Citation

Basavaraju, N. and Shwetha, H. N. and Ravikumar, C. R. and Khasim, Syed and Tan, K. B. and Kelele, Kiflom Gebremedhn and Chan, K. Y. and Murthy, H. C. Ananda (2025) Aloe Vera–Assisted Synthesis of Dy‐Doped MgNb2O6 for Sustainable Sensing and Photocatalytic Applications. Journal of Nanotechnology, 2025 (1). ISSN 1687-9503

Text Aloe Vera–Assisted Synthesis of Dy‐Doped MgNb2O6 for Sustainable Sensing and Photocatalytic Applications.pdf - Published Version Restricted to Repository staff only Download (4MB)

Abstract

Tis study introduces a novel, cost-efective, and combustion synthesis approach for synthesizing dysprosium-doped magnesium niobium oxide (Dy: MNbO) nanoparticles (NPs) via a solution combustion method utilizing aloe vera gel as a green fuel. Te use of aloe vera gel not only simplifes the synthesis process but also enhances the ecocompatibility of the method, making it a signifcant advancement over conventional techniques. Advanced spectral techniques were employed to characterize the Dy: MNbO NPs. PXRD analysis revealed that the average crystalline size of the NPs was approximately 45 nm. Te energy band gap of the synthesized Dy: MNbO NPs was determined to be in the range of 4-5 eV. SEM analysis showed the presence of distinctly agglomerated, lump-like structures. Te photocatalytic performance of Dy: MNbO NPs was evaluated for the degradation of industrial dyes, specifcally direct green (DG) dye, under UV light irradiation. Among diferent doping concentrations, the 4 mol% Dy: MNbO NPs exhibited the highest photocatalytic efciency, achieving an 82% degradation. In comparison, the degradation rates for other doping concentrations were 58% for 2 mol%, 62% for 6 mol%, and 75% for 8 mol%. Electrochemical analyses using 4 mol% Dy: MNbO NPs as a modifed electrode were performed in a 0.1 M HCl electrolyte solution. Cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) confrmed the reversibility of the electrode reaction. Te sample demonstrated excellent performance in electrochemical sensing applications, specifcally for detecting ibuprofen and glucose molecules.

Item Type:	Article
Uncontrolled Keywords:	Electrochemical sensor
Subjects:	T Technology > TP Chemical technology > TP155-156 Chemical engineering
Divisions:	Faculty of Engineering (FOE)
Depositing User:	Ms Rosnani Abd Wahab
Date Deposited:	27 May 2025 08:48
Last Modified:	27 May 2025 08:48
URII:	http://shdl.mmu.edu.my/id/eprint/13831

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