MIL-53 and its OH-bonded variants for bio-polyol adsorption from aqueous solution,RSC Advances

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MIL-53 and its OH-bonded variants for bio-polyol adsorption from aqueous solution
RSC Advances ( IF 3.9 ) Pub Date : 2022-08-04 , DOI: 10.1039/d2ra03203a
Na Cao _{1,

2} , Jiayi Liu _{1,

3} , Yuecheng Wang _{1,

2} , Yingwu Zhou _{1,

2} , Meng Zhao _{1,

2} , Yujie Ban _{1,

2} , Weishen Yang _{1,

2}

Affiliation

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.

中文翻译：

MIL-53 及其 OH 键变体，用于从水溶液中吸附生物多元醇

从稀水溶液中吸附生物多元醇很重要，但在可持续的生物精炼过程中面临挑战。提高吸附效率的一种解决方案是利用多元醇和材料之间的主客体相互作用来赋予对多元醇的偏好。在本研究中，我们合成了 MIL-53 和多种 OH 键变体，并研究了它们对水中的乙二醇、1,3-丙二醇和甘油的吸附特性。在这四种材料中，OH-MIL-53 表现出快速的吸附动力学和高容量，并且可以通过乙醇洗脱完全再生。确定了多元醇的烷基链与 OH-MIL-53 的有机接头之间的疏水相互作用以及它们的 OH 基团之间的氢键相互作用。

更新日期：2022-08-04

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