设计一个Co-O-V三脚架电子桥以通过高价值的Co(IV) =O促进非激进的PMS激活
Weifang Zhang1, Bingchuan Chen1, Xuanzi Zhang1
1College of Environmental and Resource Sciences, Fujian Normal University, Fuzhou, Fujian 350117, China.
Journal of hazardous materials
|December 13, 2025
概括
在V3O7·H2O上,一种新的单原子催化剂 (Co-VOH) 通过先进的氧化过程 (AOP) 有效地降解硫甲醇 (SMX). 这种催化剂通过独特的电子桥激活硫酸盐 (PMS),使污染物快速去除,并显示出广泛的环境应用潜力.
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:
- 单原子催化剂对使用硫酸盐 (PMS) 的高级氧化过程 (AOP) 是有前途的.
- 产生高价值金属氧物种是有效降解污染物的关键.
- 开发有效的催化剂对于新出现的污染物,如硫甲醇 (SMX) 是至关重要的.
研究的目的:
- 开发一种支持V3O7·H2O的无原子单原子催化剂 (Co-VOH),用于高效的SMX降解.
- 调查催化机制,重点关注高价值金属氧物种和电子转移通路的产生.
- 评估催化剂在各种环境条件下的性能,稳定性和适用性.
主要方法:
- 一种无异质原子的晶体V3O7·H2O支持的单原子Co催化剂 (Co-VOH) 的合成.
- 使用Co-VOH/PMS系统进行SMX去除的降解实验.
- 谱学和理论分析 (例如,XPS,DFT) 以阐明催化机制和电子结构.
- 在真实水样和连续流条件下评估催化剂的稳定性和性能.
主要成果:
- 同-VOH/PMS系统在15分钟内快速清除了10mg/L的SMX,具有很高的第二阶速率常数 (1228分钟-1M-1).
- 主要的降解途径是非激进的,由选择性生成Co(IV) =O物种驱动.
- 一个Co-O-V三脚电子桥促进了电子传输和增强了PMS激活.
- 催化剂表现出新出现的污染物的广泛降解和显著的稳定性.
结论:
- 原子工程 Co-VOH 是基于 PMS 的 AOP 的高效催化剂,特别是用于 SMX 降解.
- 独特的电子结构和Co-O-V桥是催化剂卓越性能和选择性非激进通路的关键.
- 催化剂表现出强大的环境适应性和实际用水净化应用的潜力.
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