1. School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi’an 710129, P. R. China
2. Xi’an Key Laboratory of Functional Organic Porous Materials, Northwestern Polytechnical University, Xi’an 710072, P. R. China
3. Shaanxi Key Laboratory of Chemical Reaction Engineering, College of Chemistry and Chemical Engineering, Yan’an University, Yan’an 716000, P. R. China
4. Shaanxi Engineering and Research Center for Functional Polymers on Adsorption and Separation, Sunresins New Materials Co. Ltd., Xi’an 710072, P. R. China