1. School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
2. Beijing Key Laboratory of Energy Saving and Emission Reduction for Metallurgical Industry, School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
3. Department of Mechanical Engineering, The University of Hong Kong, Hong Kong 999077, China
4. Department of Chemistry, The University of Hong Kong, Hong Kong 999077, China