1. University of Michigan–Shanghai Jiao Tong University Joint Institute, Shanghai Jiao Tong University, Shanghai, P.R. China
2. State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan, P. R. China, and Nano Interface Center for Energy, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan, P. R. China
3. School of Power and Mechanical Engineering, Wuhan University, Wuhan, P. R. China