1. School of Chemistry; Federal University of Rio de Janeiro (UFRJ); Rio de Janeiro RJ Brazil
2. Centro Universitário Estadual da Zona Oeste (UEZO); Campo Grande RJ Brazil
3. Postgraduate Program, School of Chemistry; Federal University of Rio de Janeiro (UFRJ); Rio de Janeiro RJ Brazil
4. Canmet Energy Technology Centre; Natural Resources Canada; Devon Alberta Canada
5. Department of Chemical and Materials Engineering; University of Alberta; Edmonton Alberta Canada
6. National Institute for Nanotechnology; National Research Council of Canada; Edmonton Alberta Canada