1. City College, Kunming University of Science and Technology, Kunming 650051, China
2. Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China
3. Yunnan Precious Metal New Material Holding Group Co., Ltd., Kuming 650106, China
4. State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metal, Kunming 650106, China
5. Kunming Institute of Precious Metals, Kunming 650106, China