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Ov-rich γ-MnO2 enhanced electrocatalytic three-electron oxygen reduction to hydroxyl radicals for sterilization in neutral media

文献类型：期刊论文

作者Qin, Yingnan5; Han, Tongzhu4; Chen, Ligang3; Yan, Kexin2; Wang, Jing1; Wang, Ning5; Hou, Baorong5
刊名NANOSCALE HORIZONS
出版日期2024-08-28
页码8
ISSN号2055-6756
DOI10.1039/d4nh00289j
通讯作者Chen, Ligang(ligangchen0310@163.com) ; Wang, Ning(wangning@qdio.ac.cn)
英文摘要Marine biofouling severely limits the development of the marine economy, and reactive oxygen species (ROS) produced by electrocatalytic antifouling techniques could inactivate marine microorganisms and inhibit the formation of marine biofouling. Compared with an electro-Fenton reaction, a three-electron oxygen reduction reaction (3e(-) ORR) could generate a hydroxyl radical ((OH)-O-center dot) in situ without the limitation of pH and iron mud pollutants. Herein, Ov-rich gamma-MnO2 is designed to enhance the 3e(-) ORR performance in neutral media and exhibits excellent sterilization performance for typical marine bacteria. DFT calculation reveals that O-v is beneficial to the "end-on" adsorption and activation of O-2, and the Mn site could accept the electrons from *OOH and promote its further reduction to form (OH)-O-center dot; O-v and Mn sites together guarantee the high 3e(-) ORR efficiency. In addition, liquid chromatography-tandem mass spectrometry (LC-MS/MS) proves the vast formation of (OH)-O-center dot in the primary reaction stage, which is the key to sterilization. This work explores the reaction mechanism of the 3e(-) ORR in neutral media and provides the possibility for the application of electrocatalysis technology in the treatment of marine biofouling pollution.
WOS关键词PERFORMANCE ; GENERATION ; COMPOSITE ; CATALYST ; CATHODE
资助项目National Natural Science Foundation of China[42006046] ; National Natural Science Foundation of China[42106051] ; National Natural Science Foundation of China[U2106206] ; Hebei Province Key Research and Development Plan[22373501D] ; China Postdoctoral Science Foundation[2023M733526]
WOS研究方向Chemistry ; Science & Technology - Other Topics ; Materials Science
语种英语
WOS记录号WOS:001304057100001
出版者ROYAL SOC CHEMISTRY
源URL[http://ir.qdio.ac.cn/handle/337002/198209]  
专题海洋研究所_海洋腐蚀与防护研究发展中心
通讯作者Chen, Ligang; Wang, Ning
作者单位1.Qingdao Univ Sci & Technol, Coll Chem Engn, Qingdao 266042, Peoples R China
2.Qingdao Univ Sci & Technol, Coll Environm & Safety Engn, Qingdao 266042, Peoples R China
3.State Power Investment Corp Hydrogen Energy Co Ltd, Beijing 102600, Peoples R China
4.Minist Nat Resources, Inst Oceanog 1, Marine Bioresource & Environm Res Ctr, Key Lab Marine Ecoenvironm Sci & Technol, Qingdao 266061, Peoples R China
5.Chinese Acad Sci, Inst Oceanol, Key Lab Adv Marine Mat, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China
推荐引用方式
GB/T 7714		 Qin, Yingnan,Han, Tongzhu,Chen, Ligang,et al. Ov-rich γ-MnO2 enhanced electrocatalytic three-electron oxygen reduction to hydroxyl radicals for sterilization in neutral media[J]. NANOSCALE HORIZONS,2024:8.
APA Qin, Yingnan.,Han, Tongzhu.,Chen, Ligang.,Yan, Kexin.,Wang, Jing.,...&Hou, Baorong.(2024).Ov-rich γ-MnO2 enhanced electrocatalytic three-electron oxygen reduction to hydroxyl radicals for sterilization in neutral media.NANOSCALE HORIZONS,8.
MLA Qin, Yingnan,et al."Ov-rich γ-MnO2 enhanced electrocatalytic three-electron oxygen reduction to hydroxyl radicals for sterilization in neutral media".NANOSCALE HORIZONS (2024):8.

入库方式： OAI收割

来源：海洋研究所

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