1. Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, P. R. China
2. Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, P. R. China
3. School of Materials and Chemical Engineering, Hubei University of Technology, Wuhan 430068, P. R. China