1. College of Mechanical and Vehicle Engineering, Hunan University, Changsha, Hunan, China
2. Institute of New Energy and Energy-Saving & Emission-Reduction Technology, Hunan University, Changsha, Hunan, China
3. Centre for Green Technology, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW, Australia
4. Future Technology Research Center, National Yunlin University of Science and Technology, Yunlin, Taiwan ROC