1. Jiangsu Key Laboratory of Precious Metals Chemistry and Engineering, School of Chemistry and Environment Engineering, Jiangsu University of Technology, Changzhou, Jiangsu 213001, P. R. China
2. Key Laboratory for Palygorskite Science and Applied Technology of Jiangsu, School of Chemical Engineering, Huaiyin Institute of Technology, Huaian 223300, P. R. China
3. Hubei Key Laboratory of Polymer Materials, School of Materials Science and Engineering, Hubei University, Wuhan 430062, P. R. China
4. Jiangsu Guorun Testing Service Co., Ltd., Changzhou 213001, P. R. China
5. Jiangsu Changli Testing Service Co., Ltd., Changzhou 213001, P. R. China