ZnAl1.9Eu0.1O4 Nanoparticles Functionalized with Methylmethacrylate and Ethylenediamine Monomer Mixtures

P.T.A. Santos; Polyana T.A. Santos; P.M.A.G. Araújo; A.C.F.M. Costa

doi:10.4028/www.scientific.net/MSF.805.106

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HomeMaterials Science ForumMaterials Science Forum Vol. 805ZnAl1.9Eu0.1O4 Nanoparticles Functionalized with...

ZnAl₁_.₉Eu₀_.₁O₄ Nanoparticles Functionalized with Methylmethacrylate and Ethylenediamine Monomer Mixtures

Abstract:

This work aim to functionalize the ZnAl_1.9Eu_0.1O₄ spinel with ethylenediamine and methylmethacrylate monomer mixtures. ZnAl_1.9Eu_0.1O₄ nanoparticles 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 ZnAl₂O₄ cubic normal spinel and the secondary phase EuAlO₃. The FTIR spectra for ZnAl_1.9Eu_0.1O₄exhibit absorption bands below 1000 cm ^-1, and after the functionalization showed two conjugate bands that were attributed to the presence of free NH₂ groups 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 lines ⁵D₀ → ⁷F₀, ⁷F₁ → ⁵D₀, ⁵D₀ → ⁷F₂, ⁷F₃ → ⁵D₀ and ⁵D₀ → ⁷F₄ and luminescence quantum yield of 58%, but the sample functionalized with a mixture monomers showed an increase in intensity on transition ⁵D₀ → ⁷F₂and quantum yield of 67%.

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Materials Science Forum (Volume 805)

Pages:

106-110

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.805.106

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Online since:

September 2014

Authors:

P.T.A. Santos, Polyana T.A. Santos, P.M.A.G. Araújo, A.C.F.M. Costa*

Keywords:

Ethylenediamine, Functionalization, Methylmethacrylate, ZnAl_1.9Eu_0.1O₄

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