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Cu2O nanocubes–grafted highly dense Au nanoparticles with modulated electronic structures for improving peroxidase catalytic performances

References

ref title DOI material type comment
3939 753 Cu2O nanocubes–grafted highly dense Au nanoparticles with modulated electronic structures for improving peroxidase catalytic performances https://doi.org/10.1016/j.talanta.2020.121990 Composite Au/Cu2O heterostructures

Materials

ref material size size err size unit size type size comment BET b nanozyme b 10n b unit specific act sa 10n sa unit comment
7964 753 Au/Cu2O 800 nm SEM It can be seen that the Cu2O NMs are made up of numerous regular and well–defined cube–like structures with average size of about 800 nm.

Kinetics

ref material enzyme type substrate pH T km km err km 10n km unit vmax vmax err vmax 10n vmax unit kcat kcat err kcat 10n kcat unit kcat/km kcat/km 10n kcat/km unit comment
6666 753 Cu2O POD H2O2 20.38 mM 8.38 -8 M/s 753
6665 753 Cu2O POD TMB 0.9 mM 10.17 -8 M/s 753
6664 753 Au/Cu2O POD H2O2 10.05 mM 6.68 -8 M/s 753
6663 753 Au/Cu2O POD TMB 0.21 mM 6.08 -8 M/s 753

Applications

ref material application target method linear range linear ran unit LOD lod unit recovery comment
5682 753 Au/Cu2O Therefore, it is vital important to explore a fast, sensitive method to accurate determination of H2O2 in the biological environment. On the basis of high peroxidase activity of Au/Cu2O nanocatalyst, a simple and flexible colorimetric sensor was constructed to detect H2O2 in this work. H2O2 Color 0.1-200 μM 0.054 μM
5681 753 Au/Cu2O In this work, we assessed the antioxidant behavior of three natural antioxidants (TA1, GA, TA2) on TMB oxidation catalyzed by Au/Cu2O heterostructures in the presence of H2O2 via colorimetric method tartaric acid Color 0-100 μM 1.55 μM
5680 753 Au/Cu2O In this work, we assessed the antioxidant behavior of three natural antioxidants (TA1, GA, TA2) on TMB oxidation catalyzed by Au/Cu2O heterostructures in the presence of H2O2 via colorimetric method gallic acid Color 0-75 μM 0.16 μM
5679 753 Au/Cu2O In this work, we assessed the antioxidant behavior of three natural antioxidants (TA1, GA, TA2) on TMB oxidation catalyzed by Au/Cu2O heterostructures in the presence of H2O2 via colorimetric method tannic acid Color 0-16 μM 0.039 μM


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