1. Department of Chemical and Materials Engineering, The University of Auckland, PB 92019, Auckland, 1142, New Zealand
2. Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing, 100083, P. R. China
3. Department of Materials Science and Engineering, National University of Defense Technology, Changsha 410073, P. R. China