在Fe单原子催化剂上进行高效和可持续的过氧硫酸盐激活,通过结合补充的S物种来增强水的净化
Yangcen Liu1, Chunyu Zhang1, Xing Wang1
1School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China.
Journal of colloid and interface science
|April 10, 2025
概括
在单原子铁催化剂中引入硫种可以增强过氧硫酸盐 (PMS) 的活性,用于水处理. 这种优化的催化剂通过平衡PMS吸附和产品脱吸,促进有效的污染物去除和可持续性性能.
科学领域:
- 环境科学 环境科学
- 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:
- 单原子铁碳 (FeNC) 催化剂在水处理中对过氧硫酸盐 (PMS) 激活有希望.
- 性能受到PMS及其产物在Fe活性位点上的吸附/脱吸平衡的限制.
研究的目的:
- 优化Fe电子结构以实现高效和可持续的PMS激活.
- 为了研究硫种在FeNC催化剂的第二协调中的作用.
主要方法:
- 合成的单原子FeNC催化剂中添加了硫类硫 (CSC) 和氧化硫 (C-SOx).
- 调节了S物种的组成,以研究它们对催化性能和机制的影响.
- 在真实水样中评估PMS催化效率,激素产量和污染物去除.
主要成果:
- 优化的Fe-NSBC催化剂的PMS催化效率显著提高 (3.8x和21.1x) 与未使用的FeNC和CO2+基准相比.
- 催化剂表现出比最先进的FeNC催化剂更高的性能.
- 铁-NSBC/PMS系统有利于水友污染物去除的激素生产,显示出抗干扰和长期有效性.
结论:
- CSC和C-SOx的互补作用优化了Fe电子结构,以增强PMS激活.
- CSC促进了PMS吸附和减少,而C-SOx则促进了基因吸附和活性部位再生.
- 开发的催化剂为水处理中的先进氧化过程提供了可持续和有效的解决方案.
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