Ag@Au bimetallic nanoparticles: an easy and highly reproducible synthetic approach for photocatalysis

An Ag@Au bimetallic nanoparticle (BNP) formulation was developed in this work. The proposed formulation was developed using photochemical and chemical methods and non-toxic reagents, showing high reproducibility and homogeneity. The synthesized BNPs have an average size of 7 nm, a core-shell-like st...

Full description

Saved in:
Bibliographic Details
Published in:Nanoscale advances 2022-11, Vol.4 (22), p.4789-4797
Main Authors: Urzúa, Esteban, Gonzalez-Torres, Fernando, Beltrán, Valentina, Barrias, Pablo, Bonardd, Sebastian, Ramírez, A. M. R, Ahumada, Manuel
Format: Article
Language:English
Subjects:
Chemistry
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:An Ag@Au bimetallic nanoparticle (BNP) formulation was developed in this work. The proposed formulation was developed using photochemical and chemical methods and non-toxic reagents, showing high reproducibility and homogeneity. The synthesized BNPs have an average size of 7 nm, a core-shell-like structure (silver core and gold shell), high colloidal and long-term stability, and superior catalytic activity under darkness and white light irradiation conditions when evaluating the reduction of 4-nitrophenol to 4-aminophenolate, with respect to the monometallic Ag and Au counterparts. Furthermore, BNP concentrations as low as 2 nM were required to reach 100% conversions in less than 30 minutes. Therefore, considering future applications, the high surface-to-volume ratio of the prepared BNPs coupled with their well-defined optical properties makes them a great candidate for developing heterogeneous catalyzer materials to be applicable under sunlight as an environmentally friendly catalytic system. An Ag@Au bimetallic nanoparticle (BNP) formulation was developed in this work.
ISSN:2516-0230
2516-0230
DOI:10.1039/d2na00539e