Regulating oxygen activation and catalytic kinetics in ZnCo 2 O 4 nanozymes via Mn substitution: insights into the oxidase-like activity mechanism

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Abstract
Mn substitution in ZnCo 2 O 4 tuned redox properties and enhanced oxidase-like activity. Mn–O–Co centers promoted O 2 activation and electron transfer. A colorimetric platform reliably detected ascorbic acid in juice, proving cation tuning for nanozymes.
Funding Information
  • National Foundation for Science and Technology Development (103.02-2025.16)

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