1. Faculty of Mathematics and Physics, Huaiyin Institute of Technology, Huaian 223003, China
2. National & Local Joint Engineering Research Center for Mineral Salt Deep Utilization, Huaiyin Institute of Technology, Huaian 223003, China
3. Key Laboratory for Palygorskite Science and Applied Technology of Jiangsu Province, Huaiyin Institute of Technology, Huaian 223003, China
4. School of Materials Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, China
5. Jiangsu Provincial Key Laboratory of Eco-Environmental Materials, Yancheng Institute of Technology, Yancheng 224051, China