1. Department of Advanced Materials Science Faculty of Engineering and Design Kagawa University 2217-20 Hayashi-cho Takamatsu 761-0396 Japan
2. Institute of Environment-friendly Materials and Occupational Health (Wuhu) and School of Earth and Environment Anhui University of Science and Technology Huainan Anhui 241000 P. R. China
3. School of Materials Science and Engineering Shaanxi University of Science and Technology Weiyang Xi'an Shaanxi 710021 P. R. China