Nanozyme-Modified Metal–Organic Frameworks with Multienzymes Activity as Biomimetic Catalysts and Electrocatalytic Interfaces

References

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179Nanozyme-Modified Metal–Organic Frameworks with Multienzymes Activity as Biomimetic Catalysts and Electrocatalytic Interfaceshttps://doi.org/10.1021/acsami.9b23147MOFultrasmall Pt nanoparticles (Pt NPs) were loaded on the surface of PMOF(Fe) to form Pt@PMOF(Fe)

Materials

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179PMOF(Fe)300nmSEMThe low-magnification SEM images revealed that PMOF(Fe) was of uniform ellipsoidal shape with an average diameter of 300 nm (Figure 1A). TEM images in Figure 1B further show the morphology and size of PMOF(Fe), which was consistent with the result of SEM. After modifying the Pt NPs on the surface of PMOF(Fe), Pt@PMOF(Fe) kept the morphology of PMOF(Fe) (Figure 1C) and with a lot of Pt NPs. The size of Pt NPs is around 2 nm (Figure 1D, inset). These Pt NPs were modified on the surface of PMOF(Fe) uniformly.

Kinetics

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179Pt@PMOF (Fe)PODOPD0.886mM179179
179PMOF(Fe)PODOPD7.81mM179179

Applications

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179Pt@PMOF (Fe)H2O2 sensor without adding redox mediatorsWhen applied in electrocatalysis, due to the synergy between PMOF(Fe) and Pt NPs, the Pt@PMOF(Fe) modified electrode offers high activities toward to the reduction of H2O2, which could be used for H2O2 sensor without adding redox mediators.
179Pt@PMOF (Fe)afford ORR in PBSFurthermore, the Pt NPs with porphyrin in PMOF(Fe) could afford ORR in PBS, which has the potential for fuel cells and biofuel cells, especially in cancer diagnosis.
179Pt@PMOF (Fe)afford ORR in PBS
179Pt@PMOF (Fe)H2O2 sensor without adding redox mediators