Controlled growth of platinum nanoparticles on strontium titanate nanocubes by atomic layer deposition

Steven T. Christensen; Jeffrey W. Elam; Federico A. Rabuffetti; Qing Ma; Steven J. Weigand; Byeongdu Lee; Soenke Seifert; Peter C. Stair; Kenneth R. Poeppelmeier; Mark C. Hersam; Michael J. Bedzyk

doi:10.1002/smll.200801920

Controlled growth of platinum nanoparticles on strontium titanate nanocubes by atomic layer deposition

Steven T. Christensen, Jeffrey W. Elam, Federico A. Rabuffetti, Qing Ma, Steven J. Weigand, Byeongdu Lee, Soenke Seifert, Peter C. Stair, Kenneth R. Poeppelmeier, Mark C. Hersam, Michael J. Bedzyk

Research output: Contribution to journal › Article › peer-review

151 Scopus citations

Abstract

With an eye toward using surface morphology to enhance heterogeneous catalysis, Pt nanoparticles are grown by atomic layer deposition (ALD) on the surfaces of SrTiO₃ nanocubes. The size, dispersion, and chemical state of the Pt nanoparticles are controlled by the number of ALD growth cycles. The SrTiO₃ nanocubes average 60 nm on a side with {001} faces. The Pt loading increases linearly with PtALD cycles to a value of 1.1 × 10^-6 g cm^-2 after five cycles. Scanning electron microscopy images reveal discrete, welldispersed Pt nanoparticles. Small- and wide-angle X-ray scattering show that the Pt nanoparticle spacing and size increase as the number of ALD cycles increases. X-ray absorption spectroscopy shows a progression from platinum(II) oxide to metallic platinum and a decrease in Pt-O bonding with an increase in Pt-Pt bonding as the number of ALD cycles increases.

Original language	English (US)
Pages (from-to)	750-757
Number of pages	8
Journal	Small
Volume	5
Issue number	6
DOIs	https://doi.org/10.1002/smll.200801920
State	Published - Mar 20 2009

Keywords

Atomic layer deposition
Nanoparticles
Platinum
Strontium titan ate
X-ray analysis

ASJC Scopus subject areas

Biotechnology
Biomaterials
Chemistry(all)
Materials Science(all)

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10.1002/smll.200801920

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title = "Controlled growth of platinum nanoparticles on strontium titanate nanocubes by atomic layer deposition",

abstract = "With an eye toward using surface morphology to enhance heterogeneous catalysis, Pt nanoparticles are grown by atomic layer deposition (ALD) on the surfaces of SrTiO3 nanocubes. The size, dispersion, and chemical state of the Pt nanoparticles are controlled by the number of ALD growth cycles. The SrTiO3 nanocubes average 60 nm on a side with {001} faces. The Pt loading increases linearly with PtALD cycles to a value of 1.1 × 10-6 g cm-2 after five cycles. Scanning electron microscopy images reveal discrete, welldispersed Pt nanoparticles. Small- and wide-angle X-ray scattering show that the Pt nanoparticle spacing and size increase as the number of ALD cycles increases. X-ray absorption spectroscopy shows a progression from platinum(II) oxide to metallic platinum and a decrease in Pt-O bonding with an increase in Pt-Pt bonding as the number of ALD cycles increases.",

keywords = "Atomic layer deposition, Nanoparticles, Platinum, Strontium titan ate, X-ray analysis",

author = "Christensen, {Steven T.} and Elam, {Jeffrey W.} and Rabuffetti, {Federico A.} and Qing Ma and Weigand, {Steven J.} and Byeongdu Lee and Soenke Seifert and Stair, {Peter C.} and Poeppelmeier, {Kenneth R.} and Hersam, {Mark C.} and Bedzyk, {Michael J.}",

year = "2009",

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doi = "10.1002/smll.200801920",

language = "English (US)",

volume = "5",

pages = "750--757",

journal = "Small",

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T1 - Controlled growth of platinum nanoparticles on strontium titanate nanocubes by atomic layer deposition

AU - Christensen, Steven T.

AU - Elam, Jeffrey W.

AU - Rabuffetti, Federico A.

AU - Ma, Qing

AU - Weigand, Steven J.

AU - Lee, Byeongdu

AU - Seifert, Soenke

AU - Stair, Peter C.

AU - Poeppelmeier, Kenneth R.

AU - Hersam, Mark C.

AU - Bedzyk, Michael J.

PY - 2009/3/20

Y1 - 2009/3/20

N2 - With an eye toward using surface morphology to enhance heterogeneous catalysis, Pt nanoparticles are grown by atomic layer deposition (ALD) on the surfaces of SrTiO3 nanocubes. The size, dispersion, and chemical state of the Pt nanoparticles are controlled by the number of ALD growth cycles. The SrTiO3 nanocubes average 60 nm on a side with {001} faces. The Pt loading increases linearly with PtALD cycles to a value of 1.1 × 10-6 g cm-2 after five cycles. Scanning electron microscopy images reveal discrete, welldispersed Pt nanoparticles. Small- and wide-angle X-ray scattering show that the Pt nanoparticle spacing and size increase as the number of ALD cycles increases. X-ray absorption spectroscopy shows a progression from platinum(II) oxide to metallic platinum and a decrease in Pt-O bonding with an increase in Pt-Pt bonding as the number of ALD cycles increases.

AB - With an eye toward using surface morphology to enhance heterogeneous catalysis, Pt nanoparticles are grown by atomic layer deposition (ALD) on the surfaces of SrTiO3 nanocubes. The size, dispersion, and chemical state of the Pt nanoparticles are controlled by the number of ALD growth cycles. The SrTiO3 nanocubes average 60 nm on a side with {001} faces. The Pt loading increases linearly with PtALD cycles to a value of 1.1 × 10-6 g cm-2 after five cycles. Scanning electron microscopy images reveal discrete, welldispersed Pt nanoparticles. Small- and wide-angle X-ray scattering show that the Pt nanoparticle spacing and size increase as the number of ALD cycles increases. X-ray absorption spectroscopy shows a progression from platinum(II) oxide to metallic platinum and a decrease in Pt-O bonding with an increase in Pt-Pt bonding as the number of ALD cycles increases.

KW - Atomic layer deposition

KW - Nanoparticles

KW - Platinum

KW - Strontium titan ate

KW - X-ray analysis

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DO - 10.1002/smll.200801920

M3 - Article

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EP - 757

JO - Small

JF - Small

IS - 6

ER -

Controlled growth of platinum nanoparticles on strontium titanate nanocubes by atomic layer deposition

Abstract

Keywords

ASJC Scopus subject areas

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