Sustainably Polyanionic Hyaluronic Acid-Based Hydrogel for Efficient Removal of Fe³⁺, Cd²⁺, and Pb²⁺ Ions in Soil with Enhanced Sorghum Growth.

IF 5.5 2区化学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY

Biomacromolecules Pub Date : 2025-06-23 DOI:10.1021/acs.biomac.5c00427

Hongli Li, Xueqin Wang, Xiaoyu Song, Hanyuan Fu, Lige Yang, Dachao Deng, Kedong Xu, Lili Li, Fei Li

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引用次数: 0

Abstract

Toxic metals damage soil quality and harm human health via bioaccumulation, necessitating eco-friendly removal techniques. Hydrogel-based adsorption offers a promising approach for heavy metal extraction. Nevertheless, the potential of innovative hyaluronic acid (HA)-based hydrogels has not been fully investigated. In this study, levodopa and tannic acid were first grafted onto HA using condensation reactions. Subsequently, the HLDT hydrogel was developed by grafting Na-AMPS onto the HA derivative through free radical polymerization, which enhanced its mechanical properties for metal ion adsorption. The HLDT hydrogel shows superior metal adsorption capacities of 193.3, 316.9, and 49.6 mM/g for Cd, Fe, and Pb, respectively. Notably, the exceptional adsorption, desorption, and regeneration capabilities, make it ideal for recycling. Additionally, the HLDT hydrogel can remove heavy metals from polluted soil efficiently and enhance the sorghum growth characteristics. Our findings provide a potential solution for the sustainable recovery of contaminated farmland while enhancing productivity.

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基于多阴离子透明质酸的可持续水凝胶对土壤中Fe3+、Cd2+和Pb2+离子的高效去除

有毒金属通过生物积累破坏土壤质量，危害人体健康，需要生态友好的去除技术。水凝胶吸附是一种很有前途的重金属提取方法。然而，基于透明质酸（HA）的创新型水凝胶的潜力尚未得到充分的研究。本研究首先通过缩合反应将左旋多巴和单宁酸接枝到透明质酸上。随后，通过自由基聚合将Na-AMPS接枝到HA衍生物上，制备了HLDT水凝胶，增强了其吸附金属离子的力学性能。HLDT水凝胶对Cd、Fe和Pb的吸附能力分别为193.3、316.9和49.6 mM/g。值得注意的是，特殊的吸附，解吸和再生能力，使其成为回收的理想选择。此外，HLDT水凝胶可以有效去除污染土壤中的重金属，提高高粱的生长特性。我们的研究结果为污染农田的可持续恢复提供了一个潜在的解决方案，同时提高了生产力。

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

Biomacromolecules 化学-高分子科学

CiteScore

10.60

自引率

4.80%

发文量

417

审稿时长

1.6 months

期刊介绍： Biomacromolecules is a leading forum for the dissemination of cutting-edge research at the interface of polymer science and biology. Submissions to Biomacromolecules should contain strong elements of innovation in terms of macromolecular design, synthesis and characterization, or in the application of polymer materials to biology and medicine. Topics covered by Biomacromolecules include, but are not exclusively limited to: sustainable polymers, polymers based on natural and renewable resources, degradable polymers, polymer conjugates, polymeric drugs, polymers in biocatalysis, biomacromolecular assembly, biomimetic polymers, polymer-biomineral hybrids, biomimetic-polymer processing, polymer recycling, bioactive polymer surfaces, original polymer design for biomedical applications such as immunotherapy, drug delivery, gene delivery, antimicrobial applications, diagnostic imaging and biosensing, polymers in tissue engineering and regenerative medicine, polymeric scaffolds and hydrogels for cell culture and delivery.