Highly dispersed Pt nanoparticles on ultrasmall EMT zeolite: A peroxidase-mimic nanoenzyme for detection of H2O2 or glucose

References

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202Highly dispersed Pt nanoparticles on ultrasmall EMT zeolite: A peroxidase-mimic nanoenzyme for detection of H2O2 or glucosehttps://doi.org/10.1016/j.jcis.2020.02.118CompositeIn this work, novel Pt/EMT nanocomposites were prepared by uniformly loading Pt NPs (5–8 nm) onto the support of ultrasmall EMT zeolite (15–20 nm), a kind of low-silica microporous aluminosilicate material.

Materials

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BET
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202Pt/EMTThe EMT zeolite synthesized under mild conditions comprises a great number of uniform nanocrystals with slightly different morphology and average particle size of 15–20 nm (Fig. 2A and S2), in agreement with the result calculated by Scherrer Equation. Moreover, some highly-dispersed Pt NPs in size of 5–8 nm are confined within the zeolite (Fig. 2D)457

Kinetics

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2022.6Pt/EMTPODH2O20.58mM11.6-8M/s12.01/min202202
2022.6Pt/EMTPODTMB0.16mM4.72-8M/s17.71/min202

Applications

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2022.6Pt/EMTDetection of H2O2 and glucoseH2O2Color2.9-29.4μM1.1μM
2022.6Pt/EMTDetection of H2O2 and glucoseglucoseColor0.09-0.27mM13.2μM