Introduction of Molecular Building Blocks to Improve the Stability of Metal-Organic Frameworks for Efficient Mercury Removal
Introduction of Molecular Building Blocks to Improve the Stability of Metal-Organic Frameworks for Efficient Mercury Removal
复制标题
引入分子结构单元提高金属有机框架的稳定性，实现高效除汞
DOI：
10.1021/acs.inorgchem.8b00704
复制
发表时间：
2018-05-21
影响因子：
4.6
通讯作者：
Lan, Ya-Qian
中科院分区：
文献类型：
--
作者：
Jiang, Shu-Yi;He, Wen-Wen;Lan, Ya-Qian
随着人类需求的不断扩大，许多重金属被开采、冶炼、加工和生产用于商业化，造成了严重的环境污染。目前，许多吸附材料被应用于重金属吸附领域。其中，许多汞吸附剂的原理都是基于汞与硫的相互作用。合成了一种含S的金属有机骨架化合物NENU-400，用于汞的有效萃取。不幸的是，当暴露在汞液体溶液中时，Nenu-400的骨架很容易坍塌。为了提高稳定性，采用了一种在通道中安装分子构建块(MBBS)的合成策略。经MBBS修饰后，合成了更加稳定的纳米孔道骨架，不仅具有较高的饱和吸汞能力，而且具有较高的选择性和高效的回收性能。
With expanding human needs, many heavy metals were mined, smelted, processed, and manufactured for commercialization, which caused serious environmental pollutions. Currently, many adsorption materials are applied in the field of adsorption of heavy metals. Among them, the principle of many mercury adsorbents is based on the interaction between mercury and sulfur. Here, a S-containing metal organic framework NENU-400 was synthesized for effective mercury extraction. Unfortunately, the skeleton of NENU-400 collapsed easily when exposed to the mercury liquid solution. To improve the stability, a synthetic strategy installing molecular building blocks (MBBs) into the channels was used. Modified by the MBBs, a more stable nanoporous framework was synthesized, which not only exhibits a high capacity of saturation mercury uptake but also shows high selectivity and efficient recyclability.