Synthesis and catalytic properties of highly branched palladium nanostructures using seeded growth
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Accepted version
Date
2016-06-08
Authors
Graham, Leah
Collins, Gillian
Holmes, Justin D.
Tilley, Richard
Journal Title
Journal ISSN
Volume Title
Publisher
Royal Society of Chemistry
Published Version
Abstract
In order to develop nanocatalysts with enhanced catalytic performance, it is important to be able to synthesize nanocrystals enclosed by high-index surface facets, due to their high density of low coordinated atoms at step, ledge and kink sites. Here, we report a facile seed-mediated route to the synthesis of highly branched Pd nanostructures with a combination of {113}, {115} and {220} high-index surface planes. The size of these nanostructures is readily controlled by a simple manipulation of the seed concentration. The selective use of oleylamine and oleic acid was also found to be critical to the synthesis of these structures, with Pd icosahedra enclosed by low-index {111} facets being produced when hexadecylamine was employed as capping ligand. The structure–property relationship of these nanostructures as catalysts in Suzuki-cross coupling reactions was then investigated and compared, with the high-index faceted branched Pd nanostructures found to be the most effective catalysts.
Description
Keywords
Nanocatalysts , Nanostructures , Catalysts , Suzuki-cross coupling reactions , Pd nanostructures
Citation
Graham, L., Collins, G., Holmes, J. D. and Tilley, R. D. (2016) 'Synthesis and catalytic properties of highly branched palladium nanostructures using seeded growth', Nanoscale, 8(5), pp. 2867-2874. doi: 10.1039/c5nr07413d
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Copyright
© The Royal Society of Chemistry 2016. This document is the Author accepted version of an article published in final form in Nanoscale. To access the final published work see http://dx.doi.org/10.1039/C5NR07413D