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. 2021 Dec 31;12(1):145. doi: 10.3390/nano12010145

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© 2021 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Peroxidase activity of Au clusters. (A) Structural changes of TMB after catalytic oxidation. (B) The color changes of TMB (1 mM) mixed with H₂O₂ (100 mM) and different concentrations of Au clusters. (C) TMB absorbance value change at 652 nm after mixture with H₂O₂ (100 mM) and different concentrations of Au clusters.