Author(s)

Yazmin Francisco¹, Dulce Medina^1*, Miguel Barron¹, Joan Reyes¹, Pedro Adrian Martinez², Angel de Jesus Morales², Elizabeth Garfias¹

¹Universidad Autónoma Metropolitana, Departamento de Materiales, Ciencias Básicas e Ingeniería, Reynosa Tamaulipas, México.
²Instituto Politécnico Nacional, ESIQIE, UPALM S/N, Mexico City, México.

The synthesis of the thenoyltrifluoroacetone compound doped with terbium, dysprosium and europium encapsulated in a silica matrix (TTA:Tb:Dy:Eu@SiO₂) were performed by the sol-gel method. The precursors to obtain the vitreous phase (SiO₂) were: Tetraethylorthosilicate (TEOS, C₈H₂O₄Si, 98%, Aldrich), and ethyl alcohol (CH₃CH₂OH, 99.5%, Meyer), distilled water and 0.05 ml of hydrochloric acid (HCl, Meyer). The sample with molar ratio 20:80 TTA:Tb:Dy:Eu@SiO₂ has the best emission intensity. Thermogravimetric analysis (TGA) shown that silica encapsulated samples decompose at lower temperatures than pure TTA:Tb:Dy:Eu luminescent material. Fourier Transform Infrared (IR-TF) shown the characteristic Si-O-Si bands that are presented at a wavelength of 1049, 853 and 440 cm^-1 confirming that the luminescent material is encapsulated in a silica matrix, finally X-ray diffraction (XRD) shown that TTA:Tb:Dy:Eu@SiO2 composite is amorphous.

Synthesis, Luminescence, Composite, Sol-Gel, Terbium, Dysprosium and Europium

Francisco, Y. , Medina, D. , Barron, M. , Reyes, J. , Martinez, P. , Morales, A. and Garfias, E. (2020) Synthesis of Tenoltrifluoroacetone Composite Doped with Terbium, Dysprosium and Europium Encapsulated in Silica Oxide Matrix. Journal of Surface Engineered Materials and Advanced Technology, 10, 63-74. doi: 10.4236/jsemat.2020.104005.