[1] Instituto de Química, Universidade Federal do Rio Grande do Norte, Laboratório de Eletroquímica Ambiental e Aplicada, Natal,RN,59078-970, Brazil
[2] Institut für Organische Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, Mainz,P55128, Germany
[3] Chemical Engineering Department, University of Castilla-La Mancha, Edificio Enrinque Costa Novella, Campus Universitario s/n, Ciudad Real,13005, Spain