由CoFe双金属合金催化剂启动的调节氧化途径,可有效消除抗生素
Zhengyang Tong1, Qi Li1, Chen Gao1
1School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China.
Journal of colloid and interface science
|December 19, 2025
概括
一种新型的铁合金催化剂通过产生特定的活性氧物种 (ROS) 在废水中有效降解抗生素和抗生素耐药基因 (ARG). 这种先进的氧化过程为环境修复提供了稳定且可重复使用的解决方案.
科学领域:
- 环境科学 环境科学
- 催化剂是一种催化剂.
- 材料科学 材料科学 材料科学
背景情况:
- 废水中的抗生素和抗生素耐药性基因 (ARG) 是环境和公共卫生方面的重大问题.
- 需要有效的治疗策略来缓解抗生素耐药性的传播.
研究的目的:
- 开发一种用于废水中四环素化物和ARG降解的新型催化剂.
- 阐明反应性氧物种 (ROS) 生成的机制及其在污染物降解中的作用.
主要方法:
- 通过热解合成双金属铁 (CoFe) 合金催化剂,以添加碳 (PBA@C-X) 为支.
- 使用电子偏磁共振 (EPR) 光谱和ROS量化进行表征.
- 动力相关性和密度函数理论 (DFT) 计算,以了解催化机制.
- 连续流体实验以评估长期稳定性和可重复使用性.
主要成果:
- CoFe合金催化剂选择性地产生了ROS,从而有效降解了四环素化物 (k = 0.58分−1).
- 在不同的催化剂组成下,观察到主导的ROS从超氧化基 (•O2−) 转变为单片氧 (1O2).
- 确定了CoFe合金部位是活性中心,增强了从添加碳到过氧硫酸盐 (PMS) 的电子转移.
- 催化剂有效降解了四环素抗性基因,福井功能分析确定了特定的氧化攻击部位.
结论:
- 基于CoFe的催化剂为废水处理中的先进氧化过程 (AOP) 提供了可调的策略.
- Co-Fe催化剂的电子结构工程调节ROS生成,以有效地减少ARG.
- 这项研究为设计用于细胞外ARG去除的催化剂提供了机制性见解.
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