1. State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan 750021, China
2. School of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, 750021, China
3. Microcellular Plastics Manufacturing Laboratory, Department of Mechanical and Industrial Engineering, University of Toronto, Toronto M5S 3G8, Canada
4. Key Laboratory of Photovoltaic Materials, School of Materials and New Energy, Ningxia University, Yinchuan, 750021, China