Síntese e estudo de ortossilicatos de zinco luminescentes com aplicação da técnica sol-gel Synthesis and study of zinc orthosilicates luminophores by the sol-gel technique

Abstract

Usually, the concepts of the Sol-Gel technique are not applied in experimental chemistry courses. This work presents a feasible experiment for chemistry instruction, which involves the synthesis of luminescent materials - Zn2SiO4, with and without Mn2+ as a dopant - by the Sol-Gel technique. The obtained materials were analyzed by scanning electron microscopy, X-Ray diffraction, IR spectroscopy and luminescence measures by UV-vis spectroscopy. The results allow the students to confirm the luminescent properties of the zinc orthosilicate luminophores as well as the structural features expected from literature data.

Keywords

• zinc orthosilicates
• luminophores
• sol-gel