Degradation of Tetracycline Hydrochloride via Activation of Peroxymonosulfate by Magnetic Nickel–Cobalt Ferrite: Role of High-Valent Metal Species as Primary Reactive Agents

IF 1.4 4区环境科学与生态学 Q4 WATER RESOURCES

Water SA Pub Date : 2025-02-20 DOI:10.3390/w17050616

Hangang Xie, Mingmei Ding, Hang Xu

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引用次数: 2

Abstract

Non-radical-based advanced oxidation processes, particularly those dominated by high-valent metals, have caught a great deal of attention because of their exceptional degradation selectivity and robust interference resistance. This study reports the synthesis of a novel ferrite, designated as Co0.5Ni0.5Fe2O4, through a solvothermal reaction, aimed at activating PMS for the removal of TCH from water. It was observed that calcination time played an important role in adjusting the particle size of the catalyst, which subsequently increased its surface area. This enlargement, in turn, led to an increase in active sites, ultimately enhancing the catalytic efficiency. Within the Co0.5Ni0.5Fe2O4/PMS system, high-valent metals Fe(IV) and Co(IV) became prominent as the primary active species, with O21 serving as a secondary contributor. The activation mechanism of PMS was thoroughly analyzed and discussed. Co0.5Ni0.5Fe2O4 exhibited remarkable stability in complex reaction environments and during multiple recycling tests, maintaining a TCH removal efficiency exceeding 98%. This study not only increases awareness of the interaction between catalyst structure and performance but also provides a viable platform for high-valent metal-dominated ferrite catalysts.

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磁性镍钴铁氧体活化过氧单硫酸盐降解盐酸四环素：高价金属作为主要活性剂的作用

非自由基基高级氧化工艺，特别是以高价金属为主的氧化工艺，因其优异的降解选择性和强大的抗干扰能力而受到广泛关注。本研究通过溶剂热反应合成了一种新型铁氧体Co0.5Ni0.5Fe2O4，旨在激活PMS去除水中的TCH。结果表明，煅烧时间对催化剂粒径的调节有重要作用，从而增加了催化剂的表面积。这种扩大反过来又导致活性位点的增加，最终提高催化效率。在Co0.5Ni0.5Fe2O4/PMS体系中，高价金属Fe（IV）和Co（IV）成为主要的活性物质，O21是次要的贡献者。对PMS的活化机理进行了深入的分析和探讨。Co0.5Ni0.5Fe2O4在复杂反应环境和多次循环试验中表现出显著的稳定性，对TCH的去除率保持在98%以上。该研究不仅提高了人们对催化剂结构与性能之间相互作用的认识，而且为高价金属为主的铁氧体催化剂的研究提供了一个可行的平台。

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

Water SA 环境科学-水资源

CiteScore

2.80

自引率

6.70%

发文量

审稿时长

18-36 weeks

期刊介绍： WaterSA publishes refereed, original work in all branches of water science, technology and engineering. This includes water resources development; the hydrological cycle; surface hydrology; geohydrology and hydrometeorology; limnology; salinisation; treatment and management of municipal and industrial water and wastewater; treatment and disposal of sewage sludge; environmental pollution control; water quality and treatment; aquaculture in terms of its impact on the water resource; agricultural water science; etc. Water SA is the WRC’s accredited scientific journal which contains original research articles and review articles on all aspects of water science, technology, engineering and policy. Water SA has been in publication since 1975 and includes articles from both local and international authors. The journal is issued quarterly (4 editions per year).