化工进展 ›› 2025, Vol. 44 ›› Issue (10): 5975-5990.DOI: 10.16085/j.issn.1000-6613.2024-1441

• 资源与环境化工 • 上一篇    

过硫酸盐体系中非自由基路径的调控研究进展

胡芝璇1,2(), 熊婷1,3(), 蒋龙波2,3(), 袁兴中2,3   

  1. 1.湖南工商大学前沿交叉学院,湖南 长沙 410205
    2.湖南大学环境科学与工程学院,湖南 长沙 410082
    3.湘江实验室,湖南 长沙 410205
  • 收稿日期:2024-09-03 修回日期:2024-10-22 出版日期:2025-10-25 发布日期:2025-11-10
  • 通讯作者: 熊婷,蒋龙波
  • 作者简介:胡芝璇(2001—),女,硕士研究生,研究方向为环境修复、环境功能材料。E-mail:zhixuan0413@163.com
  • 基金资助:
    湘江实验室重大项目(24XJ01003);湘江实验室开放基金(23XJ03013);湖南工商大学“数智+”学科交叉研究项目(2023SZJ05);湖南省骨干教师项目;湖南省自然科学基金(2023JJ30136);湖南省生态环境厅环保科研项目(HBKYXM-2023011);湖南省教育厅科研项目(23B0039);湖南省教育厅科研项目(22B0670)

Advances in the regulation of non-free radical pathways in persulfate systems

HU Zhixuan1,2(), XIONG Ting1,3(), JIANG Longbo2,3(), YUAN Xingzhong2,3   

  1. 1.Frontier Crossing College, Hunan Technology and Business University, Changsha 410205, Hunan, China
    2.College of Environmental Science and Engineering, Hunan University, Changsha 410082, Hunan, China
    3.Xiangjiang Laboratory, Changsha 410205, Hunan, China
  • Received:2024-09-03 Revised:2024-10-22 Online:2025-10-25 Published:2025-11-10
  • Contact: XIONG Ting, JIANG Longbo

摘要:

近年来,过硫酸盐基高级氧化技术(PS-AOPs)已被广泛用于废水中有机污染物的去除,其净水效果与催化剂诱导的活性氧物种类型密切相关。PS-AOPs体系可通过自由基路径(·OH和·SO4-等)或非自由基路径(1O2、电子转移和高价金属种等)降解污染物。自由基在非均相体系中存在无选择性、作用时间短、易于与卤素离子反应生成有毒副产物等问题,且废水中的多种干扰离子(如OH-、Cl-、CO32-等)会消耗自由基,减少其与有机污染物的作用量,从而影响处理效果。非自由基对富电子污染物的高选择性以及对卤素离子不敏感等优点使其成为当下研究热点。然而,国内外还没有针对催化剂结构/性质与PS-AOPs体系中非自由基路径调控的系统综述。基于此,本文介绍了1O2、电子转移和高价金属种三种典型非自由基路径的特点、生成机制及鉴定方法,并概括了缩小催化剂活性位点尺寸、在催化剂中引入杂原子和改变催化剂物理化学特性三种实现非自由基定向调控的方法及机理,最后展望了非自由基调控应往提升催化剂稳定性、完善自由基/非自由基贡献度区分方法、明确非自由基物种氧化有机污染物的机制以及深入研究活性物种生成路径或污染物降解路径的方向发展,为实现非自由基路径高效活化PS降解有机污染物提供理论依据。

关键词: 催化剂活化, 多相反应, 高级氧化, 非自由基, 定向调控, 单线态氧, 高价金属

Abstract:

In recent years, peroxydisulfate-based advanced oxidation processes (PS-AOPs) have been widely used for the removal of organic pollutants from wastewater, and their water purification effects are closely related to the type of active oxygen species induced by catalysts. The PS-AOPs system can degrade pollutants through radical (·OH and ·SO4-) or non-radical (1O2, electron transfer, and high-valent metal species) pathways. However, there are problems with the non-selective existence of radicals in heterogeneous systems, short action time, easy reaction with halogen ions to generate toxic by-products, and the consumption of radicals by various interfering ions (such as OH-, Cl-, CO32-) in wastewater, which reduces the amount of radicals acting on organic pollutants and affects the treatment effect. The high selectivity of non-radicals for electron-rich pollutants and insensitivity to halogen ions make them the focus of current research. However, there is no systematic review on the catalyst structure/property and non-radical pathway regulation in PS-AOPs systems at home and abroad. Based on this, this paper introduced the characteristics, generation mechanisms, and identification methods of the 1O2, electron transfer, and high-valent metal species three typical non-radical pathways, summarized the three methods and mechanisms of reducing the size of the catalyst active site, introducing heteroatoms into the catalyst, and changing the physical and chemical properties of the catalyst to achieve non-radical directed regulation, and finally outlined the directions of non-radical regulation to enhance catalyst stability, improve the method of distinguishing between radical/non-radical contributions, clarify the mechanism of non-radical species oxidizing organic pollutants, and deeply study the generation pathway or pollutant degradation pathway, in order to provide theoretical support for the efficient activation of non-radical pathways for PS to degrade organic pollutants.

Key words: catalyst activation, heterogeneous reaction, advanced oxidation, non-free radical, directional regulation and control, singlet oxygen, high-value metal

中图分类号: 

京ICP备12046843号-2;京公网安备 11010102001994号
版权所有 © 《化工进展》编辑部
地址:北京市东城区青年湖南街13号 邮编:100011
电子信箱:hgjz@cip.com.cn
本系统由北京玛格泰克科技发展有限公司设计开发 技术支持:support@magtech.com.cn