Functionalization ZnAl₁_.₉Eu₀_.₁O₄/SiO₂ Nanoparticles Using Chitosan

Abstract

This work evaluated the use of chitosan as a biomolecule to functionalize the ZnAl 1 . 9 Eu 0 . 1 O 4 /SiO 2 nanoparticles with 3:1 w/w chitosan to nanoparticles. ZnAl 1.9 Eu 0.1 O 4 nanoparticles were obtained by combustion reaction and silanized with 3-aminopropyltriethoxysilane. After silanized chitosan were added to the diluted in 1% acetic acid. The materials were centrifuged and placed in an oven at 60 °C for solvent evaporation. ZnAl 1.9 Eu 0.1 O 4 nanoparticles silanized had a ZnAl 2 O 4 major phase and second phase EuAlO 3 . After functionalized ZnAl 1.9 Eu 0.1 O 4 nanoparticles showed characteristic crystalline phase of spinel and chitosan. The FTIR spectrum showed absorption bands characteristic of C=O, axial deformation of - CN and Si-O bands from the silane agent. By analysis SEM, observed in the chitosan impregnated particles of approximately spherical form, containing amorphous and crystalline phases, with smaller particles and larger 5μm. The higher mass loss was 88.3% observed for the functionalized chitosan nanoparticles.