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用于从水溶液中吸附生物多元醇的MIL-53及其羟基键合变体。

MIL-53 and its OH-bonded variants for bio-polyol adsorption from aqueous solution.

作者信息

Cao Na, Liu Jiayi, Wang Yuecheng, Zhou Yingwu, Zhao Meng, Ban Yujie, Yang Weishen

机构信息

State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences Dalian 116023 China

University of Chinese Academy of Sciences Beijing 100049 China.

出版信息

RSC Adv. 2022 Aug 4;12(34):21681-21689. doi: 10.1039/d2ra03203a.

DOI:10.1039/d2ra03203a
PMID:35975036
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9350665/
Abstract

The adsorption of bio-polyols from dilute aqueous solution is important but faces challenges in the sustainable bio-refinery process. One solution to increase adsorption efficiency is to leverage host-guest interactions between the polyols and materials to grant a preference for polyols. In this study, we synthesized MIL-53 and diverse OH-bonded variants, and studied their adsorption properties towards ethanediol, 1,3-propanediol and glycerol in water. Among the four materials, OH-MIL-53 exhibited fast adsorption kinetics and high capacity, and could be completely regenerated through ethanol elution. Hydrophobic interactions between the alkyl chains of the polyols and the organic linkers of OH-MIL-53 and hydrogen bonding interactions between their OH groups were identified. The synergistic effect of the host-guest interactions is responsible for the unique adsorption performances of OH-MIL-53 towards polyols, and particularly for 1,3-propanediol.

摘要

从稀水溶液中吸附生物多元醇很重要，但在可持续生物炼制过程中面临挑战。提高吸附效率的一种方法是利用多元醇与材料之间的主客体相互作用，使材料对多元醇具有选择性。在本研究中，我们合成了MIL-53及其多种羟基键合变体，并研究了它们对水中乙二醇、1,3-丙二醇和甘油的吸附性能。在这四种材料中，OH-MIL-53表现出快速的吸附动力学和高吸附容量，并且可以通过乙醇洗脱完全再生。我们确定了多元醇的烷基链与OH-MIL-53的有机连接体之间的疏水相互作用以及它们的羟基之间的氢键相互作用。主客体相互作用的协同效应是OH-MIL-53对多元醇，特别是对1,3-丙二醇具有独特吸附性能的原因。

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Host-Guest Interactions in a Metal-Organic Framework Isoreticular Series for Molecular Photocatalytic CO Reduction.
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