Synthesis and Characterization Nanoparticles ZnAl<sub>1.94</sub>(Yb:Er)<sub>0.06</sub>O<sub>4</sub> Functionalized with Chitosan

Abstract

This work aims to synthesize combustion reaction, functionalized with chitosan nanoparticles and characterize ZnAl1.94(Yb:Er)0.06O4, codoped with x = 0.06 mol in the proportion 5:1 of Yb:Er. Nanoparticles before and after functionalization were characterized by XRD, TGA/DTA, FTIR and SEM. The results show that before and after functionalization presented ZnAl2O4majority phase and Al2Yb4O as secondary phase. Multiple bands around 1100 cm-1and 1040 cm-1corresponding to the asymmetric stretching Si-O confirms the functionalization of nanoparticles. Nanoparticles presented before functionalization morphology heterogeneous, consisting of clusters of particles with near-spherical shape, large particle size distribution, consisting of large clusters with size around 3 µm and smaller clusters in the shape of plates with size in order of 0.5 µm. After functionalization, the morphology shows the formation of a film consisting of amorphous phase and crystalline phase. The mass loss for the nanoparticles before and after functionalization was 7.2 and 39%, respectively.