硫胺抗生素中介于单原子Cu催化剂/氧单硫酸盐系统中的电子转移过程中的氧化还原潜力:硫胺胺的选择性去除机制
Xinyuan Wang1, Taozhen Li1, Zihao Fan1
1College of Environment and Safety Engineering, Key Laboratory of Eco-chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, PR China.
Journal of hazardous materials
|December 14, 2024
概括
这项研究表明,硫胺抗生素的氧化还原潜力决定了它们在单原子催化剂激活的氧硫酸盐系统中的选择性降解. 了解污染物的特性是有效处理废水的关键.
科学领域:
- 环境化学环境化学
- 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:
- 单原子催化剂 (SACs) 激活过氧化硫酸盐 (PMS) 是有效的污染物降解.
- 研究主要集中在SAC的金属和结构上,忽视了污染物的特定特性.
- 了解污染物的影响对于优化SAC/PMS系统至关重要.
研究的目的:
- 在基于Cu的SAC/PMS系统中研究硫胺抗生素特性及其降解率之间的关系.
- 确定污染物氧化还原潜力在选择性降解中的作用.
- 为设计硫胺污染废水的有效处理策略提供见解.
主要方法:
- 在生物炭中嵌入的Cu单原子催化剂的合成 (CuSA30@C).
- 使用合成的催化剂激活过氧硫酸盐 (PMS).
- 通过半波电位测量 (φ1/2) 来确定硫胺抗生素 (SAs) 的氧化还原潜力.
- 在SAs' φ1/2值及其降解速率常数 (kobs) 之间的相关性分析.
主要成果:
- 在CuSA30@C/PMS系统中,SA的氧化还原潜力 (φ1/2) 和它们的降解率 (kobs) 之间发现了强烈的相关性 (R2=0.916).
- SAs的氧化还原潜力被确定为控制电子转移氧化的一个关键因素.
- 能源差距分析进一步支持SAS的氧化还原潜力的关键作用.
结论:
- 污染物的氧化还原潜力显著影响SAC/PMS系统中的选择性降解.
- CuSA30@C/PMS系统证明了硫胺抗生素根据它们的氧化还原特性选择性降解.
- 这项研究为废水处理的芬顿式反应中污染物驱动的选择性提供了新的视角.
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