Fabrication of CoFe.sub.2O.sub.4-modified and HNTs-supported g-C.sub.3N.sub.4 heterojunction photocatalysts for enhancing MBT degradation activity under visible light

It is still a challenging work to realize the universality of photocatalytic materials for unselectively removing environmental pollutants in water. Here, a ternary magnetism CoFe.sub.2O.sub.4/g-C.sub.3N.sub.4/HNTs heterojunction photocatalyst is firstly prepared, and the morphology, crystalline pro...

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Bibliographic Details
Published in:Journal of materials science 2020-04, Vol.55 (10), p.4358
Main Authors: Zhu, Zhi, Ma, Changchang, Yu, Kesheng, Lu, Ziyang, Liu, Zhi, Yan, Yongsheng, Tang, Xu
Format: Article
Language:English
Subjects:
Magnetism
Nanotubes
Tetracycline
Tetracyclines
Water pollution
Online Access:Get full text
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Summary:It is still a challenging work to realize the universality of photocatalytic materials for unselectively removing environmental pollutants in water. Here, a ternary magnetism CoFe.sub.2O.sub.4/g-C.sub.3N.sub.4/HNTs heterojunction photocatalyst is firstly prepared, and the morphology, crystalline property, surface area, and magnetic recycling capability of the photocatalyst were investigated. The CoFe.sub.2O.sub.4/g-C.sub.3N.sub.4/HNTs shows a superior degradation efficiency for degrading 2-mercaptobenzothiazole (MBT) than that of pure g-C.sub.3N.sub.4. The high degradation performance that derives from the hollow structure of halloysite nanotubes (HNTs) can inhibit stacking of g-C.sub.3N.sub.4, which results in a larger specific surface area and more abundant reaction sites. Meanwhile, the heterojunction structure between g-C.sub.3N.sub.4 and CoFe.sub.2O.sub.4 improved the separation efficiency of charge carriers. In addition, the intermediate products, degradation pathway, and reaction mechanism of representative MBT pollutant over the CoFe.sub.2O.sub.4/g-C.sub.3N.sub.4/HNTs photocatalyst are revealed in depth. This work makes an important development.
ISSN:0022-2461
1573-4803
DOI:10.1007/s10853-019-04170-8