1. National Engineering Research Center for Technology and Equipment of Green Coating Lanzhou Jiaotong University 730070 Lanzhou People's Republic of China
2. Laboratory of Clean Energy Chemistry and Materials State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical Physics Chinese Academy of Sciences 730000 Lanzhou P. R. China
3. Shandong Laborary of Yantai Advanced Materials and Green Manufacturing 264000 Yantai P. R. China