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

References

ref title DOI material type comment
4014 828 Pt deposited on magnetic CoFe2O4 nanoparticles: Double enzyme-like activity, catalytic mechanism and fast colorimetric sensing of dopamine https://doi.org/10.1016/j.microc.2020.105264 Composite Pt deposited on magnetic CoFe2O4 nanoparticles (Pt/CoFe2O4)

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
8028 828 Pt/CoFe2O4 34 nm TEM As 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

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
6722 828 Pt/CoFe2O4 POD TMB 4.0 25 0.16 mM 16.23 -8 M/s 828
6721 828 Pt/CoFe2O4 POD H2O2 4.0 25 0.99 mM 1.19 -8 M/s 828

Applications

ref material application target method linear range linear ran unit LOD lod unit recovery comment
5754 828 Pt/CoFe2O4 Detection of H2O2 and DA Dopamine (DA) Color 20–80 μM 0.42 μM 95.5%-101.5%
5753 828 Pt/CoFe2O4 Detection of H2O2 and DA H2O2 Color 0.1-0.9 mM 0.076 mM