1. Department of Physical-Chemistry, Universidade Estadual de Campinas (UNICAMP), R. Josué de Castro, s/n, Cidade Universitária, Campinas 13083-872, Brazil
2. Center for Innovation on New Energies (CINE), R. Michel Debrun, s/n, Prédio Amarelo, Campinas 13083-084, Brazil
3. Brazilian Synchrotron Light Laboratory (LNLS), Brazilian Center for Research in Energy and Materials (CNPEM), R. Giuseppe Máximo Scolfaro, 10000 - Bosque das Palmeiras, Campinas 13083-970, Brazil