功能化淀粉中的芳香系统和离子系统对阳离子染料去除性能的贡献

IF 4.5 3区工程技术 Q1 CHEMISTRY, APPLIED

Reactive & Functional Polymers Pub Date : 2025-04-15 DOI:10.1016/j.reactfunctpolym.2025.106303

Jacqueline Torres-Romero, Jorge Ramón Robledo-Ortíz, Yolanda González-García, Jessica Badillo-Camacho, José Antonio Gutiérrez-Ortega, Ricardo Manríquez-González

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引用次数: 0

摘要

研究了水溶性染料与功能化生物基材料之间的离子和芳香相互作用。为此，通过元素分析、FTIR和13C固体核磁共振证实，商品玉米淀粉成功地用芳香tosyyl（淀粉- ts）和天冬氨酸N-Cbz保护（淀粉- asp -N-Cbz）功能化。比表面积和Z电位的增加决定了淀粉- asp - n - cbz的吸附性能和阴离子稳定性。通过动力学实验考察了功能化淀粉材料在50 mg/L阳离子孔雀石绿和亚甲基蓝染料溶液中的吸附性能，并与未改性淀粉进行了比较。与起始淀粉相比，淀粉- asp - n - cbz对孔雀石绿的吸附量增加了3.1倍，淀粉- ts对亚甲基蓝的吸附量增加了2.2倍。在这两种情况下，伪二级模型最好地描述了吸附动力学。结果表明，孔雀石绿的主要吸附机理是淀粉- asp - n - cbz上的离子相互作用，而亚甲基蓝更适合于淀粉- ts上的芳香相互作用。在任何情况下，通过对染料吸附前后样品的FTIR光谱观察，吸附性能与每个功能化淀粉的组成部分有关，这些淀粉可以在伴随的相互作用系统中发生。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Contribution of the aromatic and ionic systems in functionalized starch in the remotion performance of cationic dyes

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Contribution of the aromatic and ionic systems in functionalized starch in the remotion performance of cationic dyes

The contribution of the ionic and aromatic interactions between water-soluble dyes and functionalized bio-based materials was studied. For this purpose, commercial corn starch was successfully functionalized with aromatic tosyl groups (Starch-TS) and aspartate N-Cbz protected (Starch-Asp-N-Cbz) as was corroborated by elemental analysis, FTIR and ¹³C solid state NMR. The increase in specific surface area and Z potential defined the adsorption properties and anionic stability of Starch-Asp-N-Cbz. The adsorption performance of the functionalized starch materials was tested by kinetic experiments with 50 mg/L of cationic malachite green and methylene blue dye solutions and compared with unmodified starch. A 3.1-fold increase in adsorption of malachite green on Starch-Asp-N-Cbz and a 2.2-fold increase in methylene blue on Starch-TS was observed compared to the starting starch. In both cases, the pseudo-second order model best described adsorption kinetics. These results demonstrated that the ionic interaction on Starch-Asp-N-Cbz was the predominant adsorption mechanism for malachite green, whereas methylene blue was more suitable for the aromatic interaction on Starch-TS. In any case, the adsorption performance is addressed to the moieties composition of each functionalized starch that can take place in a concomitant interaction system as was observed by FTIR spectra of the samples before and after the adsorption of dyes.

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来源期刊

Reactive & Functional Polymers 工程技术-高分子科学

CiteScore

8.90

自引率

5.90%

发文量

259

审稿时长

27 days

期刊介绍： Reactive & Functional Polymers provides a forum to disseminate original ideas, concepts and developments in the science and technology of polymers with functional groups, which impart specific chemical reactivity or physical, chemical, structural, biological, and pharmacological functionality. The scope covers organic polymers, acting for instance as reagents, catalysts, templates, ion-exchangers, selective sorbents, chelating or antimicrobial agents, drug carriers, sensors, membranes, and hydrogels. This also includes reactive cross-linkable prepolymers and high-performance thermosetting polymers, natural or degradable polymers, conducting polymers, and porous polymers. Original research articles must contain thorough molecular and material characterization data on synthesis of the above polymers in combination with their applications. Applications include but are not limited to catalysis, water or effluent treatment, separations and recovery, electronics and information storage, energy conversion, encapsulation, or adhesion.