Journal article

Demonstration of chemistry at a point through restructuring and catalytic activation at anchored nanoparticles

Dragos Neagu, Evangelos I Papaioannou, Wan KW Ramli, David N Miller, Billy J Murdoch, Herve Menard, Ahmed Umar, Anders J Barlow, Peter J Cumpson, John TS Irvine, Ian S Metcalfe

NATURE COMMUNICATIONS | NATURE PUBLISHING GROUP | Published : 2017

Abstract

Metal nanoparticles prepared by exsolution at the surface of perovskite oxides have been recently shown to enable new dimensions in catalysis and energy conversion and storage technologies owing to their socketed, well-anchored structure. Here we show that contrary to general belief, exsolved particles do not necessarily re-dissolve back into the underlying perovskite upon oxidation. Instead, they may remain pinned to their initial locations, allowing one to subject them to further chemical transformations to alter their composition, structure and functionality dramatically, while preserving their initial spatial arrangement. We refer to this concept as chemistry at a point and illustrate it..

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University of Melbourne Researchers

Grants

Awarded by European Research Council under the European Union's Seventh Framework Programme (FP)/ERC Grant


Awarded by EPSRC


Awarded by EPSRC Capital for Great Technologies


Awarded by Royal Society Wolfson Merit Award


Awarded by Engineering and Physical Sciences Research Council


Funding Acknowledgements

The research leading to these results has received funding from the European Research Council under the European Union's Seventh Framework Programme (FP/2007-2013)/ERC Grant Agreement Number 320725 and from the EPSRC via the research grants EP/J016454/1, EP/G01244X/1, EP/K015540/1, EP/J018414/1, as well as EPSRC Capital for Great Technologies grants EP/L017008/1 and EP/K022679/1, and a Royal Society Wolfson Merit Award (WRMA 2012/R2). We thank the National EPSRC XPS Users' Service, an EPSRC Mid-Range Facility and Sasol St Andrews for XPS data acquisition.