华东理工大学邢明阳团队报道了具有可回收性和零金属损失的，约束非均相CoFe₂O₄/ZnO/PMS类芬顿系统用于工业废水修复。相关研究成果发表在2024年12月25日出版的《德国应用化学》。

尽管非均相类Fenton过程在废水处理中引起了广泛关注，但大量浸出的活性离子会导致二次污染，并混淆反应区域的划分。

该研究通过构建一个受约束的完全非均相系统，并突出其集中在颗粒滑动平面内的反应区域，实现了有效的有机污染物降解，而不会浸出任何游离的活性金属成分。基于Poisson-Boltzmann方程和双电层模型，证实了约束区域的具体存在，并首次阐明了传统非均相类Fenton反应中固体界面与滑移面之间被忽视的反应区域。

由于其独特的约束特性，该系统因其对环境干扰的广泛抵抗力，在天然水和实际工业废水中显示出非凡的应用潜力。此外，碱化老化过程使该系统能够实现催化剂回收和零金属离子排放，即使在高盐废水中也能保持出色的污染物去除性能，展现出受约束的完全非均相系统的优越性。

该项工作证明了滑动平面内的重要反应区域，并为非均相类芬顿体系提供了更清晰的边界。

附：英文原文

Title: Constrained Heterogeneous CoFe2O4/ZnO/PMS Fenton-Like System for Industrial Wastewater Remediation with Recyclability and Zero Metal Loss

Author: Ming Yang, Wenyuan Liu, Qi Liu, Zhuan Chen, Jiazhen Cao, Jinming Luo, Mingyang Xing

Issue&Volume: 2024-12-25

Abstract: Although heterogeneous Fenton-like processes have attracted widespread attention in wastewater treatment, the mass leached active ions lead to secondary pollution and confuse the demarcation of reaction region. By constructing a constrained completely heterogeneous system and highlighting its reaction region concentrated within the slipping plane of particles, this work achieves efficient organic pollutants degradation without leaching of any free active metal components. Based on the Poisson-Boltzmann equation and electric double layer model, the specific existing of the constrained region is confirmed, and this neglected reaction region between solid interface and slipping plane in traditional heterogeneous Fenton-like reaction is clarified firstly. Due to the unique constrained property, this system demonstrates exceptional potentials application to natural water and actual industrial wastewater for its broad resistance to environmental interference. Furthermore, the alkalization aging process enables this system achieve catalyst recycle and zero metal ions emission with maintaining outstanding pollutants removing performance even in high-salt wastewater, exhibiting the superiority of the constrained completely heterogeneous system. This work demonstrated the important reaction region within slipping plane and provided a clearer boundary in heterogeneous Fenton-like system.

DOI: 10.1002/anie.202421797

Source: https://onlinelibrary.wiley.com/doi/10.1002/anie.202421797