在CeNiO3中设计缺电子B位点,以有效地激活PMS和降解四环素
Xin Tang1,2, Huiwei Ding1, Qiaofeng Han1
1Key Laboratory for Soft Chemistry and Functional Materials of Ministry of Education, Nanjing University of Science and Technology, Nanjing 210094, China. hanqiaofeng@njust.edu.cn.
Materials horizons
|July 25, 2025
概括
用铁添加的CeNiO3有效地激活过氧化硫酸盐 (PMS) 进行先进的氧化过程. 这种新型催化剂通过改善电子相互作用和稳定性来增强污染物降解,提供了更绿色的解决方案.
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:
- 氧硫酸盐 (PMS) 激活对于先进的氧化过程 (AOP) 是至关重要的.
- 催化剂和PMS之间的弱电子相互作用限制了AOP中的效率.
- 开发稳定高效的催化剂来激活PMS是一个持续的挑战.
研究的目的:
- 通过一种来自MOF的策略来合成Fe-doped CeNiO3 (Fe-CNO),以增强PMS激活.
- 为更强的PMS相互作用和高效的ROS生成设计缺乏电子的Ni位点.
- 评估Fe-CNO对污染物降解的催化性能.
主要方法:
- 联合铁和金属有机框架 (MOF) 衍生合成.
- 实验性表征和理论计算用于研究电子结构.
- 使用PMS激活对四环素 (TC) 降解的催化活性的评估.
主要成果:
- Fe-CNO 呈现出缺电子的 Ni 位点,增强了 PMS 相互作用和电子转移.
- MOF衍生架构提供了高表面积和活跃站点,加速了PMS激活.
- 在60分钟内,Fe-CNO实现了>90%的TC降解,几乎是原始CeNiO3.3的3倍.
- 催化剂显示出最小的浸出,广泛的pH容忍度 (4-12),以及出色的稳定性.
结论:
- 铁-CNO是AOPs中PMS激活的高效和稳定的催化剂.
- 缺电子B位工程是设计先进氧化催化剂的有效策略.
- 这项工作为开发用于水处理的环保催化剂提供了一个有希望的方法.
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