1. School of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266000, China
2. School of Materials Science and Engineering, Harbin Institute of Technology at Weihai, 2 West Wenhua Road, Weihai 264209, China
3. School of Civil and Environmental Engineering, Georgia Institute and Technology, 828 W. Peachtree Street, Suite 320, Atlanta, Georgia 30332-0595, United States