Ginkgo biloba leaf polysaccharide stabilized palladium nanoparticles with enhanced peroxidase-like property for the colorimetric detection of glucose

References

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599Ginkgo biloba leaf polysaccharide stabilized palladium nanoparticles with enhanced peroxidase-like property for the colorimetric detection of glucosehttps://doi.org/10.1039/D0RA00680GCompositeGinkgo biloba leaf polysaccharide (GBLP) stabilized palladium nanoparticles (Pdn-GBLP NPs)

Materials

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599Pdn-GBLP NPsTEMThe sizes of Pd NPs inside of Pdn-GBLP NPs were investigated by TEM. Fig. 2 showed Pd NPs are spherical and monodisperse. The calculated average diameter of Pd NPs was 7.61 ± 1.74 nm for Pd41-GBLP; 9.62 ± 2.53 nm for Pd68-GBLP; 11.10 ± 2.76 nm for Pd91-GBLP and 13.13 ± 2.64 nm for Pd137-GBLP, respectively. The hydrodynamic size and zeta potential of Pdn-GBLP NPs were measured using DLS technology. As shown in Fig. 5a, the hydrodynamic size of Pd41-GBLP NPs was 21.4 nm for Pd41-GBLP NPs; 22.1 nm for Pd68-GBLP NPs; 23.1 nm for Pd91-GBLP NPs and 25.9 nm for Pd137-GBLP NPs.

Kinetics

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599Pd91-GBLPPODH2O210.75mM4.93-8M/s599599
599Pd91-GBLPPODTMB2.43mM22.6-8M/s599599

Applications

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599Pd91-GBLP NPsthe colorimetric detection of glucoseglucoseColor2.5-700μM1μM