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可降解的四分位氨盐改性大米草纤维素/花素复合气凝,用于高效的微塑料吸附

Pengcheng Ma¹, Yuanfeng Pan¹, Pingxiong Cai²

¹Guangxi Colleges and Universities Key Laboratory of New Technology and Application in Resource Chemical Engineering, School of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, China.

International journal of biological macromolecules

|November 7, 2025

概括

研究人员开发了一种新型的可生物降解的气凝,该气凝由米和酸盐制成,用于从水中去除微塑料. 这种可持续材料具有很高的吸附能力和稳定性,为水污染提供了有希望的解决方案.

科学领域:

环境科学环境科学
材料科学材料科学材料科学
聚合物化学聚合物化学

背景情况:

微塑料污染对水生生态系统构成重大威胁.
迫切需要有效和可持续的微塑料清除材料.
利用废物进行整治符合循环经济原则.

研究的目的:

开发一种新的,可生物降解的复合气凝,用于微塑料吸附.
为了提高米草衍生的纤维素的吸附性能.
为了研究协同吸附机制和材料稳定性.

主要方法:

草纤维素被改制为2,3-环三甲基化物 (EPTMAC) 并与奇托 (CS) 结合.
合成了一种新型的四级氨盐修饰纤维素/花素复合气凝 (RSCECA).
使用聚烯微塑料 (PS) 评估了吸附能力,稳定性和可重复使用性.
用鉴定和DFT计算来理解吸附机制.

主要成果:

对于PS微塑料,RSCECA表现出389.65mg/g的高吸附能力.
协同吸附通过静电和pi-pi相互作用发生.
该材料在各种pH值 (4-10) 和温度 (20-40°C) 中表现出极好的稳定性.
在真实水样 (河流,湖泊,自来水) 中实现了高清除率 (>82%).
吸附效率在五个循环后仍然高于81%.

结论:

开发的RSCECA是一种高效且可重复使用的微塑料吸附剂.
使用大米草废弃物有助于可持续和环保的整治方法.
这种新型可生物降解的气凝在解决水生环境中的微塑料污染方面显著有前途.

关键词:

生物降解性生物降解性微塑料的吸附方式经过修改的复合气凝.

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