articleEnvironmental Science & TechnologyApr 20, 2022Closed access

Nitrogen Vacancy-Modulated Peroxymonosulfate Nonradical Activation for Organic Contaminant Removal via High-Valent Cobalt-Oxo Species

JJJingjing JiangZZZiqing ZhaoJGJiaying GaoTLTian‐Ren LiMLMingyu Li

Jilin University · Northeast Normal University

PubMed
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Abstract

Rapid generation of high-valent cobalt-oxo species (Co(IV)═O) for the removal of organic contaminants has been challenging because of the low conversion efficiency of Co(III)/Co(II) and the high activation energy barrier of the Co(II)-oxidant complex. Herein, we introduced nitrogen (N) vacancies into graphite carbon nitride imbedded with cobalt carbonate (CCH/CN–Vn) in a peroxymonosulfate (PMS)/visible light system to break the limitations of a conventional two-electron transfer path. These N vacancies enhanced the electron distribution of the Co 3d orbital and lowered the energy barrier to cleave the O–O bond of PMS in the Co(II)-PMS complex, achieving the modulation of major active species from 1O2 to…

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286
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21.65
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100%
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Authors

7

Topics & keywords

Topics
Keywords
  • Chemistry
  • Cobalt
  • Adsorption
  • Aqueous solution
  • Electron transfer
  • Bond cleavage
  • Inorganic chemistry
  • Nitrogen
UN Sustainable Development Goals
  • Clean water and sanitation
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