Zinc oxide nanoparticles (ZnONPs) -induced antioxidants and photocatalytic degradation activity from hybrid grape pulp extract (HGPE)

Abstract

The growing era of nanotechnology has attracted the attention of people towards the inclusion of nanoparticles in our day to day life. The conversion of copper (Cu) and silver (Ag) into nanomaterial for biomedical application has increased the urge of working with different metallic nanoparticles. Considering these facts, zinc nanoparticles (ZnO) are synthesized using biological sources like plants, fruits, bacteria, fungi, algae etc. The introduction of biological sources for the synthesis of ZnONPs will promote a safer and non-toxic approach. The biomolecules present in biological sources act as capping or coating agents to enhance the stability and potentials of the ZnONPs. In the present study aqueous extract of Vitis rotundifolia (Hybrid Grapes) pulp is used for the synthesis of ZnO nanoparticles (ZnONPs). The structural and chemical characterization of the synthesized ZnONPs was performed using various analytical. The excitation of absorption peak at 371 nm confirmed the synthesis of ZnONPs. Morphological characterization confirmed the formation of irregular hexagonal, crystalline ZnONPs with an average size of 23.56 nm. ZnONPs were further taken for determining the photocatalytic degrading potential against Malachite Green (MG) dye. After 150 min of incubation under dark condition the dye was completely degraded. The present result clearly suggest that ZnONPs synthesized using hybrid grapes pulp extract (HGPE) could be an active candidate for removing carcinogenic and toxic chemical dyes released from textile and dye industries. Further expanding the application of HGPE-ZnONPs will promote a remarkable bioremediation application against water pollution.