用添加的CoFe - 普鲁士蓝色类似物 (PBA) - 衍生氧化物具有缺陷工程,用于对SMX降解的高效过氧硫酸盐激活
Yonglei Xing1, Chunlin Li1, Wenbo Lv1
1State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, National Demonstration Center for Experimental Chemistry Education, School of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, 750021, PR China.
Environmental research
|October 16, 2025
概括
用添加的铁酸盐纳米立方体有效地降解使用过氧化硫酸盐的硫甲. 这种先进的氧化过程利用了激进和非激进的协同路径来有效地处理水.
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:
- 硫甲醇 (SMX) 是水中常见的制药污染物.
- 传统的水处理方法难以有效地去除SMX.
- 为高级氧化过程 (AOPs) 开发高效的催化剂至关重要.
研究的目的:
- 为了合成添加的铁酸盐纳米立方体 (P-FCO).
- 为了研究P-FCO/氧硫酸盐 (PMS) 系统的SMX降解.
- 阐明SMX去除的机制和兴奋剂的作用.
主要方法:
- CoFe-PBA前体的高温氧化和兴奋剂.
- 合成的P-FCO纳米立方体.
- 使用P-FCO/PMS进行SMX降解的批量实验.
- 对降解动力学和产品的分析.
- 密度函数理论 (DFT) 的计算.
主要成果:
- 在10分钟内,P-FCO/PMS实现了99%的SMX去除 (20ppm SMX).
- 表面速度常数为1.52分钟-1,优于其他Cofé催化剂.
- 兴奋剂增强了氧气空缺和低价值Co2+/Fe2+,改善了PMS吸附.
- M{}Co/Fe) -O-P键调节电子结构,促进直接的电子传输.
- 协同激进 (SO4•-) 和非激进 (1O2,直接电子转移) 途径都参与其中.
结论:
- 兴奋剂是一种有效的策略,用于提高AOPs中的催化剂性能.
- 通过直接电子转移主导的机制,P-FCO/PMS系统证明了SMX降解的高效率.
- 这项研究提供了对先进水处理催化剂设计的见解.
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