5,10,15,20-tetrakis (4-carboxylphenyl) porphyrin functionalized NiCo2S4 yolk-shell nanospheres: Excellent peroxidase-like activity, catalytic mechanism and fast cascade colorimetric biosensor for cholesterol

References

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title
DOI
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4215,10,15,20-tetrakis (4-carboxylphenyl) porphyrin functionalized NiCo2S4 yolk-shell nanospheres: Excellent peroxidase-like activity, catalytic mechanism and fast cascade colorimetric biosensor for cholesterolhttps://doi.org/10.1016/j.snb.2020.128850Composite5,10,15,20-tetrakis (4-carboxylphenyl) porphyrin functionalized NiCo2S4 yolk-shell nanospheres (Por-NiCo2S4)

Materials

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size
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size comment
BET
b nanozyme
b 10n
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421Por-NiCo2S4570nmSEMAs seen from SEM images (Fig. 3a-3c), the morphologies of both NiCo2S4 and Por-NiCo2S4 are yolk-shell nanospheres with a uniform size of ca. 570 nm18.3031

Kinetics

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vmax 10n
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kcat
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kcat/km 10n
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421Por-NiCo2S4PODH2O24.5mM4.32-8M/s421421
421Por-NiCo2S4PODTMB0.3mM34.86-8M/s421421

Applications

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linear range
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421Por-NiCo2S4detect H2O2 and cholesterol with a very low detection limitH2O2Color0.02-1.0mM10.06μM
421Por-NiCo2S4Determination of cholesterol in human serumcholesterolColor0.1-9mM19.36μM