1. State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences (CAS) Fuzhou Fujian 350002 P.R. China
2. School of Engineering and Materials Science Queen Mary University of London London E1 4NS UK
3. Department of Chemical Engineering University College London London WC1E 7JE UK
4. Department of Chemistry University College London 20 Gordon Street London WC1H 0AJ UK
5. Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources Qinghai Institute of Salt Lakes Chinese Academy of Sciences (CAS) Xining 810008 P.R. China