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.

中文翻译：

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FeOCl在可见光增强催化氧化作用下活化过碳酸钠的机理

本文展示了FeOCl在可见光（FeOCl / SPC / Vis）催化下的过碳酸钠（SPC）的应用。使用罗丹明B（RhB）作为模拟污染物，彻底研究了反应动力学，降解机理和催化剂稳定性。实验结果表明，由于可见光的参与，RhB的降解率增加。用XPS表征了反应前后FeOCl催化剂中铁物种的化合价变化。发现在可见光下可以加速铁的氧化还原循环。这会激活SPC有效地产生自由基。