1. ICPEES (CNRS UMR 7515/Université de Strasbourg), 25 rue Becquerel, 67087 Strasbourg, Cedex 02, France
2. Laboratory of Materials, Catalysis, Environment and Analytical Methods Laboratory (MCEMA), Faculty of Sciences, Lebanese University, Rafic Hariri Campus, Hadath, Lebanon
3. Faculty of Science and Engineering, Maastricht University, 6200 MD, Maastrich, P.O. Box 616, The Netherlands