Synthesis of heterostructured microspheres for efficient removal of malachite green and basic fuchsine

IF 4.1 2区工程技术 Q2 ENGINEERING, CHEMICAL Chemical Engineering Science Pub Date : 2024-11-22 DOI:10.1016/j.ces.2024.120956

Bingxiang Wang, Liping Luan, Ziwei Li, Jiaxuan Wang, Yongfeng Liu, Yuzhong Niu, Hou Chen

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Abstract

The pollution of aqueous solution with dyes poses great hazard to the environment and human health. Adsorption has been extensively adopted for decontaminating dyes from wastewater. A series of heterostructured microspheres (PSDVB-PHEA) with adjustable structure and composition were prepared by emulsion interfacial polymerization for removing malachite green (MG) and basic fuchsine (BF). The heterostructured microspheres show the maximum adsorption capacities of 122.84 mg·g⁻¹ for MG and 84.25 mg·g⁻¹ for BF. The optimum adsorption pH for MG and BF is 7. The adsorption kinetic and isotherm process follow pseudo-second-order and Langmuir model. The microspheres also exhibit good performance in the presence of Na(Ⅰ) and K(Ⅰ). Adsorption mechanism demonstrates the OH, C-O and C = O groups participate in the adsorption. The heterostructured microspheres show excellent reusability and maintain 92.0 % regeneration rate after ten cycles. This work provided a simple method for synthesizing efficient adsorbents to remove MG and BF from aqueous solution.

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合成异质结构微球以高效去除孔雀石绿和碱性紫苏碱

染料对水溶液的污染对环境和人类健康造成了极大的危害。吸附技术已被广泛用于净化废水中的染料。通过乳液界面聚合法制备了一系列结构和成分可调的异质结构微球（PSDVB-PHEA），用于去除孔雀石绿（MG）和碱式品红（BF）。异质结构微球对孔雀石绿的最大吸附量为 122.84 mg-g-1，对碱性富钦碱的最大吸附量为 84.25 mg-g-1。MG 和 BF 的最佳吸附 pH 值为 7。吸附动力学和等温线过程遵循伪二阶和 Langmuir 模型。微球在 Na(Ⅰ) 和 K(Ⅰ) 存在下也表现出良好的性能。吸附机理表明 OH、C-O 和 C = O 基团参与了吸附。异质结构微球具有良好的可重复使用性，十次循环后再生率保持在 92.0%。这项工作为合成高效吸附剂以去除水溶液中的 MG 和 BF 提供了一种简单的方法。

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来源期刊

Chemical Engineering Science 工程技术-工程：化工

CiteScore

7.50

自引率

8.50%

发文量

1025

审稿时长

50 days

期刊介绍： Chemical engineering enables the transformation of natural resources and energy into useful products for society. It draws on and applies natural sciences, mathematics and economics, and has developed fundamental engineering science that underpins the discipline. Chemical Engineering Science (CES) has been publishing papers on the fundamentals of chemical engineering since 1951. CES is the platform where the most significant advances in the discipline have ever since been published. Chemical Engineering Science has accompanied and sustained chemical engineering through its development into the vibrant and broad scientific discipline it is today.