Effective degradation of Rhodamine B using α-MoO 3 nanoplates synthesised using thermal decomposition method

Abstract MoO 3 nanoplates were effectively synthesized using simple thermal decomposition method and comprehensively characterized for structural, optical, dielectric properties. Structural analysis, primarily through x-ray diffraction (XRD), unequivocally confirmed the orthorhombic phase of the syn...

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Published in:Physica scripta 2023-12, Vol.98 (12), p.125926
Main Authors: Mohan, Lakshmi, Devu, B, Menon, Radhika R, Surendran, Malavika, P, Kathirvel, Maruthamani, D, P, Balraju, kumar S, Saravana
Format: Article
Language:English
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Summary:Abstract MoO 3 nanoplates were effectively synthesized using simple thermal decomposition method and comprehensively characterized for structural, optical, dielectric properties. Structural analysis, primarily through x-ray diffraction (XRD), unequivocally confirmed the orthorhombic phase of the synthesized MoO 3 nanoplates, establishing their crystalline structure. The optical properties of MoO 3 nanoplates were investigated using UV- Vis diffused reflectance spectra, revealing an optical bandgap of 3.0 eV. Photoluminescence (PL) analysis uncovered sub-band transitions within the nanoplates, shedding light on their luminescent behavior and further emphasizing their optical properties. Raman spectroscopy reaffirmed the orthorhombic structure of the MoO 3 nanoplates, providing additional structural confirmation. Morphological and compositional analyses, carried out through field emission scanning electron microscopy (FESEM) and energy dispersive x-ray spectroscopy (EDS), showcased the formation of self-assembled hexagonal plate-like structures. This unique morphology holds promise for various applications, especially in photocatalysis. Dielectric and alternating current (AC) conductivity studies confirmed the semiconducting nature of MoO 3 nanoplates, a crucial characteristic for their utilization in electronic devices and catalytic processes. Based on these results photocatalytic activity of the synthesized MoO 3 was tested for the degradation of Rhodamine- B in aqueous solution. The complete degradation of Rhodamine B obtained demonstrates the efficacy of MoO 3 as a photocatalyst, demonstrating its efficacy in environmental remediation and water purification.
ISSN:0031-8949
1402-4896
DOI:10.1088/1402-4896/ad05ee