1. Department of Chemistry, University of California Riverside, Riverside, California 92521, United States
2. School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning 116024, China
3. Computational Sciences and Engineering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
4. Department of Materials Science and Engineering and A. J. Drexel Nanomaterials Institute, Drexel University, Philadelphia, Pennsylvania 19104, United States