O‐Bridged Co‐Cu Dual‐Atom Catalyst Synergistically Triggers Interfacial Proton‐Coupled Electron Transfer: A New Approach to Sustainable Decontamination

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 28, 2025

Abstract Heteroatom‐bridged dual‐atom catalysts (DACs), featuring more flexible active sites and intermetallic interaction, provide an opportunity for sustainable environmental remediation. Herein, innovative oxygen‐bridged Co‐Cu DAC supported on nano‐alumina (CoOCu‐DAC) is fabricated using a straightforward two‐step process. The as‐prepared catalyst significantly enhances both decontamination kinetics peroxymonosulfate (PMS) utilization efficiency by 1–3 orders of magnitude toward monoethanolamine (MEA, p K = 9.5) compared to Co single‐atom (Co‐SAC) bulk metal catalysts, largely outperforms previously reported systems. In‐situ ATR‐FTIR theoretical investigations reveal that the secondary introduction Cu plays multiple important roles: it activates lattice oxygen trigger key proton transfer (PT) MEAH + via nucleophilic attack at interface subsequently favors deprotonated MEA as efficient electron donor accelerate (ET) enhancing orbital overlaps co‐activation O 2 PMS. Such stepwise proton‐coupled (PCET)‐enhanced catalytic pathway mediated CoOCu‐DAC fundamentally different from common route identified in Co‐SAC‐involved Fenton‐like system. established binary QSAR further substantiates universality PCET‐enhanced strategy versatile nitrogen‐containing organic compounds. This study offers new perspective water other related areas catalysis based rationalized design multifunctional atomic level.

Language: Английский

Mechanism of OH-initiated oxidation of β-diketone at the acidic droplet interface

Chemical Physics Letters, Journal Year: 2025, Volume and Issue: unknown, P. 142135 - 142135

Published: April 1, 2025

Language: Английский

Photodegradation of PCB-209 on Suspended Particles: Discrepancy in Mechanism of Direct Dechlorination and Active Species-Mediated Indirect Dechlorination Reactions

Water Research, Journal Year: 2025, Volume and Issue: 283, P. 123797 - 123797

Published: May 9, 2025

Language: Английский