Functionalization ZnAl_1.9Eu_0.1O₄/SiO₂ Nanoparticles Using Chitosan

Abstract:

This work evaluated the use of chitosan as a biomolecule to functionalize the ZnAl_1.9Eu_0.1O₄/SiO₂ nanoparticles with 3:1 w/w chitosan to nanoparticles. ZnAl_1.9Eu_0.1O₄ 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_1.9Eu_0.1O₄ nanoparticles silanized had a ZnAl₂O₄ major phase and second phase EuAlO₃. After functionalized ZnAl_1.9Eu_0.1O₄ 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.

• Periodical: Materials Science Forum (Volume 805)
• Pages: 111-115
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.805.111
• Online since: September 2014
• Authors: P.T. A. Santos, C.M. Furtado, Polyana T.A. Santos, A.C.F.M. Costa*
• Keywords: 3-Aminopropyltrimethoxysilane, Chitosan, Functionalization

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