1. School of Environment, Nanjing Normal University, Nanjing 210023, P. R. China
2. Department of Mining Engineering, Kim Chaek University of Technology, Pyongyang 999093, Democratic People’s Republic of Korea
3. Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China
4. National Energy Center for Coal to Liquids, Synfuels CHINA Co., Ltd., Huairou District, Beijing 101400, P. R. China
5. Jiangsu Province Engineering Research Center of Environmental Risk Prevention and Emergency Response Technology, Nanjing 210023, P. R. China
6. School of Environment, Nanjing University, Nanjing 210023, P. R. China