多功能Zwitterionic-WS2膜用于增强染料去除和生物污染阻力在向前透中
Luis Bermúdez-Morales1, Daniela Herrera-Molina2, Roberto Serrano-Pomales3
1Department of Chemistry, University of Puerto Rico, Rio Piedras Campus, 17 University Ave. 1701, San Juan, Puerto Rico 00925, United States.
ACS omega
|January 8, 2026
概括
这项研究引入了一种新的生物灵感膜,使用二硫化物 (WS2) 纳米薄膜进行先进的水处理. 这种创新材料有效地去除污染物并防止生物污染,为新出现的污染物提供了有希望的解决方案.
科学领域:
- 材料科学与工程 材料科学与工程
- 环境科学与技术 环境科学与技术
- 纳米技术 纳米技术
背景情况:
- 传统的水处理方法与新出现的污染物和生物污染物作斗争.
- 开发先进的材料对于高效和可持续的水净化至关重要.
- 向前透 (FO) 具有优势,但需要优化膜技术.
研究的目的:
- 开发一种生物灵感的多功能膜,以提高污染物去除和抗生物污染性能.
- 将二硫化 (WS2) 纳米薄膜集成到多硫 (PSF) 膜中,以提高前向透 (FO) 的性能.
- 调查新型膜对模型染料的光降解和吸附能力及其对细菌增殖的有效性.
主要方法:
- 用二甲基胺N氧化物 (DEAO) 和二硫化 (WS2) 纳米片修饰的聚硫 (PSF) 膜的合成.
- 使用扫描电子显微镜 (SEM),表面z电位和水接触角 (CA) 测量进行表征.
- 评估水的透性,染料的排斥 (罗达胺B和硫胺),光降解,吸附和抗菌活性.
- 密度函数理论 (DFT) 计算以了解电子带边和吸附机制.
主要成果:
- 该PSF-DEAO@WS2膜证明了模型染料的高效光降解 (RhB约50%) 和吸附 (SR101约80%).
- 与对照膜相比,染料排斥性能显著提高 (30-75%),在FO条件下,近99%的RhB被排斥.
- 膜表现出极好的水流,并有效地抑制了大肠杆菌的扩散,这表明它具有抗生物污染的特性,这种特性归因于WS2的ROS生成.
结论:
- 开发的生物灵感膜整合了聚合物和半导体特性,用于优质的水处理.
- 二硫化物 (WS2) 纳米片增强污染物降解,吸附,并提供显著的抗生物污染能力.
- 这种多功能膜设计为先进的净水技术提供了一个有前途的途径,解决新出现的污染物和生物污染的挑战.
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