Investigation of sustainable Ag-WO3 nanoparticles for environmental & photocatalytic remediation against methyl orange and its antimicrobial efficiency

Iqbal, T. and Bilal, H. and Sumera, Afsheen and Rizvi, H. I. and Sabah, Kausar and Munir, R. M. and El-Serehy, H. A. and Al-Maswari, B. M. (2025) Investigation of sustainable Ag-WO3 nanoparticles for environmental & photocatalytic remediation against methyl orange and its antimicrobial efficiency. Materials Today Communications, 42. ISSN 2352-4928

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Abstract

The basic research problem addressed is the effective degradation of pollutants, such as methyl orange (MO) dye, using photocatalysts in wastewater treatment. The problem lies in improving the photocatalytic efficiency and stability of these catalysts. The objective of this study is to synthesize and evaluate the photocatalytic perfor- mance of tungsten trioxide (WO3) and silver-doped WO3 nanoparticles (NPs) for the degradation of MO dye under visible light. A convenient and effective coprecipitation technique was employed to synthesize WO3 and Ag-WO3 NPs. The optical, structural, and spectral properties of the NPs were thoroughly examined using scan- ning electron microscopy (SEM), UV–vis spectroscopy, X-ray diffraction (XRD), photoluminescence (PL) spec- troscopy, and Fourier-transform infrared spectroscopy (FTIR). The role of silver in reducing the photogenerated electron/hole pair recombination rate and reducing the band gap from 2.94 eV to 2.08 eV for direct bandgap transitions was also investigated. The synthesized NPs demonstrated a higher photocatalytic activity due to their smaller size, which have higher surface area-to-volume ratio and provides more active adhesion sites. The 4 % Ag-doped WO3 catalyst achieved a remarkable 90 % degradation of MO dye within 180 minutes. This enhancement in performance is attributed to the Burstein-Moss effect that show the most promising results. The exceptional photocatalytic activity of the 4 % Ag-doped WO3 catalyst show its possible applications in waste- water treatment.

Item Type:	Article
Uncontrolled Keywords:	Ag-WO3, Photocatalysis, Methyl Orange, XRD, FT-IR
Subjects:	C Chemical Science > Chemistry
Depositing User:	Ms Varalakshmi
Date Deposited:	04 Nov 2025 07:32
Last Modified:	04 Nov 2025 07:32
URI:	http://eprints.uni-mysore.ac.in/id/eprint/17903

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