可重复使用的CS-Ca@PEI/CuMnO2水凝珠,用于激活氧硫酸盐降解刚果红色
Jinyan Yang1, Zhaoxing Hu1, Wenhui Rao1
1College of Materials Science and Engineering, Guilin University of Technology (GUT), Guilin 541004, China.
Langmuir : the ACS journal of surfaces and colloids
|June 28, 2024
概括
一种新型的水凝封装双金属氧化物催化剂,CS-Ca@PEI/CuMnO2,使用过氧化硫酸盐 (PMS) 有效降解刚果红色染料. 这种稳定且可回收的催化剂显示了工业废水处理的巨大潜力.
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:
- 金属氧化物激活过氧化硫酸盐 (PMS) 进行有机染料降解.
- 在实现催化剂的高效率,稳定性和可回收性方面存在挑战.
- 开发强大的异质氧化系统对于废水处理至关重要.
研究的目的:
- 合成一种稳定,可回收的催化剂,以有效降解有机染料.
- 研究CS-Ca@PEI/CuMnO2在激活刚果红色 (CR) 降解中的PMS的催化性能.
- 探索潜在的激进机制和降解途径.
主要方法:
- 液热合成CuMnO2并将其封装成CS-Ca@PEI水凝珠.
- 在各种条件下评估CR的催化降解 (pH,催化剂剂量,PMS度,温度).
- 使用火实验,XPS和EPR进行根本性鉴定;使用LC-MS进行中间分析.
主要成果:
- 在pH 7.0下,CS-Ca@PEI/CuMnO2实现了91.0%的CR降解.
- 催化剂在三次循环后保持了86.9%的效率,证明了出色的稳定性和可回收性.
- 单片氧 (1O2) 和超氧基 (•O2−) 被确定为关键反应物种.
结论:
- 该CS-Ca@PEI/CuMnO2/PMS系统是一种高效的异质氧化过程,用于CR降解.
- 催化剂具有优越的结构耐用性,可回收性和易于回收.
- 这种催化剂对从工业废水中去除有机污染物具有显著的前景.
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