Pt nanoparticle-coupled WO2.72 nanoplates as multi-enzyme mimetics for colorimetric detection and radical elimination

References

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745Pt nanoparticle-coupled WO2.72 nanoplates as multi-enzyme mimetics for colorimetric detection and radical eliminationhttps://doi.org/10.1007/s00216-019-02268-1Compositecoupling Pt nanoparticles with WO2.72 (Pt/WO2.72)

Materials

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BET
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745Pt/WO2.72TEMThe height and width of the as-formed WO2.72 nanoplates were 10–25 nm and 20–50 nm, respectively. The Pt nanoparticle surfaces were predominantly spherical, with average sizes of 10–15 nm. The high-resolution TEM (HRTEM) image in Fig. 1c revealed distinct lattice fringes of 0.317 nm, 0.378 nm, and 0.294 nm, corresponding to the (010), (004), and (402) lattice planes of WO2.72 nanoplates, respectively. Distinct lattice fringes of 0.226 nm and 0.196 nm corresponded to the (111) and (200) lattice planes of Pt nanoparticles, respectively.

Kinetics

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745Pt/WO2.72PODH2O28.45mM745
745Pt/WO2.72PODTMB0.105mM745

Applications

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745Pt/WO2.72radical elimination
745Pt/WO2.72glucose detectionglucoseColor0.01-0.6mM5.9μM
745Pt/WO2.72H2O2 detectionH2O2Color0.005-12mM2.33μM