1. School of Materials Science and Engineering, State Key Laboratory of Material Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
2. Enginering Research Centre for Functional Ceramics, Ministry of Education, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
3. School of Physics, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
4. School of Mechanical and Electrical Engineering, Shihezi University, Shihezi, 832003, P. R. China
5. Department of Chemistry, Faculty of Science and Technology, Thammasat University, Pathumthani 12120, Thailand
6. Department of Chemistry, Simon Fraser University, Burnaby, BC V5A 1S6, Canada