O<sub>v</sub>-rich γ-MnO<sub>2</sub> enhanced electrocatalytic three-electron oxygen reduction to hydroxyl radicals for sterilization in neutral media

doi:10.1039/d4nh00289j

	O_v-rich γ-MnO₂ enhanced electrocatalytic three-electron oxygen reduction to hydroxyl radicals for sterilization in neutral media
	Qin, Yingnan 1; Han, Tongzhu 2; Chen, Ligang 3; Yan, Kexin 4; Wang, Jing 5; Wang, Ning 1; Hou, Baorong 1
	2024-08-28
发表期刊	NANOSCALE HORIZONS
ISSN	2055-6756
页码	8
通讯作者	Chen, Ligang([email protected]) ; Wang, Ning([email protected])
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.
DOI	10.1039/d4nh00289j
收录类别	SCI
语种	英语
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
WOS类目	Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS记录号	WOS:001304057100001
出版者	ROYAL SOC CHEMISTRY
WOS关键词	PERFORMANCE ; GENERATION ; COMPOSITE ; CATALYST ; CATHODE
引用统计
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/198210
专题	海洋环境腐蚀与生物污损重点实验室
通讯作者	Chen, Ligang; Wang, Ning
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Adv Marine Mat, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China 2.Minist Nat Resources, Inst Oceanog 1, Marine Bioresource & Environm Res Ctr, Key Lab Marine Ecoenvironm Sci & Technol, Qingdao 266061, Peoples R China 3.State Power Investment Corp Hydrogen Energy Co Ltd, Beijing 102600, Peoples R China 4.Qingdao Univ Sci & Technol, Coll Environm & Safety Engn, Qingdao 266042, Peoples R China 5.Qingdao Univ Sci & Technol, Coll Chem Engn, Qingdao 266042, Peoples R China
推荐引用方式 GB/T 7714	Qin, Yingnan,Han, Tongzhu,Chen, Ligang,et al. O_v-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).O_v-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."O_v-rich γ-MnO₂ enhanced electrocatalytic three-electron oxygen reduction to hydroxyl radicals for sterilization in neutral media".NANOSCALE HORIZONS (2024):8.