cerium-niobium composite oxide for catalytic degrading C6H5CH3 and C6H5Cl

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: 13(3), P. 117021 - 117021

Published: May 12, 2025

Language: Английский

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Recent progress of cerium-based catalysts for the catalytic oxidation of volatile organic compounds: A review

Fuel, Journal Year: 2025, Volume and Issue: 399, P. 135603 - 135603

Published: May 14, 2025

Language: Английский

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Magnetic Ternary Hybrid Composites as an Efficient Photocatalyst for Degradation of Acid Orange 7 Dye

Catalysts, Journal Year: 2024, Volume and Issue: 14(12), P. 880 - 880

Published: Dec. 2, 2024

Based on the photocatalytic activity and magnetic nature of magnetite goethite, as well oxygen storage characteristic cerianite, a ternary hybrid composite including cubic CeO2, Fe3O4 orthorhombic FeOOH, designated Fe3O4/FeOOH/CeO2, was successfully synthesized with different Ce:Fe molar ratios using simple hydrothermal route without subsequent calcination process, employed photocatalysts for degradation Acid Orange 7 (AO7) dye. The absorption range light by Fe3O4/FeOOH/CeO2 composites broadened, intensity enhanced. Furthermore, there existed possibility hybridization doping among three crystalline structures, elements Ce, Fe O exhibiting uniform distribution, significantly enhancing efficiency in promoting photodegradation AO7. response behaviors were investigated. adsorptive AO7 darkness under UV illumination evaluated. Moreover, ten cycling runs simulated ratio 1:15 performed. proved to have excellent sensitivity, exhibited outstanding activities demonstrated remarkable stability. It is anticipated that may potential applications treatment organic dye sewage.

Language: Английский

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Microdroplet-accelerated cycloaddition of gaseous phenylacetylene and indoline derivatives to form tricyclic quinolines

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 495, P. 153179 - 153179

Published: June 15, 2024

Language: Английский

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Boosting Lewis acidic sites via SMSI to enrich oxygen vacancies on Pt–CeO₂ catalysts: enhancing efficiency of CO promoted toluene catalysis

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

Intuitively regulating reductive SMSI can optimize the acid sites and oxygen vacancies on Pt/CeO 2 catalysts. It is realized that presence of CO catalysts promote toluene combustion.

Language: Английский

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