近日，山东大学许醒团队报道了原子配位工程和污染物协同调节自激单原子催化零氧化剂的可持续水净化。2026年4月6日，《科学通报》杂志发表了这一成果。

基于单原子双反应中心体系的绿色类芬顿反应代表了一种新型水处理策略，可实现低能耗和零氧化剂消耗。然而，其基于单原子构型和污染物类型的核心机制仍不明确。

研究组通过系统研究不同构型（Fe/N_x-SAC，x = 5, 4, 3）的铁单原子催化剂（SACs）以及具有不同电子性质的污染物，深入探讨了自激发类芬顿反应（无需外部氧化剂）的性能与机理。结果表明，Fe/N_x-SAC 具有很强的电子接受能力，能够从污染物中提取电子，从而启动主要基于单原子铁还原/氧化的自激发路径。

此外，该自激发路径还可受到SACs的配位环境和污染物给电子能力的共同调控：（i）Fe/N_x-SAC 中不同的配位环境表现出差异化的电子接受能力，这直接决定了它们调控铁介导的自激发路径的电子提取能力；（ii）具有较高给电子能力的污染物可显著提高电子转移效率，并加速铁单原子的还原/氧化过程。该研究为构建具有可持续氧化能力和路径的自激发类芬顿体系用于污染物净化提供了一种策略。

附：英文原文

Title: Atomic coordination engineering and pollutants synergy co-modulate self-motivated single-atom catalysis with zero-oxidant addition for sustainable water purification

Author: Yanbiao Liu c, Xing Xu a b

Issue&Volume: 2026/04/06

Abstract: Green Fenton-like reaction based on the single-atom dual-reaction-center systems represents a novel water treatment strategy that achieves low-energy consumption and zero-oxidant consumption. However, its core mechanism based on the single-atom configurations and pollutant types remains unclear. In this study, an in-depth exploration was conducted on the performance and mechanism of the self-motivation Fenton-like reactions (without the external oxidants) by systematically investigating iron single-atom catalysts (SACs) with different configurations (Fe/Nx-SAC, x = 5, 4, 3) and pollutants with various electronic properties. The results indicated that the Fe/Nx-SAC exhibited strong electron-accepting capabilities for extracting electrons from the pollutants to initiate the self-motivated pathway primarily based on single-atom iron reduction/oxidation. Additionally, this self-motivated pathway could be further co-regulated by the coordination environments of SACs and electron-donating characteristics of pollutants. (i) Distinct coordination environments in Fe/Nx-SAC exhibited differential electron-accepting capacities, directly governing their electron extraction capability for modulating iron-mediated self-motivation pathways; (ii) pollutants with higher electron-donating capacity could significantly improve electron-transfer efficiency and accelerate iron single-atom reduction/oxidation. This work provided a strategy to establish self-motivated Fenton-like systems with sustainable oxidation capacities and pathways for pollutant decontamination.

DOI: 10.1016/j.scib.2026.04.017

Source: https://www.sciencedirect.com/science/article/abs/pii/S209592732600366X