Co3O4/Molecular Sieve Catalyst Activated Peroxymonosulfate Degradation of Tetracycline Hydrochloride

IF 2.3 4区化学 Q3 CHEMISTRY, PHYSICAL

Catalysis Letters Pub Date : 2025-08-01 DOI:10.1007/s10562-025-05127-0

Rui Hu, Haiyin Wang, Jiahui Luo, Jianjun Song, Haiyuan Jia

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引用次数: 0

Abstract

Peroxymonosulfate (PMS)-based advanced oxidation processes (AOPs) have been proven to be an effective method for the removal of tetracycline in water. In this study, the Co₃O₄/molecular sieve catalyst synthesized by the incipient wetness impregnation method was used for PMS activation. The effect of specific surface area on the catalytic performance of Co₃O₄/molecular sieve catalyst was investigated and analyzed in detail by characterization techniques. In the Tetracycline hydrochloride (TCH) degradation experiment, the Co₃O₄/13X catalyst exhibited the highest specific surface area (490.584 m²/g) and provide abundant active sites, enabling 98.0% TCH degradation within 30 min under optimal conditions (1.5 g catalyst, 0.3 mM PMS, pH 8.0, 25℃), with a reaction rate constant (k_obs) of 0.0977 min^-1. In addition, the degradation mechanism of TCH was explored using electron paramagnetic resonance (EPR) spectroscopy and quenching experiments. It was confirmed that free radicals (SO₄^•−, •OH, O₂^•−) and non-free radical species (¹O₂) generated during the reaction play a crucial role in the degradation process of TCH. In summary, the Co₃O₄/13X catalyst, when activating PMS, exhibits a remarkable synergistic effect on the degradation of TCH, and shows good repeatability and environmental adaptability. This study provides valuable insights into the design and optimization of catalysts for degrading antibiotic pollutants in water treatment processes.

Graphical Abstract

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Co3O4/分子筛催化过氧单硫酸酯降解盐酸四环素

基于过氧单硫酸盐（PMS）的高级氧化工艺（AOPs）已被证明是一种去除水中四环素的有效方法。本研究采用初湿浸渍法合成的Co3O4/分子筛催化剂进行PMS活化。采用表征技术详细研究了比表面积对Co3O4/分子筛催化剂催化性能的影响。在盐酸四环素（TCH）降解实验中，Co3O4/13X催化剂具有最高的比表面积（490.584 m2/g）和丰富的活性位点，在最佳条件下（1.5 g催化剂，0.3 mM PMS, pH 8.0, 25℃），30 min内可降解98.0% TCH，反应速率常数（kobs）为0.0977 min-1。此外，利用电子顺磁共振（EPR）光谱和猝灭实验探讨了TCH的降解机理。证实了反应过程中产生的自由基（SO4•−、•OH、O2•−）和非自由基（1O2）在TCH降解过程中起着至关重要的作用。综上所述，Co3O4/13X催化剂在活化PMS时，对TCH的降解表现出显著的协同效应，并表现出良好的可重复性和环境适应性。该研究为水处理过程中降解抗生素污染物的催化剂的设计和优化提供了有价值的见解。图形抽象

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来源期刊

Catalysis Letters 化学-物理化学

CiteScore

5.70

自引率

3.60%

发文量

327

审稿时长

1 months

期刊介绍： Catalysis Letters aim is the rapid publication of outstanding and high-impact original research articles in catalysis. The scope of the journal covers a broad range of topics in all fields of both applied and theoretical catalysis, including heterogeneous, homogeneous and biocatalysis. The high-quality original research articles published in Catalysis Letters are subject to rigorous peer review. Accepted papers are published online first and subsequently in print issues. All contributions must include a graphical abstract. Manuscripts should be written in English and the responsibility lies with the authors to ensure that they are grammatically and linguistically correct. Authors for whom English is not the working language are encouraged to consider using a professional language-editing service before submitting their manuscripts.