Preparation of Surface Imprinted Polymer D301‐g‐IIPDMC and its Recognition Selectivity Performance towards AuCl4

In this article, a new surface imprinted polymer D301‐g‐IIPDMC is successfully prepared using AuCl4− as a template. The adsorption and recognition performances of D301‐g‐IIPDMC for AuCl4− are studied by using a static method and competitive adsorption experiment. The experimental results show that D301‐g‐IIPDMC possesses very strong adsorption affinity and excellent recognition for AuCl4−. The adsorption capacity of D301‐g‐IIPDMC for AuCl4− is 831.08 mg/g, and the selectivity coefficient relative to CuCl42− is 128. The adsorption behavior is an endothermic spontaneous process, and fit well with pseudo‐second order kinetic model and Freundlich adsorption isotherm model. Besides, D301‐g‐IIPDMC is desorbed easily and exhibits excellent reusability. The influence of adsorbent dosage on the adsorption performance. The adsorption efficiency of D301‐g‐IIPDMC for AuCl4− increases along with increasing the adsorbent dosage, and the adsorption efficiency could reach 97.25% at the adsorbent dosage of 0.05 g. This indicates that D301‐g‐IIPDMC can be used as adsorbents to recover AuCl4− effectively.