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Mechanism exploration for chlorine-mediated electrocatalytic generation of 1O2 based on the equilibrium between ClO- and HO2-
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Hao-ran SUN, Ming-ming YIN, Hai-liang TANG, Li-zhang WANG*
China Environmental Science | 2025, 45(1) : 167 - 174
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China Environmental Science | 2025, 45(1): 167-174
• Water Pollution Control •
Mechanism exploration for chlorine-mediated electrocatalytic generation of 1O2 based on the equilibrium between ClO- and HO2-
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Hao-ran SUN, Ming-ming YIN, Hai-liang TANG, Li-zhang WANG*
Affiliations
  • School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou 221116, China
Published: 2025-01-20
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Because of singlet oxygen (1O2)’s strong oxidation capability and environmental friendliness, understanding the mechanism of chlorine-mediated 1O2 generation in electrochemical processes can enhance wastewater treatment efficiency and minimize the side effects of active chlorine. Thus, electrochemical tests and treatment of Rhodamine B (RhB) simulated wastewater were used to assess the performance of Ir-Ta/Ti and Pt/Ti electrodes. The effects of different conditions (Cl- concentration, chlorine evolution activity of electrodes, H2O2 addition, O2 aeration) on electrochemical 1O2 generation were also explored. The results demonstrated that the 1O2-dominated electrochemical system can remove over 96% of RhB and shorten degradation pathways.Efficient 1O2 production depends on balancing hypochlorite (ClO-) and hydroperoxyl (HO2-) in the system, as an excess of either suppresses 1O2 generation. This study provides a theoretical framework for enhancing 1O2 generation under various conditions and the targeted preparation and modification of electrodes.

chlorine-mediated  /  electrochemical formation of 1O2  /  RhB removal  /  ClO-—HO2- balance
Hao-ran SUN, Ming-ming YIN, Hai-liang TANG, Li-zhang WANG. Mechanism exploration for chlorine-mediated electrocatalytic generation of 1O2 based on the equilibrium between ClO- and HO2-[J]. China Environmental Science, 2025 , 45 (1) : 167 -174 .
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  • Receive Date：2024-06-03
  • Online Date：2026-03-18
  • Published：2025-01-20
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  • Received：2024-06-03
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    School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou 221116, China
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表12种不同金属材料的力学参数
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Number of
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Number of
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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