基于CoCu的ZSM-5激活PMS,以有效降解LEV:双机制降解由单一氧气主导
Xiaoning Jia1, Haixin He1, Xia Zhao1
1College of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou, 730050, PR China.
Environmental research
|April 10, 2025
概括
一种新的基于CoCu的ZSM-5材料有效地使用过氧硫酸盐 (PMS) 降解了勒沃素 (LEV). 这种先进的氧化过程显示了在水中去除抗生素的高效率和稳定性.
科学领域:
- 环境化学环境化学
- 材料科学 材料科学 材料科学
- 催化剂是一种催化剂.
背景情况:
- 利沃素 (LEV) 是水生环境中的持续性制药污染物.
- 现有的LEV降解方法往往缺乏效率或稳定性.
- 先进的氧化过程 (AOPs) 显示出污染物去除的前景.
研究的目的:
- 为了合成基于CoCu的ZSM-5 (CCM-0.2) 材料来激活过氧硫酸盐 (PMS).
- 使用CCM-0.2 / PMS系统调查勒沃素 (LEV) 的降解.
- 阐明降解机制,并评估系统的实际适用性.
主要方法:
- 在现场合成基于CoCu的ZSM-5 (CCM-0.2) 材料.
- 通过CCM-0.2激活过氧硫酸盐 (PMS) 来降解勒沃素 (LEV).
- 使用LC-MS进行降解产品的表征和使用ECOSAR软件进行毒性评估.
- 通过火实验和电子磁共振 (EPR) 检测来阐明机制.
主要成果:
- 在最佳条件下 (pH5-9),CCM-0.2/PMS系统在30分钟内实现了96%的LEV降解.
- 催化剂表现出极好的稳定性,在五个周期后保持81%的降解效率.
- 确定了一种双根基/非根基降解机制,单片氧 (1O2) 是主要的反应物种.
- 该系统显示了对各种抗生素的广泛适用性和适应不同水矩阵的适应性.
结论:
- 合成的CCM-0.2材料是LEV降解中PMS激活的高效催化剂.
- CCM-0.2/PMS系统为从水中去除制药污染物提供了一个有希望的解决方案.
- 鉴定的降解途径和中间毒性分析为环境修复提供了关键的见解.
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