1. LSQM − Laboratory of Chemical Synthesis of Materials − Department of Materials Engineering, Federal University of Rio Grande do Norte − UFRN, P.O. Box 1524, 59078-970 Natal, RN, Brazil
2. CDMF-UFSCar, Universidade Federal de São Carlos, P.O. Box 676, 13565-905 São Carlos, SP, Brazil
3. Department of Chemistry, Minas Gerais State University, Av. Paraná, 3001, 35501-170 Divinópolis, MG, Brazil
4. Department of Chemistry, State University of Ponta Grossa, Av. General Carlos Cavalcanti, 4748, 84030-900 Ponta Grossa, PR, Brazil