1. Al-Farabi Kazakh National University 71 al-Farabi ave. Almaty 050040 Kazakhstan
2. Johan Gadolin Process Chemistry Centre Åbo Akademi University Turku/Åbo 20500 Finland
3. Laboratory of Electron Microscopy University of Turku Turku 20014 Finland
4. Wihuri Physical Laboratory Department of Physics and Astronomy University of Turku 20500 Turku Finland
5. D.V. Sokolsky Institute of Fuel Catalysis and Electrochemistry 142 Kunaev str. Almaty 050010 Kazakhstan