层级生物模拟聚二甲基西洛干涂层聚氨海绵用于可持续的海水纳米塑料去除
Yuxin Zheng1, Yuanyuan Luo2, Shengjia Ma2
1Shanghai Engineering Research Center of Biotransformation of Organic Solid Waste, Institute of Eco-Chongming and School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China; Shanxi Key Laboratory of Water Pollution Prevention and Utilization, Taiyuan, Shanxi 030009, China.
Journal of hazardous materials
|November 14, 2025
概括
一种新的超疏水海绵有效地从水中去除纳米塑料 (NP). 这种仿生材料具有高容量,快速吸收和优异的可重复使用性,为NP污染提供了可持续的解决方案.
科学领域:
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 微塑料 (MP) 和纳米塑料 (NP) 是广泛存在的环境污染物.
- 纳米塑料由于其小尺寸和体性质,在去除过程中存在独特的挑战.
- 现有的MP删除技术往往对NP无效.
研究的目的:
- 开发一种新型材料,有效地从水中去除纳米塑料.
- 以自然结构为灵感,创建一种可重复使用和强大的吸附剂.
- 为应对水生环境中纳米塑料污染的挑战.
主要方法:
- 仿生设计模拟海绵,莲花叶表面和气泡.
- 通过浸泡涂层和超声波制造,制造聚甲基 (PDMS) 涂层聚氨 (PU) 超疏水海绵 (PDMS@PU).
- 测试聚烯纳米塑料 (PS-NPs-240) 的吸附能力,动力学,可重复使用性和环境强度.
主要成果:
- 对于PS-NPs-240,PDMS@PU实现了406.9 mg/g的最大吸附能力.
- 快速吸附发生在30秒内,在30个再生周期后91.7%的保留率.
- 该材料证明了环境稳定性,并在扩大规模的实验中实现了96.2%的PS-NPs-240捕获率.
结论:
- 开发的PDMS@PU海绵提供了一种高效和可持续的纳米塑料去除方法.
- 生物仿真设计原则对于创建先进的水处理材料至关重要.
- 这项技术为打击纳米塑料污染提供了一个有前途的解决方案.
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