Fe3O4@ Cu/C and Fe3O4@ CuO Composites Derived from Magnetic Metal–Organic Frameworks Fe3O4@ HKUST-1 with Improved Peroxidase-Like Catalytic Activity

References

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394Fe3O4@ Cu/C and Fe3O4@ CuO Composites Derived from Magnetic Metal–Organic Frameworks Fe3O4@ HKUST-1 with Improved Peroxidase-Like Catalytic Activityhttps://doi.org/10.1007/s10562-019-02964-8CompositeFe3O4@Cu/C and Fe3O4@CuO Composites Derived from Magnetic Metal–Organic Frameworks Fe3O4@HKUST‑1

Materials

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394Fe3O4@Cu/CnmTEMHowever, calcination at a higher temperature and a long time caused serious collapse of the structure, leading to the disappearance of original morphology. It can be found that Fe3O4@CuO composites fail to inherit the original octahedral structure and present nearly spherical (Fig. 3a, c). From TEM image (Fig. 3e, f), the constructions of Fe3O4@HKUST-1 composites are shrunk in certain degree and the sizes are reduced, whether the composites were calcined in N2 or air atmosphere.112.1
394Fe3O4@CuOnmTEMHowever, calcination at a higher temperature and a long time caused serious collapse of the structure, leading to the disappearance of original morphology. It can be found that Fe3O4@CuO composites fail to inherit the original octahedral structure and present nearly spherical (Fig. 3a, c). From TEM image (Fig. 3e, f), the constructions of Fe3O4@HKUST-1 composites are shrunk in certain degree and the sizes are reduced, whether the composites were calcined in N2 or air atmosphere.45.8

Kinetics

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394Fe3O4@Cu/CPODH2O24.0450.027mM6.61-8M/s394394
394Fe3O4@CuOPODH2O24.0450.094mM2.97M/s394
394Fe3O4@CuOPODTMB4.0451.97mM13.77M/s394
394Fe3O4@Cu/CPODTMB4.0451.87mM13.54-7M/s394

Applications

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394Fe3O4@Cu/CTo evaluate the peroxidase catalytic performance of Fe3O4@Cu/C and Fe3O4@CuO composites, catalytic experiments were performed toward the oxidative degradation of model organic dyes (MB)
394Fe3O4@CuOTo evaluate the peroxidase catalytic performance of Fe3O4@Cu/C and Fe3O4@CuO composites, catalytic experiments were performed toward the oxidative degradation of model organic dyes (MB)