Pt deposited on magnetic CoFe2O4 nanoparticles: Double enzyme-like activity, catalytic mechanism and fast colorimetric sensing of dopamine

References

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title
DOI
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828Pt deposited on magnetic CoFe2O4 nanoparticles: Double enzyme-like activity, catalytic mechanism and fast colorimetric sensing of dopaminehttps://doi.org/10.1016/j.microc.2020.105264CompositePt deposited on magnetic CoFe2O4 nanoparticles (Pt/CoFe2O4)

Materials

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material
size
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size type
size comment
BET
b nanozyme
b 10n
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specific act
sa 10n
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828Pt/CoFe2O434nmTEMAs can be seen from Fig. 3a, Pt/CoFe2O4 nanospheres with 34 nm in dimeter, which are composed of much smaller nanoparticles with size of 4.5 nm.

Kinetics

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substrate
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T
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vmax
vmax err
vmax 10n
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kcat
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828Pt/CoFe2O4PODTMB4.0250.16mM16.23-8M/s828
828Pt/CoFe2O4PODH2O24.0250.99mM1.19-8M/s828

Applications

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method
linear range
linear ran unit
LOD
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828Pt/CoFe2O4Detection of H2O2 and DADopamine (DA)Color20–80μM0.42μM95.5%-101.5%
828Pt/CoFe2O4Detection of H2O2 and DAH2O2Color0.1-0.9mM0.076mM