用于去除水相中罗丹明 B 染料的可膨胀杂化硅

IF 4.8 3区材料科学 Q1 CHEMISTRY, APPLIED Microporous and Mesoporous Materials Pub Date : 2024-05-15 DOI:10.1016/j.micromeso.2024.113178

Lorenzo Maccarino , Vanessa Miglio , Geo Paul , Giovanni Golemme , Chiara Bisio , Leonardo Marchese

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引用次数: 0

摘要

本研究的重点是使用有机-无机混合二氧化硅（Silica-SOM）去除水介质中的罗丹明 B 染料（RhB）。由于其混合结构，Silica-SOM 具有在有机溶剂存在下可膨胀的独特性质，从而增加了可用于吸附污染物的体积。Silica-SOM 从水介质中吸附 RhB 的吸附能力已经确定。特别是，如果事先用有机溶剂使该材料膨胀，那么在环境条件下，不到 1 小时就能吸附 1.0 × 10-5 M RhB 溶液中 99% 以上的染料分子。此外，还首次测试了硅胶-SOM 在一次 RhB 吸附循环后在乙醇中通过轻微超声重新生成的能力：这种材料很容易再生，并可用于连续六次吸附循环；在每一次循环中，吸附性能都没有损失，而且吸附量仍然很大，吸附速度极快。

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Swellable hybrid silicas for the removal of rhodamine B dye from aqueous phase

This study is focused on the use of a hybrid organic-inorganic silica (Silica-SOM) for the removal of Rhodamine B dye (RhB) from water media. Because of its hybrid structure, Silica-SOM has the unique property of being swellable in the presence of an organic solvent, thus increasing the volume available for pollutants adsorption. The adsorption capacity of the Silica-SOM to adsorb RhB from water media has been determined. In particular, if the material is previously swollen with an organic solvent, it is able to sequester more than 99 % of dye molecules in a 1.0 × 10⁻⁵ M RhB solution in less than 1 h at ambient conditions. In addition, the ability of Silica-SOM to be re-generated by mild sonication in ethanol after one RhB adsorption cycle was tested for the first time: the material was easily regenerated and used for six consecutive adsorption cycles; in each of them there is no loss in adsorption performance, which remains quantitatively high and extremely fast.

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来源期刊

Microporous and Mesoporous Materials 化学-材料科学：综合

CiteScore

10.70

自引率

5.80%

发文量

649

审稿时长

26 days

期刊介绍： Microporous and Mesoporous Materials covers novel and significant aspects of porous solids classified as either microporous (pore size up to 2 nm) or mesoporous (pore size 2 to 50 nm). The porosity should have a specific impact on the material properties or application. Typical examples are zeolites and zeolite-like materials, pillared materials, clathrasils and clathrates, carbon molecular sieves, ordered mesoporous materials, organic/inorganic porous hybrid materials, or porous metal oxides. Both natural and synthetic porous materials are within the scope of the journal. Topics which are particularly of interest include: All aspects of natural microporous and mesoporous solids The synthesis of crystalline or amorphous porous materials The physico-chemical characterization of microporous and mesoporous solids, especially spectroscopic and microscopic The modification of microporous and mesoporous solids, for example by ion exchange or solid-state reactions All topics related to diffusion of mobile species in the pores of microporous and mesoporous materials Adsorption (and other separation techniques) using microporous or mesoporous adsorbents Catalysis by microporous and mesoporous materials Host/guest interactions Theoretical chemistry and modelling of host/guest interactions All topics related to the application of microporous and mesoporous materials in industrial catalysis, separation technology, environmental protection, electrochemistry, membranes, sensors, optical devices, etc.