通过Co1Fe2/B-MXene膜快速激活过氧硫酸盐,以去除有机污染物
Yuhan Wang1, Yan Shao1, Yanying Wei2
1School of Environmental Science and Engineering, Nanjing Tech University, Nanjing, 211816, PR China.
Environmental research
|November 22, 2025
概括
一种新型的配合的MXene膜与CoFe纳米颗粒有效地使用过氧硫酸盐 (PMS) 去除有机污染物. 这种先进的氧化工艺 (AOP) 为净化水提供了具有高降解率和稳定的可持续解决方案.
科学领域:
- 材料科学:新型纳米材料的合成和表征.
- 环境科学:应用先进的氧化过程来处理水.
- 化学工程:开发膜过技术.
背景情况:
- 耐火有机污染物对传统的水处理方法构成重大挑战.
- 先进的氧化工艺 (AOP) 与膜过相结合,为净化水提供了一个有前途的方法.
- 基于MXene的材料正因其独特的特性而成为AOP中的高效催化剂.
研究的目的:
- 为了合成和表征添加的MXene支持的CoFe纳米颗粒 (Co1Fe2/B-MXene) 用于水处理.
- 制造一个Co1Fe2/B-MXene膜,并评估其在氧硫酸盐 (PMS) 驱动的AOP中的性能.
- 调查兴奋剂在增强膜的催化活性和稳定性方面的作用.
主要方法:
- 一步融盐蚀刻策略,用于合成Co1Fe2/B-MXene粉末.
- 用于制造Co1Fe2 / B-MXene膜的真空过.
- 使用XRD,BET,SEM,HRTEM,XPS和电化学分析进行表征.
- 通过在不同条件下降解酸7 (AO7) 的性能评估,包括连续运行和火实验.
主要成果:
- 在高流量下,Co1Fe2/B-MXene膜在短暂的停留时间 (13.38 ms) 内实现了AO7的100%降解.
- 与未使用的膜相比,兴奋剂显著提高了催化性能,促进了电荷迁移,提高了污染物降解效率.
- 膜在广泛的pH范围 (3-6.5) 中表现出卓越的催化活性,耐离子干扰耐受性和自我清洁能力,在24小时内保持>90%的降解效率.
结论:
- 合成的Co1Fe2 / B-MXene膜是一种高效和稳定的催化材料,用于水处理中的PMS驱动的AOP.
- 兴奋剂是提高MXene基催化剂用于清除耐火有机污染物的性能的一个关键因素.
- 单点氧 (1O2) 被确定为主要的反应性氧物种,负责污染物降解.
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