1. Ceramic Materials Laboratory, Federal Institute of Education, Science, and Technology of Piauí—IFPI, Av. Pedro Freitas, 1020-São Pedro, Teresina 64019-368, PI, Brazil
2. Technology Center—UFPI, Materials Science and Engineering, Federal University of Piauí—UFPI, Teresina 64064-260, PI, Brazil
3. Chemistry Department, Federal University of Piaui—UFPI, Teresina 64049-550, PI, Brazil