Green Synthesis of Zinc Oxide Nanoparticles Using Aqueous Extract of <i>Pavonia zeylanica</i> to Mediate Photocatalytic Degradation of Methylene Blue: Studies on Reaction Kinetics, Reusability and Mineralization.

ABSTRACT: Nanoparticles (especially zinc and titanium oxide) have been found to be effective in photodegrading pollutants (organic/inorganic) from industrial wastewater. Presently, this study aimed at biosynthesizing zinc oxide nanoparticles (ZnO-NPs) from the leaf extract of Pavonia zeylanica, a plant with significant medical value, and evaluating their photocatalytic properties against methylene blue (MB), an azo dye (100 mg L^-1, pH 7), using solar irradiation, along with the measurement of their reusability and mineralization efficiency. The characterization of the Pz-ZnO-NPs showed an absorbance peak at 313 nm, with a bandgap value of 3.04 eV and a size of 19.58 nm. This study's results show that the synthesized Pz-ZnO-NPs, upon treatment with MB dye after 2 h of solar irradiat

SUBMITTER: Purushotham D 

PROVIDER: S-EPMC12112004 | biostudies-literature | 2025 May

REPOSITORIES: biostudies-literature