1. College of Materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials China Three Gorges University No. 8 Daxue Road Yichang 443002 Hubei P. R. China
2. School of Science Tianjin Chengjian University No. 26 Jinjing Road Tianjin 300038 P. R. China
3. School of Chemical Engineering and Technology Tianjin University No. 92 Weijin Road Tianjin 300072 P. R. China
4. Hubei Three Gorges Laboratory No. 1 Mazongling Road Yichang 443007 Hubei P. R. China