1. 1Institute of Geology, Karelian Research Centre, RAS, Petrozavodsk 185910, Russia
2. 2Department of Chemistry, Moscow State University, Moscow 119991, Russia
3. 3Institute of Chemistry and Technology of Petroleum and Coal, Wrocław University of Technology, 50-344 Wrocław, Poland
4. 4NanoCarbon Research Institute, Asama Research Extension Centre, Shinshu University, 3-15-1 Tokita, Ueda, Nagano 386-8567, Japan