定制原子分散的界面微环境,以促进用于净化水的电子转移过程
Zhiyuan Huang1,2,3, Qi Hao2, Songru Xie4
1Key Laboratory of Environmental Remediation and Ecological Health, Ministry of Education, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, Zhejiang 310058, China.
Environmental science & technology
|February 4, 2026
概括
具有不对称Zn-N3Cl位点的环保无害单原子催化剂 (SAC) 有效地降解水中的污染物. 这种设计增强了电子转移过程 (ETP) 以实现高效的水资源整治.
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:
- 芬顿式反应对于水的修复至关重要,但需要高效的电子转移过程 (ETP).
- 单原子催化剂 (SAC) 提供高效率,但需要精确的协调来激活像这样的氧化还原惰性金属.
- 开发用于先进水处理的环境良性催化剂是全球优先事项.
研究的目的:
- 设计和合成一个不对称的 Zn 单原子催化剂 (SAC) 与 Zn-N3Cl 位点,以增强类似 Fenton 的水处理.
- 调查兴奋剂在激活部位和促进电子转移中的作用.
- 评估催化剂在降解硫甲醇 (SMX) 的性能及其在实际废水处理中的效率.
主要方法:
- 密度函数理论 (DFT) 用于预测催化剂设计.
- 不对称的Zn-N3Cl站点是在添加碳 (NC) 支持上建造的.
- 进行了批量实验,以评估SMX去除和过氧硫酸盐 (PMS) 的利用率.
- 进行了机制研究,包括电子结构分析,以了解催化途径.
主要成果:
- 与Zn-N3Cl催化剂相比,Zn-N3Cl催化剂的SMX去除率是4.4倍,PMS利用效率是Zn-N4的2.3倍.
- 兴奋剂显著改变了Zn位点的电子结构,提高了它们的电子传输能力.
- 催化剂在广泛的pH范围和环境干扰的情况下表现出强大的性能.
- 制药废水的连续流通处理显示了持续的有效性.
结论:
- 不对称的Zn-N3Cl位点有效地激活了芬顿类反应的氧化回归惰性,促进了ETP.
- Zn-N3Cl/NC的合理设计为可持续和高效的水资源整治提供了一个有前途的战略.
- 这种方法为开发用于先进氧化过程的新型,环保的单原子催化剂提供了蓝图.
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