Construction of CeO2/CdS Heterostructure and Study on Photocatalytic Mechanism of Rhodamine B Degradation

A series of CeO 2 /CdS photocatalysts were prepared by simple solvothermal and auxiliary calcination using cerium nitrate as the precursor. Two different forms of CeO 2 (nanosheets (NF-CeO 2 ) and nanorods (NR-CeO 2 )) were successfully prepared and used to degrade rhodamine B (RhB) to study the pho...

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Bibliographic Details
Published in:Journal of inorganic and organometallic polymers and materials 2024, Vol.34 (1), p.175-189
Main Authors: Liu, Ziwei, Zhuang, Yanli, Dong, Limin, Mu, Hongxu, Li, Dan, Wang, Leiming, Tian, Shuo
Format: Article
Language:English
Subjects:
Catalysts
Catalytic activity
Cerium nitrate
Cerium oxides
Chemical composition
Chemistry
Chemistry and Materials Science
Composite materials
Heterostructures
Inorganic Chemistry
Nanorods
Organic Chemistry
Photocatalysis
Photocatalysts
Photodegradation
Photoelectric effect
Photoelectricity
Polymer Sciences
Rhodamine
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Summary:A series of CeO 2 /CdS photocatalysts were prepared by simple solvothermal and auxiliary calcination using cerium nitrate as the precursor. Two different forms of CeO 2 (nanosheets (NF-CeO 2 ) and nanorods (NR-CeO 2 )) were successfully prepared and used to degrade rhodamine B (RhB) to study the photocatalytic activity of the composites. On this basis, the effects of composite proportion and preparation technology on the photocatalytic activity of the composites were studied. The morphology, structure, photoelectric properties and chemical composition of the composites were analyzed. Compared with single photocatalysts (NR-CeO 2 and CdS), the NF-CeO 2 /CdS and NR-CeO 2 /CdS composite catalyst have stronger photocatalytic performance. In addition, capture experiments and ESR showed that both ∙ O 2 - and h + impacted on the RhB degradation. After four repeated cycles, NR-CeO 2 /CdS (1:6) showed stable RhB degradation activity. In the aspect of catalyst interface design, this work not only provides an effective method for the preparation of catalysts with high photodegradation rate and good reuse, but also provides a feasible idea for further research on the degradation of emerging pollutants by photocatalysts.
ISSN:1574-1443
1574-1451
DOI:10.1007/s10904-023-02815-5