1. CAS Key Laboratory of Biofuels, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, PR China
2. Laboratory of Natural Materials Technology, Åbo Akademi University, Henrikinkatu 2, Turku FI-20500, Finland
3. Shandong Energy Institute, Qingdao 266101, PR China
4. Qingdao New Energy Shandong Laboratory, Qingdao 266101, PR China