1. School of Materials Science and EngineeringQingdao University of Science and Technology Qingdao 266042 China
2. Weifang University of Science and TechnologyShandong Peninsula Engineering Research Center of Comprehensive Brine Utilization Weifang 262700 P. R. China
3. Department of Chemical and Biomolecular EngineeringNational University of Singapore 4 Engineering Drive 4 Singapore 117585 Singapore
4. College of ScienceChina University of Petroleum (East China) Qingdao 266580 P. R. China