Role of pH in Modulating the Physicochemical Properties of Erbium-doped MoO3/SiO2 Nanoparticles
Year: 2025
Type: article
Abstract: Molybdenum trioxide (MoO3) coated with SiO2 layered nanoparticles were prepared using Stober process by wet chemical method with pH adjusted to 9, 10 and 11. The physicochemical properties of Er:MoO3/SiO2, such as phase confirmation, quantum confinement, surface morphology, and shape were investigated by X-ray diffraction analysis, field emission scanning electron microscopy, Raman spectroscopy, FTIR and photoluminescence spectroscopy. The vibrational behaviour of chemical bonds was analyzed by Fourier transform infrared spectroscopy. The non-stoichiometric composition and the variation in composition of as prepared samples as well as rare earth ion-doped samples were confirmed by energy dispersive X-ray analysis. The optical behaviour of the defect-related emissions varied with pH and doping with the luminescent rare earth element erbium, further illustrated the tunable nature of the optical response. This work emphasizes upconverting properties of Er-doped MoO3/SiO2 nanoparticles for versatile applications.
Authors: L. Jayanthi, P. Dhivya, K. Kalaivani, M. Elango
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W4415092040
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