Morphological and Thermal Properties of low Temperature Preparation zinc-tin oxide/chitosan Hybrid Composite 

By : M.Karpuraranjith, S.Thambidurai

Page No: 185-195

Abstract
In this present work, zinc-tin oxide/chitosan hybrid composite was prepared by chemical precipitation method using chitosan as biosurfactant, ZnCl2 and SnCl2 as source materials and sodium hydroxide as precipitating agent. Structural and morphological features of as prepared hybrid composites were studied. Fourier transform infrared (FT-IR) spectroscopy of the hybrid composites revealed that the formation of bond between ZnO, SnO2 and chitosan matrix. X-ray diffraction (XRD) pattern indicates that the sizes of crystallites are in ~ 4.2-27 nm range. From High resolution scanning electron microscopy (HR-SEM) observation, the morphology of hybrid composites forms spherical shape and spherutlite structure. The elemental compositions of (carbon, nitrogen, zinc, tin and oxygen) hybrid composite were confirmed by EDAX analysis. The zinc-tin oxide/chitosan hybrid composite exhibited higher thermal stability than chitosanZnO and chitosan-SnO2 composites. Hence it can be used for various applications such as sensing, catalysis, optoelectronic devices and dye removal process.

Authors :
M.Karpuraranjith and S.Thambidurai : Bio-nanomaterials Research Lab, Department of Industrial Chemistry, School of Chemical Sciences, Alagappa University, Karaikudi-630003, Tamil Nadu, India.