Biosynthesis of zinc oxide using banana leaves: structural and optical characterization reviews / Mohamad Yusuf Darman and Ts. Dr. Mohd Zaki Mohd Yusoff

Nanotechnology as call as nanomaterials is the wide scope of study and application of extremely nano in size can be used related to all the other science fields. Zinc Oxide (ZnO) material notify that it is valuable material in terms of properties, criteria, applications and mechanisms. The characterization of ZnONPs has been studied by using a few instruments to identify a kind of parameters. There are UV-Vis, FT-IR, XRD, FT- Raman, Photoluminescence (PL) and SEM are used. The biosynthesis of NPs ZnO use is much better and affordable because the process provide more eco-friendly, economical, free toxic, and easy to compose rather than chemical and physical methods. The objective of this study is to sort-out the best biological or green synthesis by using bananas leaves for fabrication the high quality of ZnONPs and to report the past, current and latest of structural and optical properties of ZnO using banana leaves. The process of preparation of ZnONPs is the preparation of the banana leaves extract, synthesis and purification and characterization of optical, structural and surface morphology. The best technique for growth ZnONPs using banana leaves extraction is by using zinc nitrate hexahydrate solution as metal precursor. The surface morphological of ZnONPs was obtained by SEM. The analysis review shows that crystal shape of the ZnONPs was in spherical, hexagonal structure and agglomerate nanocrystallite. Next, XRD analysis review shows the purity and particles size of ZnONPs. The crystallinity of the nanoparticles depends on the temperature behaviour. Furthermore, PL spectroscopy analysis review is obtained for inspects optical property from the peak intensity. A few chemical functional groups are identified by using FTIR and FT-Raman spectroscopy analysis review where ZnONPs by using banana leaves extract consist of bioactive compounds. The size of a crystalline particle change which increases or decreases some of the phonons or vibrational modes due to volume of the particle ZnONPs.