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Nanoscale Materials

GaPd Analysis

 

Nanostructured and low dimensional materials may possess remarkable structures and properties quite distinct from bulk systems. Our research uses advanced electron microscopy to make crucial links between their synthesis, structure, properties and performance. We use state-of-the art techniques and develop innovative methods to extend characterisation capabilities. These span imaging, spectroscopy, diffraction, tomographic and temporal studies, and range from the nanoscale down to single-atom sensitivity. Nanomaterials we study include nanoparticles, 2D materials, few-atom clusters and single-atom engineered systems, often in the context of heterogeneous catalysis.

The Figure at the top of the page shows  how annular dark–field imaging and electron energy-loss spectroscopy in the scanning transmission microscope were used to provide directly-interpretable imaging and chemical analysis of GaPd2 nanocatalysts, revealing intricacies of the “nano-sized” intermetallic compound that are catalytically significant and crystallographically intruiging. For more details please see:

Leary et al. Revealing the Atomic Structure of Intermetallic GaPd2 Nanocatalysts by using Aberration-Corrected Scanning Transmission Electron Microscopy. Chem. Cat. Chem. (2013) 5(9): 2599-2609.  DOI: 10.1002/cctc.201300029