Nanoparticulate PdZn – Pathways towards the synthetic control of nanosurface properties

V. Engels, D.A. Jefferson, F. Benaskar, P.C. Thuene, A. Berenguer-Murcia, B.F.G. Johnson, A.E.H. Wheatley

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Abstract

This paper reports an in-depth structural investigation of PdZn nanoparticulates prepared over an entire compositional range. By using a combination of HRTEM, ICP-OES, EDX and XPS alongside PXRD, we are able to show how a liquid-type reduction process can be exploited to target different PdZn bimetallic structures while maintaining reproducibly narrow particle size distributions and average particle diameters of approximately 3 nm. Samples have been further analyzed by quantitative phase analysis of the Rietveld refined diffraction data, providing indications as to how variations in specific surface compositions are obtained when Zn is used as the alloying metal. The influence of nanolattice strain is investigated by geometric analysis of TEM data. Results suggest, in conjunction with previously published catalytic data, how different compositions of this specific bimetallic system may be exploited in catalytic processes to control substrate/product affinity. We thus demonstrate a new and simplified approach to PdZn bimetallics, which may offer novel perspectives for applications in industrial catalysis.
Original languageEnglish
Article number205701
Pages (from-to)205701-1/10
Number of pages10
JournalNanotechnology
Volume22
Issue number20
DOIs
Publication statusPublished - 2011

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Alloying
Surface structure
Particle size analysis
Catalysis
Particles (particulate matter)
Energy dispersive spectroscopy
X ray photoelectron spectroscopy
Diffraction
Metals
Transmission electron microscopy
Liquids
Substrates
Chemical analysis

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Engels, V., Jefferson, D. A., Benaskar, F., Thuene, P. C., Berenguer-Murcia, A., Johnson, B. F. G., & Wheatley, A. E. H. (2011). Nanoparticulate PdZn – Pathways towards the synthetic control of nanosurface properties. Nanotechnology, 22(20), 205701-1/10. [205701]. https://doi.org/10.1088/0957-4484/22/20/205701
Engels, V. ; Jefferson, D.A. ; Benaskar, F. ; Thuene, P.C. ; Berenguer-Murcia, A. ; Johnson, B.F.G. ; Wheatley, A.E.H. / Nanoparticulate PdZn – Pathways towards the synthetic control of nanosurface properties. In: Nanotechnology. 2011 ; Vol. 22, No. 20. pp. 205701-1/10.
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Engels, V, Jefferson, DA, Benaskar, F, Thuene, PC, Berenguer-Murcia, A, Johnson, BFG & Wheatley, AEH 2011, 'Nanoparticulate PdZn – Pathways towards the synthetic control of nanosurface properties', Nanotechnology, vol. 22, no. 20, 205701, pp. 205701-1/10. https://doi.org/10.1088/0957-4484/22/20/205701

Nanoparticulate PdZn – Pathways towards the synthetic control of nanosurface properties. / Engels, V.; Jefferson, D.A.; Benaskar, F.; Thuene, P.C.; Berenguer-Murcia, A.; Johnson, B.F.G.; Wheatley, A.E.H.

In: Nanotechnology, Vol. 22, No. 20, 205701, 2011, p. 205701-1/10.

Research output: Contribution to journalArticleAcademicpeer-review

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AB - This paper reports an in-depth structural investigation of PdZn nanoparticulates prepared over an entire compositional range. By using a combination of HRTEM, ICP-OES, EDX and XPS alongside PXRD, we are able to show how a liquid-type reduction process can be exploited to target different PdZn bimetallic structures while maintaining reproducibly narrow particle size distributions and average particle diameters of approximately 3 nm. Samples have been further analyzed by quantitative phase analysis of the Rietveld refined diffraction data, providing indications as to how variations in specific surface compositions are obtained when Zn is used as the alloying metal. The influence of nanolattice strain is investigated by geometric analysis of TEM data. Results suggest, in conjunction with previously published catalytic data, how different compositions of this specific bimetallic system may be exploited in catalytic processes to control substrate/product affinity. We thus demonstrate a new and simplified approach to PdZn bimetallics, which may offer novel perspectives for applications in industrial catalysis.

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Engels V, Jefferson DA, Benaskar F, Thuene PC, Berenguer-Murcia A, Johnson BFG et al. Nanoparticulate PdZn – Pathways towards the synthetic control of nanosurface properties. Nanotechnology. 2011;22(20):205701-1/10. 205701. https://doi.org/10.1088/0957-4484/22/20/205701