articleEnvironmental Science & TechnologyMay 31, 2022Closed access

Ultrahigh Peroxymonosulfate Utilization Efficiency over CuO Nanosheets via Heterogeneous Cu(III) Formation and Preferential Electron Transfer during Degradation of Phenols

YWYan WeiJMJie MiaoJGJianxin GeJLJunyu LangCYChunyang Yu

Shanghai Jiao Tong University · ShanghaiTech University · +1 more institution

PubMed
Indexed incrossrefpubmed

Abstract

In persulfate activation by copper-based catalysts, high-valent copper (Cu(III)) is an overlooked reactive intermediate that contributes to efficient persulfate utilization and organic pollutant removal. However, the mechanisms underlying heterogeneous activation and enhanced persulfate utilization are not fully understood. Here, copper oxide (CuO) nanosheets (synthesized with a facile precipitation method) exhibited high catalytic activity for peroxymonosulfate (PMS) activation with 100% 4-chlorophenol (4-CP) degradation within 3 min. Evidence for the critical role of surface-associated Cu(III) on PMS activation and 4-CP degradation over a wide pH range (pH 3–10) was obtained using in situ Raman spectroscopy,…

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289
total citations
FWCI
21.07
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100%
References
63
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Authors

8

Topics & keywords

Topics
Keywords
  • Persulfate
  • Chemistry
  • Catalysis
  • Electron paramagnetic resonance
  • Copper
  • Degradation (telecommunications)
  • Electron transfer
  • Inorganic chemistry
UN Sustainable Development Goals
  • Clean water and sanitation
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