Solvothermal synthesis of mesoporous Eu2O3–TiO2 composites

✍ Scribed by Zhimin Liu; Jianling Zhang; Buxing Han; Jimin Du; Tiancheng Mu; Yong Wang; Zhenyu Sun

• Publisher: Elsevier Science
• Year: 2005
• Tongue: English
• Weight: 169 KB
• Volume: 81
• Category: Article
• ISSN: 1387-1811
• DOI: 10.1016/j.micromeso.2005.01.028

✦ Synopsis

Here we report a facile route to synthesize mesoporous Eu 2 O 3 -TiO 2 composites by simultaneous decomposition of europium nitrate hexahydrate and hydrolysis of tetrabutyl titanate in ethanol solution with Pluronic P123 as a pore-directing agent at a relatively low temperature of 120 °C. The as-prepared products were characterized with different techniques, including X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), powder X-ray diffraction (XRD), nitrogen adsorption/ desorption analysis, and photoluminescence spectroscopy. TEM and N 2 adsorption/desorption analysis show that the Eu 2 O 3 -TiO 2 composite possesses mesoporous structures. The XRD results demonstrate that the products are amorphous. Besides the emission band of TiO 2 at about 450 nm, the composite exhibits emission bands at 590 and 615 nm that originate from Eu 3+ .