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

References

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

Materials

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material
size
size err
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size type
size comment
BET
b nanozyme
b 10n
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specific act
sa 10n
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1283Ag NFsTEMWith 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

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substrate
pH
T
km
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vmax
vmax err
vmax 10n
vmax unit
kcat
kcat err
kcat 10n
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kcat/km
kcat/km 10n
kcat/km unit
comment
1283Ag NFsPODH2O26369.6mM8369.4nM/s2.771/s12837M-1 s-11283
1283Ag NFsPODTMB61.1mM1715nM/s5.561/s12839M-1 s-11283

Applications

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target
method
linear range
linear ran unit
LOD
lod unit
recovery
comment
1283Ag NFsquantitative detection of ascorbic acidAscorbic acid (AA)2.0-70.0μM0.1μM