A Colorimetric Aptamer Sensor Based on the Enhanced Peroxidase Activity of Functionalized Graphene/Fe3O4-AuNPs for Detection of Lead (II) Ions

References

ref title DOI material type comment
3880 694 A Colorimetric Aptamer Sensor Based on the Enhanced Peroxidase Activity of Functionalized Graphene/Fe3O4-AuNPs for Detection of Lead (II) Ions https://doi.org/10.3390/catal10060600 Composite graphene/Fe3O4-AuNPs

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
7908 694 graphene/Fe3O4-AuNP 50-70 nm TEM The prepared amine magnetic beads were characterized by TEM, FTIR, and XRD. Figure 3a is the TEM image of the amine magnetic beads. It indicates that the prepared magnetic beads have a particle size of 50 to 70 nm and good dispersibility

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
5622 694 graphene/Fe3O4-AuNP detection of Pb2+ Pb2+ Color 1–300 ng/mL 0.63 ng/mL