1. Department of Chemical Sciences, University of Padua, Via Marzolo 1, 35131 Padova, Italy
2. Laboratori d’Electroquı́mica dels Materials i del Medi Ambient, Departament de Quı́mica Fı́sica, Facultat de Quı́mica, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain
3. Department of Municipal and Environmental Engineering, Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, Beijing Jiaotong University, 100044 Beijing, China
4. Departament d’Enginyeria Quı́mica, EEBE, Universitat Politècnica de Catalunya, C/ Eduard Maristany, 10-14, Ed. I2, 08019 Barcelona, Spain