A layer-by-layer assembled superhydrophobic composite aerogel for rapid and high-capacity removal of microplastics from beverages.

IF 12.2 2区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Materials Horizons Pub Date : 2025-06-30 DOI:10.1039/d5mh00512d

Qiyue Zhao, Xingxu Jiang, Ergen Bao, Hong-Man Hou, Gong-Liang Zhang, Jingran Bi

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引用次数: 0

Abstract

The hierarchical integration of porous materials with rigid frameworks and biopolymer components enhances their adsorption performance. While combining porous substances with cellulose nanofibers (CNFs) to create high-performance hybrid aerogels holds significant potential, achieving this remains challenging due to suboptimal interfacial bonding and insufficient structural reinforcement from CNFs. In this study, a superhydrophobic composite aerogel (AG^U6-(OH)₂@PMSQ) was synthesized using a sequential bottom-up and layer-by-layer in situ growth strategy based on a robust dual-network structure formed by the "egg-box structure" and CNFs. The hierarchical porosity and superhydrophobicity of AG^U6-(OH)₂@PMSQ provided excellent adsorption capacity and sensitivity for polystyrene microplastics (PSM). The adsorption kinetics revealed that the adsorption capacity for PSM reached an impressive 555.556 mg g^-1 within a short timeframe of 100 min. D-R model analysis indicated that hydrophobic interactions were the primary driving force behind the adsorption of PSM by AG^U6-(OH)₂@PMSQ. Meanwhile, simulation calculations confirmed that hydrogen bonding and C-H⋯π interactions also contribute to the adsorption process. Furthermore, AG^U6-(OH)₂@PMSQ demonstrated exceptional adsorption stability, reproducibility, and a high PSM removal rate in aqueous matrices. This innovative research offers a new insight for contaminant control in complex matrix environments.

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一种逐层组装的超疏水复合气凝胶，用于快速和高容量地去除饮料中的微塑料。

具有刚性框架和生物聚合物组分的多孔材料的层次化集成提高了它们的吸附性能。虽然将多孔物质与纤维素纳米纤维（CNFs）结合起来制造高性能的混合气凝胶具有巨大的潜力，但由于界面键合不理想和CNFs的结构增强不足，实现这一目标仍然具有挑战性。在本研究中，基于“蛋盒结构”和CNFs形成的稳健双网络结构，采用顺序自下而上、逐层原位生长策略合成了超疏水复合气凝胶（AGU6-(OH)2@PMSQ）。AGU6-(OH)2@PMSQ的分层孔隙和超疏水性为聚苯乙烯微塑料（PSM）提供了优异的吸附能力和敏感性。吸附动力学表明，AGU6-(OH)对PSM的吸附量在100 min的短时间内达到了惊人的555.556 mg g-1。D-R模型分析表明疏水相互作用是AGU6-(OH)2@PMSQ吸附PSM的主要驱动力。同时，模拟计算证实，氢键和C-H⋯π相互作用也有助于吸附过程。此外，AGU6-(OH)2@PMSQ在水性基质中表现出优异的吸附稳定性、再现性和高PSM去除率。这项创新研究为复杂基质环境中的污染物控制提供了新的见解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Materials Horizons CHEMISTRY, MULTIDISCIPLINARY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

18.90

自引率

2.30%

发文量

306

审稿时长

1.3 months

期刊介绍： Materials Horizons is a leading journal in materials science that focuses on publishing exceptionally high-quality and innovative research. The journal prioritizes original research that introduces new concepts or ways of thinking, rather than solely reporting technological advancements. However, groundbreaking articles featuring record-breaking material performance may also be published. To be considered for publication, the work must be of significant interest to our community-spanning readership. Starting from 2021, all articles published in Materials Horizons will be indexed in MEDLINE©. The journal publishes various types of articles, including Communications, Reviews, Opinion pieces, Focus articles, and Comments. It serves as a core journal for researchers from academia, government, and industry across all areas of materials research. Materials Horizons is a Transformative Journal and compliant with Plan S. It has an impact factor of 13.3 and is indexed in MEDLINE.