In:
Angewandte Chemie, Wiley, Vol. 136, No. 12 ( 2024-03-18)
Abstract:
Singlet oxygen ( 1 O 2 ) plays a significant role in environmental and biomedical disinfection fields. Electrocatalytic processes hold great potential for 1 O 2 generation, but remain challenging. Herein, a facile Ni doping converted spin‐state transition approach is reported for boosting 1 O 2 production. Magnetic analysis and theoretical calculations reveal that Ni occupied at the octahedral site of Co 3 O 4 can effectively induce a low‐to‐high spin‐state transition. The high‐spin Ni−Co 3 O 4 generate appropriate binding strength and enhance electron transfer between the Co centers with oxygen intermediates, thereby improving the catalytic activity of Ni−Co 3 O 4 for effective generating 1 O 2 . In neutral conditions, 1×10 6 CFU mL −1 Gram‐negative ESBL‐producing Escherichia coli ( E. coli ) could be inactivated by Ni−Co 3 O 4 system within 5 min. Further antibacterial mechanisms indicate that 1 O 2 can lead to cell membrane damage and DNA degradation so as to irreversible cell death. Additionally, the developed Ni−Co 3 O 4 system can effectively inactivate bacteria from wastewater and bioaerosols. This work provides an effective strategy for designing high‐spin electrocatalysis to boost 1 O 2 generation for disinfection process.
Type of Medium:
Online Resource
ISSN:
0044-8249
,
1521-3757
DOI:
10.1002/ange.v136.12
DOI:
10.1002/ange.202318924
Language:
English
Publisher:
Wiley
Publication Date:
2024
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