A Facile Microwave-Assisted Hydrothermal (MAH) Method of CdWO<sub>4</sub>/CdMoO<sub>4</sub> Heterostructures and Their Photocatalytic Properties

In this study, CdWO<sub>4</sub>/CdMoO<sub>4</sub> powders’ heterostructures were synthesized using the microwave-assisted hydrothermal method, characterized, and evaluated for their photocatalytic properties. The samples were analyzed using X-ray diffraction (XRD), Raman and...

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Bibliographic Details
Main Authors: Nivaldo F. Andrade Neto, Onecima B. M. Ramalho, Marcio D. Teodoro, Mauricio R. D. Bomio, Fabiana V. Motta
Format: Article
Language:English
Published: MDPI AG 2025-05-01
Series:Ceramics
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Online Access:https://www.mdpi.com/2571-6131/8/2/52
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Summary:In this study, CdWO<sub>4</sub>/CdMoO<sub>4</sub> powders’ heterostructures were synthesized using the microwave-assisted hydrothermal method, characterized, and evaluated for their photocatalytic properties. The samples were analyzed using X-ray diffraction (XRD), Raman and ultraviolet-visible (UV-Vis) spectroscopy, field-emission scanning electron microscopy (FESEM), and photoluminescence (PL). The photocatalytic performance was assessed using methylene blue as a model pollutant. XRD patterns and Raman spectra confirmed the formation of heterostructures containing the Wolframite phase of CdWO<sub>4</sub> and the Scheelite phase of CdMoO<sub>4</sub>. FESEM micrographs revealed that the CdWO<sub>4</sub> phase exhibits a plate-like morphology, while the CdMoO<sub>4</sub> phase consists of irregular nanoparticles. Photocatalytic tests demonstrated that the 20Mo sample exhibited the best performance, degrading 96% of the dye after 2 h of reaction. The findings of this study indicate that CdWO<sub>4</sub>/CdMoO<sub>4</sub> heterostructures hold significant potential for photocatalytic applications in the degradation of cationic dyes.
ISSN:2571-6131