ZHONG Jun-Xing, CHEN Min-Chang, LIN Jing-Hong, HU Xiao-Tao, LIN Ling, HUANG Wei-Qiang, QIU Yue, LIU Heng, CHEN Jin-Hong, WANG Yan-Hui, LIU Ru-Liang, XU Wei-Qin**
College of Chemistry and Materials Science,Guangdong University of Education,Guangzhou 510303,China