新型晶体/无形异相Fe-Mn核心链在现场在水溶液中产生过氧化
Jianwang Wu1, Mei Lin1, Ming Liu1
1Fujian Key Laboratory of Pollution Control and Resource Reuse, College of Environmental and Resource Science, Fujian Normal University, Fuzhou 350007, Fujian Province, China.
Journal of colloid and interface science
|July 19, 2024
概括
新的Fe-Mn核心外催化剂在现场有效地产生过氧化 (H2O2). 这种环保方法还可以同时从水中去除诸如恩罗夫洛克萨之类的污染物.
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:
- 过氧化 (H2O2) 是一种重要的环保氧化剂,需求日益增加.
- 通过O2激活在现场生成H2O2,为传统方法提供了一个可持续的替代方案.
研究的目的:
- 设计新型晶体/形态异相Fe-Mn核心链 (ZVI-Mn) 以有效地在现场产生H2O2.
- 研究ZVI-Mn对H2O2生产和污染物降解的催化性能和机制.
主要方法:
- ZVI-Mn核心外催化剂的合成.
- 在现场进行H2O2生成产量测量.
- 拉曼光谱和密度函数理论 (DFT) 的计算.
- 电化学试验和电子磁共振 (EPR) 分析.
- 在不同的pH值下进行恩罗夫洛克萨去除实验.
主要成果:
- 在5分钟内,ZVI-Mn实现了103.7 mg·L-1的高H2O2产量,明显优于ZVI和无形.
- DFT和Raman研究确定了*OOH作为H2O2生成的关键中间体.
- 电化学和EPR结果表明,ZVI-Mn.中增强了电子传输和有益的氧空缺缺陷.
- 同时在现场生成H2O2和通过pH调节消除恩罗夫洛克萨.
结论:
- ZVI-Mn核心链是高效的催化剂,可以在现场产生H2O2.
- 催化剂的结构和特性,包括氧气空缺,增强了其催化活性.
- ZVI-Mn为水处理应用提供了一个有前途的双重功能材料.
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