AuPt Alloy Nanostructures with Tunable Composition and Enzyme-like Activities for Colorimetric Detection of Bisulfide.

ABSTRACT: Tuning the enzyme-like activity and studying the interaction between biologically relevant species and nano-enzymes may facilitate the applications of nanostructures in mimicking natural enzymes. In this work, AuPt alloy nanoparticles (NPs) with varying compositions were prepared through a facile method by co-reduction of Au³⁺ and Pt²⁺ in aqueous solutions. The composition could be tuned easily by adjusting the molar ratios of added Pt²⁺ to Au³⁺. It was found that both peroxidase-like and oxidase-like activity of AuPt alloy NPs were highly dependent on the alloy compositions, which thus suggesting an effective way to tailor their catalytic properties. By investigating the inhibitory effects of HS^- on the enzyme-like activity of AuPt al

SUBMITTER: He W 

PROVIDER: S-EPMC5209660 | biostudies-literature | 2017 Jan

REPOSITORIES: biostudies-literature