Core-shell Au@ Co-Fe hybrid nanoparticles as peroxidase mimetic nanozyme for antibacterial application

References

ref title DOI material type comment
3634 446 Core-shell Au@ Co-Fe hybrid nanoparticles as peroxidase mimetic nanozyme for antibacterial application https://doi.org/10.1016/j.procbio.2020.05.003 Composite Core-shell Au@Co-Fe hybrid nanoparticles

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
7683 446 Au@Co-Fe NPs 25 nm TEM The TEM image also confirmed that Au@Co-Fe NPs are spherical and about 25 nm. 253 U/mg The Au@Co-Fe NPs activity (units) calculated based on the Eq. 4:(4)bnanozyme=Vε×l×(ΔAΔt) In the Eq. 4, b nanozyme is the catalytic activity of Au@Co-Fe NPs defined in units. V is the total volume of reaction solution (μl), ε is the molar extinction coefficient (39,000 M−1 cm−1) of the oxidized TMB, at 652 nm, l is the path length of light traveling in the cuvette (cm), A is the absorbance after subtraction of the blank value and ΔA/Δt is the initial rate of change in absorbance at 652 nm min−1.
7682 446 Au 22.4 0.8 nm DLS 31 U/mg
7681 446 CoCl2 18 U/mg
7680 446 FeSO4 26 U/mg
7679 446 FeSO4+ CoCl2 30 U/mg
7678 446 Au@Co NPs 36 U/mg
7677 446 Au@Fe NPs 72 U/mg
7676 446 HRP natural 153 U/mg
7675 446 HRP natural 517 U/mg
7674 446 Au@Co-Fe NPs 53.4 1.8 nm DLS Mean diameter 87 U/mg

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
5360 446 Au@Co-Fe NPs antibacterial