1. Joint International Research Laboratory of Advanced Chemical Catalytic Materials & Surface Science College of Chemistry and Chemical Engineering Northeast Petroleum University Daqing 163318 P. R. China
2. State Key Laboratory for Mechanical Behavior of Materials School of Materials Science and Engineering Xi'an Jiaotong University Xi'an 710049 P. R. China
3. Department of Chemistry Queen's University Kingston ON K7L 3N6 Canada
4. Huangpu Hydrogen Energy Innovation Centre School of Chemistry and Chemical Engineering Guangzhou University Guangzhou 510006 P. R. China
5. CAS Key Laboratory of Standardization and Measurement for Nanotechnology National Center for Nanoscience and Technology Beijing 100190 P. R. China
6. National Synchrotron Radiation Laboratory University of Science and Technology of China Hefei 230029 P. R. China