Science Division , New York University Abu Dhabi (NYUAD) , P.O. Box 129188, Saadiyat Island, Abu Dhabi , UAE.
Chemical Engineering Department , Khalifa University , P.O. Box 127788, Abu Dhabi , UAE.
ACS Appl Mater Interfaces. 2019 Apr 3;11(13):12898-12903. doi: 10.1021/acsami.9b02259. Epub 2019 Mar 25.
A rational design of adsorbents with high uptake efficiency and fast kinetics for highly toxic pollutants is a key challenge in environmental remediation. Here, we report the design of a well-defined thioether-crown-rich porous calix[4]arene-based mesoporous polymer S-CX4P and its utility in removal of highly relevant toxic mercury (Hg) from water. The polymer shows an exceptional, record-high uptake efficiency of 1686 mg g and the fastest initial adsorption rate of 278 mg g min. Remarkably, S-CX4P can effectively remove Hg from high concentration (5 ppm) to below the acceptable limit for drinking water (2 ppb) even in the presence of other competitive metals at high concentrations. In addition, the polymer can be easily regenerated at room temperature and reused multiple times with negligible loss in uptake rate and efficiency. The results demonstrate the potential of rationally designed thioether-crown-rich polymers for high performance mercury removal.
设计对高毒性污染物具有高吸收效率和快速动力学的吸附剂是环境修复中的一个关键挑战。在这里，我们报告了一种定义明确的硫醚-冠富多孔杯[4]芳烃基介孔聚合物 S-CX4P 的设计及其在去除高相关毒性汞（Hg）方面的应用。该聚合物表现出极高的吸收效率（1686 mg g）和最快的初始吸附速率（278 mg g min）。值得注意的是，即使在高浓度（5 ppm）存在其他竞争金属的情况下，S-CX4P 也能有效地将 Hg 去除到饮用水可接受限值（2 ppb）以下。此外，该聚合物可在室温下轻松再生，并可重复使用多次，而吸收速率和效率几乎没有损失。这些结果表明，合理设计的硫醚-冠富聚合物在高性能汞去除方面具有潜力。
