1. Laboratory of Clean Energy Chemistry and MaterialsState Key Laboratory of Solid LubricationLanzhou Institute of Chemical PhysicsChinese of Academy of Sciences Lanzhou 730000 P. R. China
2. Key Laboratory of Special Function Materials & Structure Design of the Ministry of Education, and School of Physical Science & TechnologyLanzhou University 222 South Tianshui Road Lanzhou 730000 P. R. China
3. Key Laboratory of Metallurgical Emission Reduction & Resources RecyclingAnhui University of Technology Maanshan 243000 P. R. China