Synthesis of Tenoltrifluoroacetone Composite Doped with Terbium, Dysprosium and Europium Encapsulated in Silica Oxide Matrix

• 作者: Angel de Jesus Morales Dulce Medina Elizabeth Garfias Joan Reyes Miguel Barron Pedro Adrian Martinez Yazmin Francisco
• 来源期刊: 表面工程材料与先进技术期刊(英文)
• 学科: 化学
• 关键词: Synthesis LUMINESCENCE COMPOSITE Sol-Gel TERBIUM Dysprosium and Europium
• 年，卷（期）: 2020,（4）
• 页码范围: 63-74
• 页数: 12页
• 分类号: O61

摘要

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^{<span style="color:#4F4F4F;font-family:-apple-system, "font-size:16px;white-space:normal;background-color:#FFFFFF;">&#45</span>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.