1. Institute of Natural and Synthetic Polymers, Technology and Materials, Faculty of Chemical and Food Technology, Slovak University of Technologyn Bratislava, Radlinského 9, 812 37 Bratislava, Slovakia
2. Institute of Inorganic Chemistry, Technology and Materials, Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Radlinského 9, 812 37 Bratislava, Slovakia