1. Tianjin Key Lab for Rare Earth Materials and Applications Center for Rare Earth and Inorganic Functional Materials School of Materials Science and Engineering & National Institute for Advanced Materials Nankai University Tianjin 300350 P. R. China
2. School of Chemistry and Chemical Engineering Inner Mongolia Key Lab of Nanoscience and Nanotechnology Inner Mongolia Engineering and Technology Research Center for Catalytic Conversion and Utilization of Carbon Resource Molecules Inner Mongolia University Hohhot 010021 P. R. China
3. Inner Mongolia Key Laboratory of Carbon Nanomaterials Nano Innovation Institute (NII) College of Chemistry and Materials Science Inner Mongolia University for Nationalities Tongliao 028000 P. R. China