Thermally stable single-atom platinum-on-ceria catalysts via atom trapping

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Science  08 Jul 2016:
Vol. 353, Issue 6295, pp. 150-154
DOI: 10.1126/science.aaf8800

Hot single-atom catalysts

For heterogeneous catalysts made from precious metal nanoparticles adsorbed on metal oxides, high temperatures are the enemy. The metal atoms become mobile and the small particles grow larger, causing a loss in surface area and hence in activity. Jones et al. turned this process to their advantage and used these mobile species to create single-atom platinum catalysts. The platinum on alumina supported transfers in air at 800°C to ceria supports to form highly active catalysts with isolated metal cations.

Science, this issue p. 150