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

References

ref title DOI material type comment
3577 389 Colorimetric determination of Pb2+ ions based on surface leaching of Au@ Pt nanoparticles as peroxidase mimic https://doi.org/10.1007/s00604-020-04234-6 Multi-metal surface leaching ofAu@PtNP

Materials

ref material size size err size unit size type size comment BET b nanozyme b 10n b unit specific act sa 10n sa unit comment
7627 389 Au@PtNP 35.5 4.3 nm DLS We 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

ref material enzyme type substrate pH T km km err km 10n km unit vmax vmax err vmax 10n vmax unit kcat kcat err kcat 10n kcat unit kcat/km kcat/km 10n kcat/km unit comment

Applications

ref material application target method linear range linear ran unit LOD lod unit recovery comment
5299 389 Au@PtNP Although 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+ Color 20~800 nM 3.0 nM