1. Department of Chemistry and Chemical Engineering, Zunyi Normal University, Zunyi, Guizhou, P. R. China
2. Chinese Academy of Sciences, Chongqing Institute of Green and Intelligent Technology (CIGIT), Chongqing, P. R. China
3. MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing, P. R. China