在PMS激活过程中对非激素生成的轴向增强,该过程中介于与Co单原子催化剂封装的纳米颗粒的介导
Yihui Hu1, Hong Guo1, Yuancai Lv2
1Fujian Provincial Engineering Research Center of Rural Waste Recycling Technology, College of Environment & Safety Engineering, Fuzhou University, Fuzhou 350116, China; College of Chemical Engineering, Fuzhou University, Fuzhou 350116, China.
Journal of hazardous materials
|August 13, 2025
概括
用剂合碳封装的纳米颗粒在芬顿类系统中轴向增强单原子催化剂. 这种复合催化剂显著提高了污染物降解效率,并显示出真正的废水处理的希望.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 催化剂是一种催化剂.
背景情况:
- 芬顿类系统利用单个原子 (SA) 和纳米粒子 (NP) 进行催化.
- SA和NP之间的协同作用机制已得到充分研究,但NP对SA的轴向增强尚未得到充分研究.
研究的目的:
- 阐明纳米颗粒在氧硫酸盐 (PMS) 激活中的单个原子表面上的轴向增强机制.
- 开发一种新的复合催化剂,以有效降解污染物.
主要方法:
- 一种新型CoNPs-SAs@N-C催化剂的合成,其中包括共存的单个原子 (Co SAs) 和封装的纳米粒子 (Co NPs).
- 通过降解效率测试对催化性能进行调查.
- 使用密度函数理论 (DFT) 计算来理解底层的电子和结构机制.
主要成果:
- 与单原子系统相比,CoNPs-SAs@N-C催化剂的降解效率增加了4.8倍.
- DFT计算显示,Co NPs增强了与Co SAs的界面电子转移和PMS相互作用,导致单片氧 (1O2) 生产增加.
- 复合系统在实际废水处理中表现出长期的稳定性.
结论:
- 用剂合的石墨碳封装纳米粒子轴向增强单原子催化剂活性.
- 复合催化剂为高效和稳定的废水处理提供了一个有希望的解决方案.
- 这些发现有助于我们更好地理解纳米单原子复合物催化,用于净化水和其他应用.
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