This presentation will describe our work of using single-molecule fluorescence microscopy to interrogate spatial and temporal correlations of catalytic reactions on single nanocatalysts and with single crystal facets at single-reaction resolution and nanometer precision. We have imaged and resolved catalytic reactions on a single shaped nanocatalyst at nanometer resolution, which maps the reactivity of different surface sites and uncovers diverse spatial reactivity patterns at the nanoscale. This spatial resolution of catalysis also enables us to probe communication of catalytic reactions at different locations on a single nanocatalyst, and show that catalytic reactions can �communicate� with each other over a distance of hundreds of nanometers and a timescale of tens to hundreds of seconds within a single nanocatalyst. This catalytic communication is phenomenologically analogous to allosteric effects in enzymes, nature's most important catalysts.

Spatiotemporal catalytic dynamics within single nanocatalysts

248th National Meeting (2014)

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