Facile green synthesis of CuWO4 nanoparticles and its application for the photocatalytic degradation of rose Bengal dye under visible light irradiation

• Published in: Inorganic chemistry communications 2025-02, Vol.172, Article 113706
• Main Authors: Vinay Kumar, E, Mallikarjuna Swamy, C, Anil Rao, H.N., Shashank, M, Deepa, K, Suma, G.R., Navya Rani, M, Nagaraju, G
• Format: Article
• Language: English
• Subjects: Butea monosperma; Combustion; CuWO4; Photocatalytic degradation; Rose bengal
• ISSN: 1387-7003
• DOI: 10.1016/j.inoche.2024.113706

[Display omitted] •CuWO4 nanoparticles (NPs) were synthesized by green combustion method.•Butea Monosperma leaves extract used as reducing agent and green fuel in synthesis.•Superior photocatalytic activity towards Rose Bengal dye. In this work, CuWO4 nanoparticle (NPs) production was carried out using an eco-friendly and cost-effective green combustion approach. Leaf extract from Butea monosperma was utilized as a green fuel and reducing agent during synthesis instead of chemicals. X-ray diffraction, Fourier transform infrared spectroscopy, UV diffused reflectance spectroscopy, Photoluminescence, Electrochemical impedance spectroscopy, Scanning electron microscope and Transmission electron microscope analysis were among the advanced characterization methods that were applied to investigate the physicochemical properties of the synthesized materials in detail. Only one phase found in the sample that was calcined at 500 °C was triclinic CuWO4. With a band-gap energy (Eg) of roughly 2.21 and 2.25 eV, the synthesized NPs, which were calcined at 500 °C, had a strong capability of visible light absorption. The developed CuWO4 NPs photocatalytic activity was examined through the Rose Bengal (RB) dye degradation in response to visible light stimulation. The CuWO4 sample demonstrated exceptional photocatalytic capacity for breaking down RB, even when exposed to the supplied visible light. After being exposed to visible light for 150 min the synthesized CuWO4 photocatalytically degraded over 96 % RB. The catalyst’s degradation efficiency was 89 % after four cycles, showing a reasonably consistent catalytic function. The exceptional photocatalytic efficiency and strong cycling stability of this special nanostructure photocatalyst offer a quick, easy, and affordable way to degrade organic contaminants by photocatalysis.