Department of Chemistry , University of Science and Technology of China , Hefei , Anhui 230026 , People's Republic of China.
State Key Laboratory of Structural Chemistry , Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , Fuzhou 350002 , People's Republic of China.
Inorg Chem. 2018 May 7;57(9):4891-4897. doi: 10.1021/acs.inorgchem.7b03076. Epub 2018 Apr 25.
Considering rapidly rising Hg emission from industrial waste effluents, it is imperative to explore practical and effective adsorbents for Hg. Herein, a mild and facile method has been developed to confine ultrasmall InS nanoparticles (about 2.5 nm) in the cavities of a MOF for the first time. The resulting composite (InS@MIL-101) can remove 99.95% of the Hg from wastewater very efficiently in as short as 1 min with the highest distribution coefficient (2.2 × 10 mL g) among all MOF-based mercury adsorbents. It also displays excellent selectivity for Hg even when other interferential metal ions are present, and it can be reused with almost retained adsorption capacity. All of these features make the composite a potential adsorbent for Hg removal from industrial wastewater.
考虑到工业废水中汞排放量的迅速增加，探索实用有效的汞吸附剂势在必行。本文首次开发了一种温和简便的方法，将超小的 InS 纳米粒子（约 2.5nm）限制在 MOF 的腔体内。所得复合材料（InS@MIL-101）可在 1 分钟内非常有效地从废水中去除 99.95%的汞，其分配系数（2.2×10 mL g）在所有基于 MOF 的汞吸附剂中最高。即使存在其他干扰金属离子，它也表现出对汞的优异选择性，并且可以重复使用，几乎保留了吸附能力。所有这些特性使该复合材料成为一种有潜力的工业废水中去除汞的吸附剂。
