使用烯胺酮共价有机聚合物（COP）对金进行高度选择性富集。
Highly selective enrichment of Au using enaminone covalent organic polymers (COP).
作者信息
Li An, Zheng Naixia, Yang Tao, Xie Jun, Li LiJun, Tang KeWen, Zhou CongShan
机构信息
Province Key Laboratory for Fine Petrochemical Catalysis and Separation, College of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology Yueyang Hunan 414000 P. R. China
出版信息
RSC Adv. 2021 Sep 6;11(47):29807-29815. doi: 10.1039/d1ra03868k. eCollection 2021 Sep 1.
The second recovery of gold has fundamental environmental and economic significance. In this study, an enaminone covalent organic polymer (COP) was synthesized and used to recover gold from secondary resources. The ketene covalent organic polymer (COP) possessed good gold adsorption performance, and the best adsorption capacity could reach up to 1945 mg g at 298 K, which was superior to traditional adsorbents. Meanwhile, the synthesized COP exhibited excellent adsorption selectivity and renewability of Au. The pseudo-second-order kinetic equation and Langmuir equation were suggested for describing the adsorption process. Moreover, this gold adsorption behavior was intended to be a spontaneous, endothermic, and entropy increasing process.
金的二次回收具有重要的环境和经济意义。在本研究中，合成了一种烯胺酮共价有机聚合物（COP）并用于从二次资源中回收金。乙烯酮共价有机聚合物（COP）具有良好的金吸附性能，在298K时最佳吸附容量可达1945mg/g，优于传统吸附剂。同时，合成的COP对金表现出优异的吸附选择性和可再生性。建议用伪二级动力学方程和朗缪尔方程描述吸附过程。此外，这种金吸附行为是一个自发、吸热且熵增加的过程。
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