1. School of Chemistry and Chemical Engineering Beijing Institute of Technology 5 South Zhongguancun Street Haidian District, Beijing 100081 P.R. China
2. Beijing National Laboratory for Molecular Sciences College of Chemistry Peking University No.5 Yiheyuan Road Haidian District, Beijing 100871 P.R. China
3. School of Resources and Chemical Engineering Sanming University Jingdong Road 25 Sanming 365004 P.R. China
4. Department of Mechanical Engineering Virginia Polytechnic Institute and State University 635 Prices Fork Rd Blacksburg VA 24061 USA