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Issue 42, 2017, Issue in Progress

Gold coated iron phosphide core–shell structures

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Abstract

Core–shell particles Fe2P@Au have been prepared beginning with Fe2P nanorods, nanocrosses and nanobundles prepared from the solvothermal decomposition of H2Fe3(CO)93-PtBu). Iron phosphide structures can be produced from a single-source organometallic precursor with morphological control by varying the surfactant conditions to yield fiber bundles and dumbbell-shaped bundles ranging from nanometers to microns. Derivatization of the surfaces with γ-aminobutyric acid was used to attach Au nanoparticle seeds to the surface of the Fe2P nanoparticles followed by completion of the Au shell by reduction with formaldehyde or aqueous HAuCl4/CO, with the latter giving somewhat better results. Shell thickness ranged from an incomplete, partially coated Au shell to a thickness of 65 ± 21 nm by varying the amount of gold decorated precursor particles. Increasing the thicknesses of the Au shells produced a redshift in the plasmonic resonance of the resulting structures as was observed previously for FeOx@Au.

Graphical abstract: Gold coated iron phosphide core–shell structures

Supplementary files

Article information


Submitted
26 Jan 2017
Accepted
08 May 2017
First published
15 May 2017

This article is Open Access

RSC Adv., 2017,7, 25848-25854
Article type
Paper

Gold coated iron phosphide core–shell structures

A. T. Kelly, C. S. Filgueira, D. E. Schipper, N. J. Halas and K. H. Whitmire, RSC Adv., 2017, 7, 25848 DOI: 10.1039/C7RA01195D

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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