Callaghan Innovation Research Papers

Back to Research Papers

TitleUltrafast growth of highly branched palladium nanostructures for catalysis
Publication TypeJournal Article
Year of Publication2010
AuthorsWatt, J., Cheong S., Toney M.F., Ingham B., Cookson J., Bishop P.T., and Tilley R.D.
JournalACS Nano
Pagination396 - 402
Date Published2010
ISSN19360851 (ISSN)
KeywordsAssociation reactions, Branched nanostructures, catalysis, Catalysts, Catalytic activity, Chemical synthesis, Complex nanoparticles, Diffraction, Exhaust emission, Face-centered cubic, FCC metals, Growth kinetics, Nanocrystals, Nanoparticles, Organic stabilizers, Palladium, Palladium catalyst, Reaction kinetics, Room temperature, Solution phase, Structural evolution, Synthesis (chemical), Ultra-fast, X ray diffraction
AbstractPalladium is widely used as a catalyst in pharmaceutical and chemical syntheses as well as in the reduction of harmful exhaust emissions. Therefore, the development of high performance palladium catalysts is an area of major concern. In this paper, we present the synthesis of highly branched palladium nanostructures in a simple solution phase reaction at room temperature. By varying the nature of the organic stabilizer system we demonstrate control over the reaction kinetics and hence the shape of the nanostructures. Investigations into the structural evolution of the nanostructures show that they form from multiply twinned face centered cubic (fcc) nanoparticle nuclei. Reaction kinetics then determine the resulting shape where ultrafast growth is shown to lead to the highly branched nanostructures. These results will contribute greatly to the understanding of complex nanoparticle growth from all fcc metals. The nanostructures then show excellent catalytic activity for the hydrogenation of nitrobenzene to aniline. © 2010 American Chemical Society.

Back to top