Activation mechanism of sodium percarbonate by FeOCl under visible-light-enhanced catalytic oxidation

作者：Chen, Mengdie; Xu, Haiming; Wang, Qi; Li, Dongya^*; Xia, Dongsheng^*

来源：Chemical Physics Letters, 2018, 706: 415-420.

DOI：10.1016/j.cplett.2018.06.004

• Iron oxychloride
• Sodium percarbonate
• Fe(III)/Fe(II) redox cycle
• Photo-Fenton-like system
• Heterogenous catalysis

The application of sodium percarbonate (SPC) catalyzed by FeOCl under visible light (FeOCl/SPC/Vis), is shown in this paper. The reaction kinetics, degradation mechanism, and catalyst stability were thoroughly investigated using Rhodamine B (RhB) as a simulated pollutant. Experimental results show that the degradation rate of RhB increases due to the participation of visible light. The valence change of iron species in the FeOCl catalyst, before and after the reaction, were characterized by XPS. It is found that the redox cycle of iron species can be accelerated under visible light. This activates SPC to generate radicals, effectively.

• 出版日期2018-8-16
• 单位武汉纺织大学