Urchin-like Co3O4 growth on porous metakaolin-based geopolymer spheres for catalytic degradation of chlortetracycline antibiotics

IF 2.9 3区物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY

The European Physical Journal Plus Pub Date : 2025-08-12 DOI:10.1140/epjp/s13360-025-06666-6

Yingjie Qiao, Yang Sun, Jianlv Cui, Zhaolu Yin, Ting Zheng, Haize Jin, Lili Zhang, Guoxing Sun, Chengying Bai

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引用次数: 0

Abstract

Porous metakaolin-based geopolymer spheres as catalytic supports with various diameters were prepared using suspension-solidification, suspension-dispersion-solidification, and direct molding methods. Urchin-like Co₃O₄ was in situ grown on the surface of the spherical porous catalytic support. Four catalytic supports and catalytic routes (photo, Fenton-like, sodium percarbonate, and peroxymonosulfate) were compared. Co₃O₄/geopolymers by direct molding with peroxymonosulfate were optimized and a high degradation efficiency of 86% for chlortetracycline hydrochloride within 90 min. The catalytic mechanism was elaborated. Additionally, the Co₃O₄/geopolymer composites showed good repeatability, maintaining a degradation efficiency of 78% after four consecutive cycles.

Graphical Abstract

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在多孔偏高岭土聚合物球上生长海胆样Co3O4催化降解四环素类抗生素

采用悬浮-固化、悬浮-分散-固化和直接成型三种方法制备了不同粒径的偏高岭土聚合物微球作为催化载体。在球形多孔催化载体表面原位生长海胆样Co3O4。比较了四种催化载体和催化途径（光催化、类芬顿催化、过碳酸钠催化和过氧单硫酸）。优化了用过氧单硫酸盐直接成型的Co3O4/地聚合物，在90 min内对盐酸氯四环素的降解效率高达86%，并阐述了催化机理。此外，Co3O4/地聚合物复合材料具有良好的重复性，连续4次循环后降解效率保持在78%。图形抽象

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来源期刊

The European Physical Journal Plus PHYSICS, MULTIDISCIPLINARY-

CiteScore

5.40

自引率

8.80%

发文量

1150

审稿时长

4-8 weeks

期刊介绍： The aims of this peer-reviewed online journal are to distribute and archive all relevant material required to document, assess, validate and reconstruct in detail the body of knowledge in the physical and related sciences. The scope of EPJ Plus encompasses a broad landscape of fields and disciplines in the physical and related sciences - such as covered by the topical EPJ journals and with the explicit addition of geophysics, astrophysics, general relativity and cosmology, mathematical and quantum physics, classical and fluid mechanics, accelerator and medical physics, as well as physics techniques applied to any other topics, including energy, environment and cultural heritage.