Superresolution fluorescence mapping of single-nanoparticle catalysts reveals spatiotemporal variations in surface reactivity

Significance Here we use time-lapsed superresolution mapping of single-molecule catalysis events on individual nanoparticle surface to observe time-varying changes in the spatial distribution of catalysis events on Sb-doped TiO 2 nanorods and Au triangle nanoplates. The ability to measure both the spatial- and time-resolved activity of different types of active sites on single-nanoparticle surface leads to a more comprehensive understanding of reactivity patterns and may enable the design of new and more productive heterogeneous catalysts.