1. State Key Laboratory of Fine ChemicalsPSU-DUT Joint Center for Energy ResearchSchool of Chemical EngineeringDalian University of Technology Dalian 116024 P.R. China
2. EMS Energy InstitutePSU-DUT Joint Center for Energy Research and Departments of Energy & Mineral Engineering and Chemical EngineeringPennsylvania State University University Park Pennsylvania 16802 USA
3. School of Chemical Engineering and TechnologyNorth University of China Taiyuan Shanxi 030051 P.R. China
4. Shenyang Research Center of Material ScienceInstitute of Metal ResearchChinese Academy of Sciences Shenyang 110016 P.R. China