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

References

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753Cu2O nanocubes–grafted highly dense Au nanoparticles with modulated electronic structures for improving peroxidase catalytic performanceshttps://doi.org/10.1016/j.talanta.2020.121990CompositeAu/Cu2O heterostructures

Materials

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753Au/Cu2O800nmSEMIt 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

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753Cu2OPODH2O220.38mM8.38-8M/s753
753Cu2OPODTMB0.9mM10.17-8M/s753
753Au/Cu2OPODH2O210.05mM6.68-8M/s753
753Au/Cu2OPODTMB0.21mM6.08-8M/s753

Applications

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753Au/Cu2OTherefore, 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.H2O2Color0.1-200μM0.054μM
753Au/Cu2OIn 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 methodtartaric acidColor0-100μM1.55μM
753Au/Cu2OIn 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 methodgallic acidColor0-75μM0.16μM
753Au/Cu2OIn 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 methodtannic acidColor0-16μM0.039μM