1. State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, China
2. School of Chemistry and Materials Science, Hunan Agricultural University, Changsha 410128, P. R. China
3. State Key Laboratory of Utilization of Woody Oil Resource of China, Key Laboratory of National Forestry and Grassland Administration on Utilization Science for Southern Woody Oil Resources, Hunan Academy of Forestry, Changsha, Hunan 410018, China
4. Hunan Province YinFeng New Energy Co. Ltd., Changsha, Hunan 410000, China
5. School of Energy and Environment, Southeast University, Nanjing 211189, P. R. China