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Issue 42, 2015
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Modular construction of size-selected multiple-core Pt–TiO2 nanoclusters for electro-catalysis

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Abstract

Size-selected binary platinum–titanium dioxide (Pt–TiO2) clusters have been generated using a magnetron sputtering gas condensation cluster source and imaged using a Scanning Transmission Electron Microscope (STEM) in High Angle Annular Dark Field (HAADF) mode. The core–shell clusters exhibit a Pt core of preferred size 30 ± 6 atoms (1 nm), embedded in an oxidised Ti shell, independent of the overall cluster size (varied between 2 nm and 5 nm). Smaller clusters, with mass ≤50 000 Daltons, show a single Pt core while larger clusters, ≥55 000 Daltons, feature multiple Pt cores, either isolated or aggregated within the TiO2 shell. These clusters may have applications in solar hydrogen production; preliminary work indicates catalytic active in the hydrogen evolution reaction.

Graphical abstract: Modular construction of size-selected multiple-core Pt–TiO2 nanoclusters for electro-catalysis

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Publication details

The article was received on 16 Jan 2015, accepted on 03 Mar 2015 and first published on 04 Mar 2015


Article type: Paper
DOI: 10.1039/C5CP00285K
Citation: Phys. Chem. Chem. Phys., 2015,17, 28005-28009
  • Open access: Creative Commons BY license
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    Modular construction of size-selected multiple-core Pt–TiO2 nanoclusters for electro-catalysis

    C. E. Blackmore, N. V. Rees and R. E. Palmer, Phys. Chem. Chem. Phys., 2015, 17, 28005
    DOI: 10.1039/C5CP00285K

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