Propane oxidation over Pt/SrTiO3 nanocuboids

James A. Enterkin, Worajit Setthapun, Jeffrey W. Elam, Steven T. Christensen, Federico A. Rabuffetti, Laurence D. Marks, Peter C Stair, Kenneth R Poeppelmeier, Christopher L. Marshall

Research output: Contribution to journalArticle

102 Citations (Scopus)

Abstract

Pt/SrTiO3 shows promise as a low temperature hydrocarbon combustion catalyst for automotive applications. In this study, SrTiO 3 nanocuboid supports were synthesized using sol-precipitation coupled with hydrothermal synthesis, and platinum was deposited on the nanocuboids with 1, 3, and 5 cycles of atomic layer deposition (ALD). The platinum particles have a highly uniform distribution both before and after reaction testing, and range from 1 to 5 nm in size, depending upon the number of ALD cycles. These materials have a >50 °C lower light-off temperature for propane oxidation than a conventional Pt/Al2O3 catalyst, turn over frequencies up to 3 orders of magnitude higher, and show improved resistance to deactivation. The increased activity is attributed to the stabilization of a Pt/PtO core/shell structure during operating conditions by the strong epitaxy between the Pt and the SrTiO3 support.

Original languageEnglish
Pages (from-to)629-635
Number of pages7
JournalACS Catalysis
Volume1
Issue number6
DOIs
Publication statusPublished - Jun 3 2011

Fingerprint

Propane
Atomic layer deposition
Platinum
Oxidation
Catalysts
Hydrothermal synthesis
Polymethyl Methacrylate
Sols
Hydrocarbons
Epitaxial growth
Stabilization
Temperature
Testing
strontium titanium oxide

Keywords

  • atomic layer deposition
  • nanocrystal support
  • nanoparticle catalysis
  • platinum
  • propane oxidation
  • SrTiO

ASJC Scopus subject areas

  • Catalysis

Cite this

Enterkin, J. A., Setthapun, W., Elam, J. W., Christensen, S. T., Rabuffetti, F. A., Marks, L. D., ... Marshall, C. L. (2011). Propane oxidation over Pt/SrTiO3 nanocuboids. ACS Catalysis, 1(6), 629-635. https://doi.org/10.1021/cs200092c

Propane oxidation over Pt/SrTiO3 nanocuboids. / Enterkin, James A.; Setthapun, Worajit; Elam, Jeffrey W.; Christensen, Steven T.; Rabuffetti, Federico A.; Marks, Laurence D.; Stair, Peter C; Poeppelmeier, Kenneth R; Marshall, Christopher L.

In: ACS Catalysis, Vol. 1, No. 6, 03.06.2011, p. 629-635.

Research output: Contribution to journalArticle

Enterkin, JA, Setthapun, W, Elam, JW, Christensen, ST, Rabuffetti, FA, Marks, LD, Stair, PC, Poeppelmeier, KR & Marshall, CL 2011, 'Propane oxidation over Pt/SrTiO3 nanocuboids', ACS Catalysis, vol. 1, no. 6, pp. 629-635. https://doi.org/10.1021/cs200092c
Enterkin JA, Setthapun W, Elam JW, Christensen ST, Rabuffetti FA, Marks LD et al. Propane oxidation over Pt/SrTiO3 nanocuboids. ACS Catalysis. 2011 Jun 3;1(6):629-635. https://doi.org/10.1021/cs200092c
Enterkin, James A. ; Setthapun, Worajit ; Elam, Jeffrey W. ; Christensen, Steven T. ; Rabuffetti, Federico A. ; Marks, Laurence D. ; Stair, Peter C ; Poeppelmeier, Kenneth R ; Marshall, Christopher L. / Propane oxidation over Pt/SrTiO3 nanocuboids. In: ACS Catalysis. 2011 ; Vol. 1, No. 6. pp. 629-635.
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