1. Laboratory of Nanomaterials for Renewable Energy and Artificial Photosynthesis (NanoREAP), Federal University of Rio Grande do Sul (UFRGS), Campus do Vale, Agronomia, Porto Alegre-RS, Brazil
2. Laboratory of Molecular Catalysis (LAMOCA), Federal University of Rio Grande do Sul (UFRGS), Campus do Vale, Agronomia, Porto Alegre-RS, Brazil
3. São Carlos Institute of Physics, University of São Paulo, PO Box 369, 13560-970 São Carlos, SP, Brazil