1. State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
2. Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
3. Department of Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China
4. School of Electric Power, Civil Engineering and Architecture, Shanxi University, Taiyuan 030024, China
5. State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan 750021, China