1. Institute of Physical and Engineering Science/Faculty of Science, Kunming University of Science and Technology, Kunming 650500, China
2. Education Ministry Key Laboratory of Renewable Energy Advanced Materials and Manufacturing Technology, Yunnan Normal University, Kunming 650500, China
3. Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093 P. R. China
4. State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, China