SÍNTESIS HÍBRIDA (BIOSíNTESIS-HIDROTERMAL) Y CARACTERIZACIÓN DE Y(OH)3 DOPADO CON Eu3+

Abstract

The main motivation to carry out this work is it was observed the complete characterization of Y(OH)3 has not been reported as the objective in research studies, because Y(OH)3 has been used mostly as a precursor in the synthesis of other materials. Neither optimal time at which crystalline yttrium hydroxide is formed is known. Although hydrothermal synthesis has been carried out using other methods such as electrochemical, chemical, etc., the use of green tea extract to promote growth of crystals of some material has not been reported. A study of the hydrothermal synthesis of Y(OH)3 was carried out by varying the reaction time obtaining an optimal time of 12 h to achieve pure and crystalline Y(OH)3. Yttrium hydroxide was also obtained from a novel hybrid method combining the advantages of the hydrothermal method with the use of Camellia sinensis extract, which allowed the crystalline hydroxide to be synthesized and in a single phase using less time in the reaction (4 h). The hydroxide was subsequently doped with 5%w Europium using the best reaction conditions. Each of the samples were characterized by infrared spectroscopy, Raman spectroscopy, X-ray diffraction, scanning electron microscopy, dispersive energy X-ray spectroscopy, field emission scanning electron microscopy, visible ultraviolet spectroscopy, photoluminescence and X-ray photoelectronic spectroscopy. Once the materials were characterized separately, a luminescent response of the yttrium doped with europium was obtained, a complete study of the yttrium hydroxide was carried out and a novel hybrid synthesis method was developed.