Visible light driven photocatalytic and competent antioxidant properties of phyto-fabricated zinc oxide nanoparticles (ZnO-NPs) from Borreria hispida

Ramesh, Abhilash Mavinakere and Purushotham, Dhananjay and Kodandaram, Anju and Shilpa, Natarajamurthy and Singh, Sudarshana Brijesh and Aiyaz, Mohammed and Gowtham, Hittanahallikoppal Gajendram urthy and Rahdar, Abbas and Kaviyarasu, Kasinathan and Murali, Mahadevamurthy (2023) Visible light driven photocatalytic and competent antioxidant properties of phyto-fabricated zinc oxide nanoparticles (ZnO-NPs) from Borreria hispida. Journal of Molecular Structure, 1293 (136152). ISSN 00222860

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Abstract

Zinc oxide nanoparticles (ZnO-NPs) have gained considerable interest in biological and photocatalytic applications due to their distinctive physico-chemical characteristics. The study aimed to synthesize ZnO-NPs using the leaf extract of Borreria hispida, a medicinally important plant for its antioxidant and photocatalytic efficacy. The B. hispida mediated ZnO-NPs (Bh-ZnO-NPs) illustrated a characteristic peak at 304 nm with 3.45 eV bandgap energy during the spectral analysis. The Bh-ZnO-NPs XRD studies revealed stiff and narrow peaks with ∼21.87 nm in size. The SEM analysis revealed that the obtained Bh-ZnO-NPs were agglomerated and ZnO elemental purity of 98.23 was confirmed through EDS. The spectral results of Bh-ZnO-NPs obtained by the FT-IR affirmed that phyto-constituents participated in the reduction, capping and stabilization of the particles during the synthesis of nanoparticles. The BET surface area analysis of the Bh-ZnO-NPs confirmed that the particles exhibit a similar Type – IV isotherm curve as per IUPAC classification with 11.681 m2 g-1 and a surface roughness (Ra) value of 6.25 nm. The Bh-ZnO-NPs offered significant (p ≤ 0.05) radical scavenging activity, which was dose-dependent with IC50 value falling between 0.6 to 0.8 mg mL−1 among the evaluated test methods. Methyl red (MR) dye degradation tests employing phyto-fabricated Bh-ZnO-NPs resulted in dye degradation up to 94.22 after 40 min of solar irradiation and the decolorization of MR dye followed pseudo-first-order kinetics. In addition to those mentioned above, the fifth cycle of the photocatalyst's stability and reusability studies showed 84.8 dye degradation ability. The findings demonstrate that the phyto-fabricated ZnO-NPs from B. hispida have potent antioxidant and dye-degrading properties that can be investigated at an industrial scale. © 2023 Elsevier B.V.

Item Type:	Article
Additional Information:	Cited by: 20
Uncontrolled Keywords:	Antioxidants; Fabrication; Particle size analysis; Reusability; Spectrum analysis; Surface roughness; Synthesis (chemical); ZnO nanoparticles; Antioxidant properties; Biological applications; Borrerium hispida; Dye degradation; Methyl Red dye; Methyl-red; Photo-catalytic; Visible-light-driven; Zinc oxide nanoparticles; ZnO; II-VI semiconductors
Subjects:	B Life Science > Environmental Science
Divisions:	Department of > Environmental Science
Depositing User:	Mr Umendra uom
Date Deposited:	29 Nov 2025 09:43
Last Modified:	29 Nov 2025 09:43
URI:	http://eprints.uni-mysore.ac.in/id/eprint/18091

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