Abstract

GUTIERREZ, M. P.  and  CASTELLANOS, M. A.. Síntesis por el método sol-gel aplicado al estudio del polimorfismo en nanopartículas de TiO₂. Mundo nano [online]. 2011, vol.4, n.1, pp.67-73.  Epub Sep 06, 2021. ISSN 2448-5691.  https://doi.org/10.22201/ceiich.24485691e.2011.1.50990.

The aim of this work is to design a laboratory experiment for the Materials Chemistry course which is part of the new chemistry undergraduate program in the Facultad de Química-UNAM. The included guideline will allow the students to achieve the aims of the laboratory experiment. They will become familiar with the use of the sol-gel method to synthesize nanometric ceramic particles which have important industrial and technological applications such as titanium dioxide (TiO2). The students will learn the advantages and disadvantages of using the sol-gel method and which variables should be controlled in the experiment. Once the students have synthesized the product they will use the x-ray powder diffraction technique to determine the particle size of the material. The students will also investigate the structural transition of the TiO2 as a function of the temperature in the 500-800°C range.

Keywords : TiO₂ nanoparticles; sol-gel method; polymorphism.