Synthesis and catalytic activity of the metastable phase of gold phosphide

Deshani Fernando, Toni A.E. Nigro, I. D. Dyer, Shaun M. Alia, Bryan S. Pivovar, Yolanda Vasquez

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Recently, transition metal phosphides have found new applications as catalysts for the hydrogen evolution reaction that has generated an impetus to synthesize these materials at the nanoscale. In this work, Au2P3 was synthesized utilizing the high temperature decomposition of tri-n-octylphosphine as a source of elemental phosphorous. Gold nanorods were used as morphological templates with the aim of controlling the shape and size of the resulting gold phosphide particles. We demonstrate that the surface capping ligand of the gold nanoparticle precursors can influence the purity and extent to which the gold phosphide phase will form. Gold nanorods functionalized with 1-dodecanethiol undergo digestive ripening to produce discrete spherical particles that exhibit reduced reactivity towards phosphorous, resulting in low yields of the gold phosphide. In contrast, gold phosphide was obtained as a phase pure product when cetyltrimethylammonium bromide functionalized gold nanorods are used instead. The Au2P3 nanoparticles exhibited higher activity than polycrystalline gold towards the hydrogen evolution reaction.

Original languageEnglish
Pages (from-to)182-192
Number of pages11
JournalJournal of Solid State Chemistry
Volume242
DOIs
StatePublished - 1 Oct 2016
Externally publishedYes

Fingerprint

phosphides
Metastable phases
Gold
catalytic activity
Catalyst activity
gold
synthesis
Nanorods
nanorods
Hydrogen
Nanoparticles
nanoparticles
hydrogen
Transition metals
bromides
purity
templates
reactivity
transition metals
Ligands

Keywords

  • Catalysis
  • Gold phosphide
  • HER
  • Nanoparticles
  • Synthesis

Cite this

Fernando, Deshani ; Nigro, Toni A.E. ; Dyer, I. D. ; Alia, Shaun M. ; Pivovar, Bryan S. ; Vasquez, Yolanda. / Synthesis and catalytic activity of the metastable phase of gold phosphide. In: Journal of Solid State Chemistry. 2016 ; Vol. 242. pp. 182-192.
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Synthesis and catalytic activity of the metastable phase of gold phosphide. / Fernando, Deshani; Nigro, Toni A.E.; Dyer, I. D.; Alia, Shaun M.; Pivovar, Bryan S.; Vasquez, Yolanda.

In: Journal of Solid State Chemistry, Vol. 242, 01.10.2016, p. 182-192.

Research output: Contribution to journalArticle

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AU - Fernando, Deshani

AU - Nigro, Toni A.E.

AU - Dyer, I. D.

AU - Alia, Shaun M.

AU - Pivovar, Bryan S.

AU - Vasquez, Yolanda

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