1. School of Chemistry and Chemical Engineering, North Minzu University, Yinchuan 750021, P. R. China
2. Ningxia Key Laboratory of Solar Chemical Conversion Technology, North Minzu University, Yinchuan 750021, P. R. China
3. Key Laboratory for Chemical Engineering and Technology, State Ethnic Affairs Commission, North Minzu University, Yinchuan 750021, P. R. China
4. School of Civil Engineering, North Minzu University, Yinchuan 750021, P. R. China
5. School of Biological Sciences and Engineering, North Minzu University, Yinchuan, 750021, P. R. China
6. Key Lab For Special Functional Materials of Ministry of Education, National & Local Joint Engineering Research Center for High-efficiency Display and Lighting Technology, School of Nanoscience and Materials Engineering, Collaborative Innovation Center of Nano Functional Materials and Applications, Henan University, Kaifeng 475004, P. R. China