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Pd Nanowires
In this project we use photoemission electron microscopy (PEEM) at the Diamond Light Source, and STM at UCL, to investigate Pd nanostructures deposited on TiO2; a system relevant to strong metal support interactions in catalysis. Pd forms two distinct types of nanoparticles: long rod-like 'wires' and pseudo-hexagonal flat-topped islands. X-ray PEEM shows definitively that the nanoparticles are composed of palladium and separated by bare substrate. Pd nanoparicles appear bright on a dark background. (Fig 2) The brightness indicates their Pd composition, whereas the dark background indicates no Pd is present on the surface of the substrate between the nanoparticles.
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