1. School of Chemistry and Chemical EngineeringAnalytical Testing CenterInstitute of Micro & Nano Intelligent SensingNeijiang Normal University Neijiang 641100 P. R. China
2. Chemical Synthesis and Pollution Control Key Laboratory of Sichuan ProvinceChina West Normal University Nanchong 637000 P. R. China
3. Department of ChemistryKey Laboratory of Advanced Energy Material ChemistryMOE, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)Nankai University Tianjin 300350 P. R. China