1. State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province, Advanced Catalysis Center, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
2. Canadian Light Source, Saskatoon, Saskatchewan S7N 2V3, Canada
3. Key Laboratory for Magnetism and Magnetic Materials of MOE, Key Laboratory of Special Function Materials and Structure Design of MOE, Lanzhou University, Lanzhou 730000, P. R. China
4. Vacuum Interconnected Nanotech Workstation, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences (CAS), Suzhou 215123, P. R. China
5. Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, P. R. China