MOF-derived porous ZnO-Co3O4 nanocages as peroxidase mimics for colorimetric detection of copper(ii) ions in serum†

References

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787MOF-derived porous ZnO-Co3O4 nanocages as peroxidase mimics for colorimetric detection of copper(ii) ions in serum†https://doi.org/10.1039/D0AN01383HMetal oxideporous bimetallic transition metal oxide nanocages (ZnO-Co3O4 NCs)

Materials

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BET
b nanozyme
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787ZnCo-ZIF230nmSEMAs shown in Fig. S1,† the synthesized ZnCo-ZIF nanocrystals were monodispersed with an average diameter of about 230 nm.

Kinetics

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787ZnO-Co3O4PODTMB4.5RT0.164mM4.85-8M/s787
787ZnO-Co3O4PODH2O24.5RT1.26mM2.13-8M/s787

Applications

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787ZnO-Co3O4colorimetric detection of copper(ii) ions in serumcopper(ii)Color2-100nM1.08nMAs shown in Fig. S8,† the activity of our system kept over 90% after three recycles and only a minimal loss in the activity (<15%) was observed even after five recycles.