1. Institute of Nanoscience and Nanotechnology, NCSR “Demokritos”, 15310 Athens, Greece
2. Department of Chemical Engineering, Khalifa University of Science and Technology, Petroleum Institute, P.O. Box 2533, Abu Dhabi, United Arab Emirates
3. Department of Materials Science and Engineering, University of Ioannina, 45110 Ioannina, Greece
4. TITAN Cement Company S.A., 11143 Athens, Greece