Histidine-directed formation of nearly monodispersed silver nanoflowers and their ultra-high peroxidase-like activity under physiological pH

References

ref title DOI material type comment
4461 1283 Histidine-directed formation of nearly monodispersed silver nanoflowers and their ultra-high peroxidase-like activity under physiological pH https://doi.org/10.1016/j.apsusc.2020.147457 metal silver nanoflowers (Ag NFs)

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
8294 1283 Ag NFs TEM With the increase of pH, the morphology of Ag NPs evolved from spherical-like to flower-like gradually (Fig. 1b-g), and average sizes and polydispersities of the resulting Ag NPs in the reaction solutions with pH 11.0, 11.2, 11.4, 11.6, 11.8 and 12.0 were determined to be 104 nm (± 4.0%), 109 nm (± 7.0%), 104 nm (± 5.8%), 104 nm (± 4.1%), 110 nm (± 5.0%) and 119 nm (± 4.1%), respectively.

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
7202 1283 Ag NFs POD H2O2 6 369.6 mM 8369.4 nM/s 2.7 7 1/s 1283 7 M-1 s-1 1283
7201 1283 Ag NFs POD TMB 6 1.1 mM 1715 nM/s 5.5 6 1/s 1283 9 M-1 s-1 1283

Applications

ref material application target method linear range linear ran unit LOD lod unit recovery comment
6144 1283 Ag NFs quantitative detection of ascorbic acid Ascorbic acid (AA) 2.0-70.0 μM 0.1 μM