CHENG Li-Hong1**, FENG Gang2**, SHI Liu2, QING Shao-Jun3, GAO Zhi-Xian4**
1. Department of Material Science and Engineering, Jiangxi Science and Technology Normal University, Nanchang 330038, China;
2. College of Chemistry, Nanchang University, Nanchang 330031, China;
3. Shanxi Institute of Coal Chemistry,Chinese Academy of Sciences, Taiyuan 030001, China;
4. Liaoning Shihua University, Fushun 113001, China