1. School of Chemistry & State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, P. R. China
2. College of Basic Sciences, Tianjin Agricultural University, Tianjin 300384, P.R. China
3. Tianjin Nantian New Materials Research Center Co., Ltd., Tianjin 300084, P. R. China