The catalytic oxidation of organic pollutants in water and soil using layered double hydroxides and their composites: A critical review

IF 5.3 2区地球科学 Q2 CHEMISTRY, PHYSICAL

Applied Clay Science Pub Date : 2025-07-08 DOI:10.1016/j.clay.2025.107929

Zili Jiang , Zhichao Tang , Yaxian Hu , Hongyun Shao , Godwin A. Ayoko , Xiuxiu Ruan

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引用次数: 0

Abstract

Layered double hydroxides (LDH) exhibit excellent catalytic properties for use in the field of environmental remediation due to the tunable properties, large interlayer spaces, and chemical stability. This review underscores the crucial role of LDH materials as catalysts for addressing environmental challenges caused by organic pollutants. It provided a thorough overview of the advancements in LDH materials and their composites used in catalytic oxidation, emphasizing their potential as effective agents for wastewater treatment and soil remediation. At the core of this analysis was a critical examination of LDH and their composites in heterogeneous catalysis, mainly focusing on Fenton and Fenton-like reactions, and persulfate-based advanced oxidation processes aimed at efficiently removing organic pollutants such as dyes and micro-pollutants. Furthermore, the review also explored the complex mechanisms involved in removing these contaminants, encompassing both radical-mediated and non-radical pathways (such as electrostatic interaction and singlet oxygen generation), were thoroughly analysed. Finally, the review concluded with a forward-looking perspective on future research directions.

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层状双氢氧化物及其复合材料催化氧化水和土壤中的有机污染物：综述

层状双氢氧化物（LDH）由于其可调节的性质、大的层间空间和化学稳定性，在环境修复领域表现出优异的催化性能。这一综述强调了LDH材料作为催化剂在解决有机污染物引起的环境挑战中的重要作用。它全面概述了LDH材料及其复合材料在催化氧化中的应用进展，强调了它们作为废水处理和土壤修复有效剂的潜力。该分析的核心是对LDH及其复合材料在非均相催化中的关键研究，主要集中在芬顿和类芬顿反应，以及基于过硫酸盐的高级氧化工艺，旨在有效去除有机污染物，如染料和微污染物。此外，该综述还探讨了去除这些污染物的复杂机制，包括自由基介导和非自由基途径（如静电相互作用和单线态氧生成），并进行了深入分析。最后，对未来的研究方向进行了展望。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Clay Science 地学-矿物学

CiteScore

10.30

自引率

10.70%

发文量

289

审稿时长

39 days

期刊介绍： Applied Clay Science aims to be an international journal attracting high quality scientific papers on clays and clay minerals, including research papers, reviews, and technical notes. The journal covers typical subjects of Fundamental and Applied Clay Science such as: • Synthesis and purification • Structural, crystallographic and mineralogical properties of clays and clay minerals • Thermal properties of clays and clay minerals • Physico-chemical properties including i) surface and interface properties; ii) thermodynamic properties; iii) mechanical properties • Interaction with water, with polar and apolar molecules • Colloidal properties and rheology • Adsorption, Intercalation, Ionic exchange • Genesis and deposits of clay minerals • Geology and geochemistry of clays • Modification of clays and clay minerals properties by thermal and physical treatments • Modification by chemical treatments with organic and inorganic molecules(organoclays, pillared clays) • Modification by biological microorganisms. etc...