Hibiscus subdariffa leaf extract mediated 2-D fern-like ZnO/TiO2 hierarchical nanoleaf for photocatalytic degradation

Abstract

Green synthesized nanoparticles are utilized as a photocatalyst for the degradation of an organic dye such as methylene blue. In this study, Hibiscus subdariffa leaf extract act as a capping agent. 2-D fern ZnO/TiO2 hierarchical Nanoleaf was prepared by a self-assembled route. The XRD studies have revealed the hexagonal wurtzite structure of ZnO and a single phase of anatase crystalline form of TiO2. The 2-D fern hierarchical patterns showed needle-like morphologies having a large surface area to volume ratio with a wide absorption band. Compared with the cauliflower structure of ZnO nanoparticles, it's charge carrier recombination and transfer resistance are low. A high-performance of photocatalytic degradation and photomineralization were observed on the 2-D fern ZnO/TiO2 nanoleaf, under UV-visible irradiation compared to HS-ZnO.