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 ${AuCl_4}^-$ as a template. The adsorption and recognition performances of D301-g-IIPDMC for ${AuCl_4}^-$ 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 ${AuCl_4}^-$. The adsorption capacity of D301-g-IIPDMC for ${AuCl_4}^-$ is 831.08 mg/g, and the selectivity coefficient relative to ${CuCl_4}^{2-}$ 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.