Solvent-induced fabrication of Cu/MnOx nanosheets with abundant oxygen vacancies for efficient and long-lasting photothermal catalytic degradation of humid toluene vapor

Applied Catalysis B Environment and Energy, Journal Year: 2023, Volume and Issue: 328, P. 122509 - 122509

Published: Feb. 21, 2023

Language: Английский

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Probing the Actual Role and Activity of Oxygen Vacancies in Toluene Catalytic Oxidation: Evidence from In Situ XPS/NEXAFS and DFT +UCalculation

ACS Catalysis, Journal Year: 2023, Volume and Issue: 13(6), P. 3444 - 3455

Published: Feb. 23, 2023

Metal oxide catalysts like CeO2 exhibit promising prospects to replace the currently used noble metal in catalytic oxidation of volatile organic compounds (VOCs). Although oxygen vacancy is regarded as an active site these novel VOC elimination (e.g., toluene), its actual function and activity remain unclear due limitation following dynamic evolution during reactions. Meanwhile, because involves generation–consumption cycle reactive species rather than being constant, this barrier causes a deficient understanding backfilling rate-determining steps. Hence, CeO2-based with varying concentrations were synthesized for toluene through tensile-strained lattice electron deficit induced by cobalt doping. The evolutions vacancies directly followed means situ X-ray photoelectron spectroscopy near-edge absorption fine structure. Evidence was captured that participate subsurface storage diffusion besides their surface regeneration. This mechanism reflects fundamentals capacity providing additional supplement when needed. Additionally, part discerned be not enough backfilling, leaving process crucial step aromatic ring opening. degradation mechanism, including electrophilic adsorption sites, how regulates also revealed via density functional theory + U calculation.

Language: Английский

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A review of activating lattice oxygen of metal oxides for catalytic reactions: Reaction mechanisms, modulation strategies of activity and their practical applications

Applied Catalysis A General, Journal Year: 2023, Volume and Issue: 664, P. 119348 - 119348

Published: July 23, 2023

Language: Английский

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Dual‐Atomic‐Site Catalysts for Molecular Oxygen Activation in Heterogeneous Thermo‐/Electro‐catalysis

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(22)

Published: March 9, 2023

Efficient molecular oxygen activation (MOA) is the key to environmentally friendly catalytic oxidation reactions. In last decade, single-atomic-site catalysts (SASCs) with nearly 100 % atomic utilization and unique electronic structure have been widely investigated for MOA. However, single active site makes effect unsatisfactory difficult deal complex Recently, dual-atomic-site (DASCs) provided a new idea effective of (O2 ) due more diverse sites synergetic interactions among adjacent atoms. this review, we systematically summarized recent research progress DASCs MOA in heterogeneous thermo- electrocatalysis. Finally, look forward challenges application prospects construction

Language: Английский

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Vanadium- and manganese-based metal-organic frameworks for potential environmental and catalysis applications

Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 522, P. 216231 - 216231

Published: Sept. 25, 2024

Language: Английский

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Non–closed–loop recycling strategies for spent lithium–ion batteries: Current status and future prospects

Energy storage materials, Journal Year: 2024, Volume and Issue: 67, P. 103288 - 103288

Published: Feb. 21, 2024

Language: Английский

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Efficient Catalytic Elimination of Toxic Volatile Organic Compounds via Advanced Oxidation Process Wet Scrubbing with Bifunctional Cobalt Sulfide/Activated Carbon Catalysts

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: 58(20), P. 8846 - 8856

Published: May 10, 2024

Advanced oxidation process (AOP) wet scrubber is a powerful and clean technology for organic pollutant treatment but still presents great challenges in removing the highly toxic hydrophobic volatile compounds (VOCs). Herein, we elaborately designed bifunctional cobalt sulfide (CoS2)/activated carbon (AC) catalyst to activate peroxymonosulfate (PMS) efficient VOC removal an AOP scrubber. By combining excellent adsorption capacity of AC with PMS activation activity CoS2, CoS2/AC can rapidly capture VOCs from gas phase proceed SO4•– HO• radical-induced reaction. More than 90% aromatic were removed over wide pH range (3–11) low Co ion leaching (0.19 mg/L). The electron-rich sulfur vacancies low-valence species main active sites activation. was mainly responsible initial VOCs, while O2 acted subsequent ring-opening mineralization processes intermediates. No gaseous intermediates detected, liquid like benzene also greatly decreased, thus effectively reducing health toxicity associated byproduct emissions. This work provided comprehensive understanding deep via scrubber, significantly accelerating its application environmental remediation.

Language: Английский

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Tailoring local environment of oxygen vacancies by molybdenum doping on MnO2 for enhanced catalytic oxidation of VOCs

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 481, P. 148703 - 148703

Published: Jan. 12, 2024

Language: Английский

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Catalytic oxidation of VOCs and CO on cobalt-based Materials: Strategies and mechanisms for improving activity and stability

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 484, P. 149296 - 149296

Published: Feb. 5, 2024

Language: Английский

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Photo-assisted technologies for environmental remediation

Published: March 4, 2025

Language: Английский

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