Biogenic preparation of ZnO, CaO, and ZnO-CaO nanocomposites and its influence on agro-morphological characteristics of mung bean.

In this study, nanomaterials (ZnO and CaO) and ZnO-CaO nanocomposites (ZnCaO; ZnCaO; ZnCaO) were prepared using co-precipitation method and physico-chemically characterized by XRD, FT-IR, and SEM with EDAX analysis. The XRD pattern of ZnO nanomaterials exhibits hexagonal wurtzite structure and CaO nanomaterials exhibit face-centered cubic (FCC) structure whereas nanocomposites (ZnCaO, ZnCaO, ZnCaO) exhibit both hexagonal phase of ZnO and cubic phase of CaO. The SEM images of ZnO-CaO nanocomposites show the well-distributed clusters composed of ZnO and CaO nanoparticles with most of the particles are spherical and some of the particles are rod- and cubic-like morphology.