Journal article
Dual Photolytic Pathways in an Alloyed Plasmonic Near-Perfect Absorber: Implications for Photoelectrocatalysis
Q Xiao, C Kinnear, TU Connell, MK Kashif, CD Easton, A Seeber, L Bourgeois, GO Bonin, NW Duffy, ASR Chesman, DE Gómez
ACS Applied Nano Materials | AMER CHEMICAL SOC | Published : 2021
Abstract
Plasmonic noble metal nanoparticles exhibit intense interactions with light but are inherently chemically unreactive. Alloying plasmonic gold with catalytic palladium forms a hybrid catalyst incorporating each metal's benefits. In this work we demonstrate a robust method for preparing alloyed nanoparticles without the need for colloidal synthesis or time-consuming lithography. This method results in uniform, densely packed monolayers of alloyed AuPd nanoparticles suitable for inclusion in electromagnetic perfect absorbers, which further strengthen existing light-matter interactions. While these materials demonstrate a strong photocathodic response not possible using monometallic Au nanoparti..
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Awarded by Ontario Centres of Excellence
Funding Acknowledgements
This work was performed in part at the Melbourne Centre for Nanofabrication (MCN) in the Victorian Node of the Australian National Fabrication Facility (ANFF). This research was undertaken on the X-ray absorption spectroscopy beamline at the Australian Synchrotron, part of the Australian Nuclear Science and Technology Organization (ANSTO). Q.X., K.K., and C.K. were supported by OCE Fellowships from CSIRO. D.E.G. acknowledges the Australian Research Council (ARC) for support through a Future Fellowship (FT140100514). The authors acknowledge the use of instruments and scientific and technical assistance of the Monash Centre for Electron Microscopy, Monash University, the Victorian Node of Microscopy Australia. This research used equipment funded by Australian Research Council grant LE0454166.