1. Shanxi Province Key Laboratory of Functional Nanocomposites; North University of China, Taiyuan; Shanxi 030051 P. R. China E-mail: Yaqing Liu E-mail: Yaqiong Gong
2. Chemical Engineering and TechnologyInstitute; North University of China, Taiyuan; Shanxi 030051 P. R. China
3. State Key Laboratory of Structural Chemistry; Fujian Institute of Research on the Structure of Matter; Chinese Academy of Sciences, Fuzhou; Fujian 350002 P. R. China