1. State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou, PR China
2. School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou, PR China
3. School of Chemistry and Chemical Engineering, Guangxi University, Nanning, PR China
4. School of Materials Science and Engineering, National Institute for Advanced Materials, Nankai University, Tianjin, PR China