DENG Wen-Fang1, CHEN Chao1, QIN Cong2, YANG Sheng1, FANG Zheng-Fa1**, MA Ming1, TAN Liang1**
1. College of Chemistry and Chemical Engineering,Hunan Normal University,Changsha 410081,China; 2. SiQi School Attached to Hunan Normal University,Changsha 410083,China