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Peroxymonosulfate Activation on a Hybrid Material of Conjugated PVC and TiO2 Nanotubes for Enhancing Degradation of Rhodamine B under Visible Light
Advances in Polymer Technology ( IF 3.1 ) Pub Date : 2020-11-25 , DOI: 10.1155/2020/8888767
La Phan Phuong Ha 1, 2 , Tran Hong Huy 1, 2 , Pham Huu Huan 1, 2 , Nguyen Thi Minh Thu 1, 2 , Cao Minh Thi 3 , Pham Van Viet 1, 2
Affiliation  

Visible-light-driven photocatalysis is a robust technology for amending the negative effect of pollutants on the environment with a minimum energy use. Herein, we describe a simple approach to producing such a photocatalyst by coupling conjugated polyvinyl chloride (cPVC) with the TiO2 nanotube (TNT) thermolysis method. By activating peroxymonosulfate (PMS) to make a cPVC/TNT/PMS system using visible light as the source, we obtain a significant enhancement in the photocatalytic performance. We show that PMS use at a concentration of 3 mM can fully degrade rhodamine B (RhB) solution at a remarkably high concentration (200 mg L-1) just in 120 min under visible light. The cPVC/TNT/PMS system also shows excellent stability in recycling tests for at least five times. Further, by confining the active species in photocatalytic reactions, we report a thorough understanding of the extent of involvement from those radicals. Our work presents a robust approach to make a high-performance, visible-light-driven photocatalyst, which can be potentially used in practice.

中文翻译:

共轭 PVC 和 TiO2 纳米管混合材料的过硫酸盐活化在可见光下增强罗丹明 B 的降解

可见光驱动的光催化是一种强大的技术,可以以最少的能源使用来修正污染物对环境的负面影响。在此,我们描述了一种通过将共轭聚氯乙烯 (cPVC) 与 TiO2 纳米管 (TNT) 热解方法耦合来生产这种光催化剂的简单方法。通过活化过一硫酸盐 (PMS) 以制造使用可见光作为光源的 cPVC/TNT/PMS 系统,我们获得了光催化性能的显着提高。我们表明,使用浓度为 3 mM 的 PMS 可以在可见光下仅在 120 分钟内以非常高的浓度(200 mg L-1)完全降解罗丹明 B (RhB) 溶液。cPVC/TNT/PMS 系统在至少五次的回收测试中也表现出出色的稳定性。此外,通过限制光催化反应中的活性物种,我们报告对这些激进分子的参与程度有透彻的了解。我们的工作提供了一种强大的方法来制造高性能、可见光驱动的光催化剂,该催化剂可能会在实践中使用。
更新日期:2020-11-25
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