1. Department of Chemistry; University of Warwick; Coventry CV4 7AL UK
2. Analytical Chemistry-Center for Electrochemical Sciences (CES); Ruhr-Universität Bochum; Universitätsstrasse 150 44780 Bochum Germany
3. University Politehnica of Bucharest; Department of Bioresources and Polymer Science; 1-7 Gh. Polizu Street Bucharest Romania
4. Inorganic Chemistry I; Ruhr-Universität Bochum; Universitätsstrasse 150 44780 Bochum Germany
5. Department of Geology, Mineralogy and Geophysics; Ruhr-Universität Bochum; Universitätsstrasse 150 44780 Bochum Germany
6. Fraunhofer UMSICHT; Osterfelder Strasse 3 46047 Oberhausen Germany