1. Preparation of HxPO4(3-x)- Imprinted Polypyrrole Membrane Material and Its Electrochemically Switched Ion Exchange Properties
- Author
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Lifang XING, Qinbo YUAN, Liang CHEN, Xianxian ZHOU, Yu LI, Enzhi WANG, Panpan LIU, and Shibin LIU
- Subjects
water purification ,phosphorus pollution ,ppy membrane ,electrochemically switched ion exchange ,hxpo4(3-x)- ,Chemical engineering ,TP155-156 ,Materials of engineering and construction. Mechanics of materials ,TA401-492 ,Technology - Abstract
The polypyrrole-based imprinted membrane material was prepared on gold plated quartz wafer by potentiostatic method. The morphology, structure, and composition of membrane material were characterized by SEM, FT-IR, and XPS. The results show that the surface micromorphology of material was cauliflower-like, and the membrane contained H2PO4-, which had the characteristics of H2PO4- imprinting. The exchange properties of HxPO4(3-x)- were investigated by electrochemical method. The results show that with the increase of pH, the ion exchange capacity first decreased and then increased, showing a āVā shape. As the concentration of NaH2PO4 increased, the ion exchange capacity monotonously increased, up to 150 mg/g.
- Published
- 2021
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