在高级铁单原子催化剂合成过程中可控制的供需效应,用于针对抗生素耐药性基因的氨酸氧化
Zhiyu Pan1, Xunheng Jiang1,2, Xia Feng1
1College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China.
Environmental science & technology
|March 6, 2025
概括
高负荷单原子催化剂有效地使用单片氧降低抗生素耐药性基因. 这种先进的氧化过程显示出高选择性和稳定性,为水处理提供了有前途的解决方案.
科学领域:
- 环境科学 环境科学
- 催化剂是一种催化剂.
- 水处理 处理水的方法
背景情况:
- 细胞外抗生素耐药性基因 (eARG) 构成了严重的环境威胁.
- 非激进的芬顿式催化是eARG降解的潜在方法.
- 开发高负荷单原子催化剂 (SACs) 用于选择性非激素生成至关重要.
研究的目的:
- 为了构建高负载的Fe SACs,具有统一的Fe-N4位点,以实现高效的过氧单硫酸盐激活.
- 调查单片氧 (1O2) 在eARG降解中的选择性和贡献.
- 在单分子水平上探索1O2与瓜相互作用的机制.
主要方法:
- 超分子组合被用来创建Fe SACs的优化协调平衡.
- 氧硫酸盐激活用于催化降解.
- 用单分子分辨率技术研究反应机制.
主要成果:
- 成功合成了具有均Fe-N4位点的高负荷Fe SACs (5.4-34.2重量%)
- 单一氧气 (1O2) 选择性和对eARG降解的贡献超过98%.
- 在10分钟内实现了7-log eARG降解,在2分钟内完全消除,超过现有的先进氧化过程.
结论:
- 开发的高负荷Fe SACs通过1O2生成提供了一种高效和选择性的eARG降解方法.
- 该战略在不同的eARG和水源矩阵中表现出卓越的普遍性和稳定性.
- 这项工作为设计用于有效处理水的先进催化剂提供了一个有前途的途径.
相关概念视频
00:57Antibiotic Selection
52.1K
Overview
52.1K
00:46Feedback Inhibition
53.5K
Biochemical reactions are occurring constantly in cells, converting starting substances to different products, usually with the help of enzymes that speed the reactions. Without enzymes, it would take far too long for most reactions to occur to be useful to the cell!
53.5K
01:27Combined Effects of Drugs: Synergism
3.7K
Synergism is a useful mechanism where combining two or more drugs is more effective than each constituent used alone. Such combinations are also called supra-additive interactions. The drugs collectively enhance the final therapeutic effect by acting on different targets. Another advantage is that the low dose of each constituent drug is sufficient to achieve the desired effect. This helps reduce the duration of therapy and lower the adverse effects of these drugs.
Such synergistic combinations...
Such synergistic combinations...
3.7K
02:17Reduction of Alkenes: Asymmetric Catalytic Hydrogenation
3.2K
Catalytic hydrogenation of alkenes is a transition-metal catalyzed reduction of the double bond using molecular hydrogen to give alkanes. The mode of hydrogen addition follows syn stereochemistry.
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
3.2K