华东理工大学邢明阳报道了调节Fenton系统中Lewis酸碱位点增强含盐和缓冲废水中污染物的降解。相关研究成果发表在2024年6月19日出版的国际知名学术期刊《中国化学》。

实际废水中的盐水和缓冲环境对Fenton和类Fenton催化系统提出了更高的要求。

该研究开发了一种具有可控Lewis酸碱位点的MoS₂共催化Fe₂O₃类Fenton体系，实现了在中性缓冲环境下对各种模型污染物和实际工业废水的有效处理。MoS₂/Fe₂O₃催化剂中由边缘S位点（Lewis碱性位点）构建的酸性微环境，易受Mo和Fe元素构建的Lewis酸性位点的影响，影响催化性能。

优化前体量的比例确保了酸性微环境在催化剂表面的稳定存在，使Mo位点的有益共催化作用得以实现。此外，它超越了Fenton反应对反应环境的严格限制，从而扩大了Fe₂O₃等常见氧化物在实际工业水修复中的适用性。

附：英文原文

Title: Regulating Lewis Acid-Base Sites over Fenton System for Enhancing Degradation of Pollutants in Saline and Buffered Wastewater†

Author: Zhuan Chen, Jun Li, Bo Yang, Jiazhen Cao, Lingli Zhu, Mingyang Xing

Issue&Volume: 2024-06-19

Abstract: The saline and buffered environment in actual wastewater imposes higher demands on Fenton and Fenton-like catalytic systems. This study developed a MoS2 co-catalytic Fe2O3 Fenton-like system with controllable Lewis acid-base sites, achieving efficient treatment of various model pollutants and actual industrial wastewater under neutral buffered environment. The acidic microenvironment structured by the edge S sites (Lewis basic sites) in the MoS2/Fe2O3 catalyst is susceptible to the influence of Lewis acidic sites constructed by Mo and Fe element, affecting catalytic performance. Optimizing the ratio of precursor amounts ensures the stable presence of the acidic microenvironment on the surface of catalyst, enabling the beneficial co-catalytic effect of Mo sites to be realized. Furthermore, it transcends the rigid constraints imposed by the Fenton reaction on reaction environments, thereby expanding the applicability of commonplace oxides such as Fe2O3 in actual industrial water remediation.

DOI: 10.1002/cjoc.202400303

Source: https://onlinelibrary.wiley.com/doi/full/10.1002/cjoc.202400303