Abstract
This work aim to functionalize the ZnAl1.9Eu0.1O4spinel with ethylenediamine and methylmethacrylate monomer mixtures. ZnAl1.9Eu0.1O4nanoparticles were obtained according to the theory of propellants and explosives by combustion reaction. The samples were added to the silane agent 3-aminopropyltriethoxysilane. After silanized were functionalized with a monomers mixture. By X-ray diffractogram, it was observed the formation of a major phase of ZnAl2O4cubic normal spinel and the secondary phase EuAlO3. The FTIR spectra for ZnAl1.9Eu0.1O4exhibit absorption bands below 1000 cm-1, and after the functionalization showed two conjugate bands that were attributed to the presence of free NH2groups and the binding of oxygen to the group NH2, and strips Si-O, originating from the silane agent. The emission spectra for samples before and after functionalization showed spectral lines5D0→7F0,7F1→5D0,5D0→7F2,7F3→5D0and5D0→7F4and luminescence quantum yield of 58%, but the sample functionalized with a mixture monomers showed an increase in intensity on transition5D0→7F2and quantum yield of 67%.
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