This study investigates the generation of reactive oxidative species (ROS) at the air-water interface of microbubbles using an amphiphilic single-Co-atom catalyst (Co@SCN) and peroxymonosulfate (PMS). The Co@SCN catalyst efficiently transports PMS to the interface, triggering accelerated generation of sulfate radicals (SO₄⁻) with a 20-fold higher concentration than in the bulk solution. SO₄⁻ preferentially resides at the interface due to low free energy and hydrogen bonding with H₃O⁺, exhibiting significantly higher oxidation reactivity toward gaseous pollutants like toluene. This approach demonstrates a promising strategy for accelerating ROS-induced reactions at the air-water interface for environmental remediation.
Publisher
Nature Communications
Published On
Oct 14, 2024
Authors
Ruijie Xie, Kaiheng Guo, Yong Li, Yingguang Zhang, Huanran Zhong, Dennis Y. C. Leung, Haibao Huang
Tags
reactive oxidative species
amphiphilic catalyst
sulfate radicals
environmental remediation
peroxymonosulfate
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