Colorimetric determination of Pb2+ ions based on surface leaching of Au@ Pt nanoparticles as peroxidase mimic

References

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389Colorimetric determination of Pb2+ ions based on surface leaching of Au@ Pt nanoparticles as peroxidase mimichttps://doi.org/10.1007/s00604-020-04234-6Multi-metalsurface leaching ofAu@PtNP

Materials

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BET
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389Au@PtNP35.54.3nmDLSWe found that the ions (1.0 μM) induced the slight aggregation of the Au@PtNPs, which was demonstrated by the average hydrate size change of the Au@PtNPs from 35.5 ± 4.3 to 75.0 ± 5.5 nm in Fig. 3

Kinetics

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Applications

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389Au@PtNPAlthough these methods demonstrated advantages such as low cost and high selectiveness, the sensitivity needed to be improved further. In this work, we combined this Pb2+-S2O3 2−-based metal leaching with Au@PtNP nanozyme together to fabricate a new colorimetric determination of Pb2+.pb2+Color20~800nM3.0nM