Cu-O-Fe boosts electronic transport for efficient peroxymonosulfate activation over a wide range of pH

Journal of Hazardous Materials, Journal Year: 2025, Volume and Issue: 492, P. 138118 - 138118

Published: April 4, 2025

Language: Английский

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Engineering Unsaturated Cu₁–O₃ Coordination to Boost Oxygen Species Activation for Low-Temperature Catalysis in CO Oxidation

JACS Au, Journal Year: 2025, Volume and Issue: unknown

Published: April 15, 2025

The activation of lattice oxygen at low temperatures is essential for heterogeneous catalytic oxidation, but exactly how this achieved by adjusting the coordination structure atomic sites still elusive. Herein, Cu1O3-CeO2 catalyst with highly dispersed unsaturated Cu1-O3 was creatively engineered, which remarkably enhanced low-temperature oxidation CO (a typical model reaction) from 12% to 90% 66 °C compared conventional CuCeO x catalyst. preservation coordination-deficient Cu enables transfer electron cloud density atoms O atoms, hence, facilitating oxygen. Further atom species results in charge back-donation form sufficient Cu+ and metal per-oxy species, contributing weaken O-O bonds. We determined that increasing number donors induced an efficient strategy develop active stable catalysts activation. synthesis strategies mechanism demonstrated work provide a generalizable platform future design well-defined functional reactions.

Language: Английский

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Adhesive-Coupled Polymer Multistage Modified Sustainable Alkali-Activated Materials: Barrier Performance and Microstructural Investigation Under Accelerated Curing Conditions

Sustainability, Journal Year: 2025, Volume and Issue: 17(10), P. 4344 - 4344

Published: May 11, 2025

Alkali-activated materials have gained increasing popularity in the field of soil barrier due to their high strength and low environmental impact. However, made from alkali-activated still suffer long setting times poor performance acidic, alkaline, saline environments, which hinders sustainable development green materials. Herein, coconut shell biochar, sodium silicate-based adhesives, polyether polyol/polypropylene polymers were used for multi-stage material modification. The modified evaluated performance, rapid formation, resistance using metrics such as compressive strength, permeability, mass loss, VOC diffusion efficiency. results indicated that adhesive modification reduced material’s time 72 12 h. Polymer improved corrosion by 15–20%. biochar-containing achieved efficiency over 99% both normal corrosive conditions. These improvements are attributed accelerating calcium silicate hydration forming strength-enhancing compounds, polymer providing resistance, biochar enhancing volatile organic compounds (VOC) properties. combined yielded a highly effective suitable formation protection. findings contribute evaluating multi-level materials’ effectiveness potential benefits this provide new insights modified, green, efficient materials, promoting pollution control technologies.

Language: Английский

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Development of a novel Co-doped carbon fiber from textile waste as catalyst for the highly efficient degradation of organic pollutants: The key role of C–O–Co bond

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 155494 - 155494

Published: Sept. 1, 2024

Language: Английский

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High metal-loaded sub-nanocluster catalyst enhanced Fenton-like reaction activity for emerging contaminants degradation by generating high-valent copper

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: unknown, P. 129794 - 129794

Published: Sept. 1, 2024

Language: Английский

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Treating waste with waste: New insight into phosphorus removal by graphitic carbon nitride modified water treatment sludge-based ceramsite

Environmental Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 1, 2024

Language: Английский

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