Synthesis, Characterization and Silanization Spinel ZnAl&lt;sub&gt;1&lt;/sub&gt;&lt;sub&gt;.&lt;/sub&gt;&lt;sub&gt;9&lt;/sub&gt;Eu&lt;sub&gt;0&lt;/sub&gt;&lt;sub&gt;.&lt;/sub&gt;&lt;sub&gt;1&lt;/sub&gt;O&lt;sub&gt;4&lt;/sub&gt;

P.T.A Santos,Polyana T.A Santos,Ana Cristina Figueredo Melo Costa,P.M.A.G Araújo

doi:10.4028/www.scientific.net/msf.805.100

Abstract

This paper aims to synthesize by combustion reaction and silanilized of the ZnAl1.9Eu0.1O4, with silane agent 3-aminopropyltrimethoxysilane. The characterization of materials before and after silanization was investigated. Nanoparticles ZnAl1.9Eu0.1O4 was obtained according to the theory of propellants and explosives using the synthesis combustion reaction. The samples were deagglomerated and passed through a sieve of 325 mesh and added to 3-aminopropyltrimethoxysilane, followed by heat shock treatment by ultrasonic and microwave. Subsequently centrifuged and dried at 150 ° C for 24 hours. The samples before and after the silane were characterized by X-ray diffraction, infrared spectroscopy and thermogravimetric analysis. The results indicate the formation of a major phase spinel normal ZnAl2O4, and the EuAlO3 peaks as secondary phase. The FTIR spectra for ZnAl1.9Eu0.1O4 have absorption bands below 1000 cm-1, and after silanization showed bands of C = O, axial strain - CN and Si-O bands, which proves the silanization. The thermogravimetric curves showed good thermal stability, with mass loss around 30%.

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