On the nature of the active Au species: CO oxidation on cyanide leached Au/TiO2 catalysts

- The CO oxidation activity of different Au species on Au/TiO2 catalysts was studied.
- Au compositions were varied by cyanide leaching and different catalyst treatments.
- Activity of leached catalysts depends strongly on treatment before/after leaching.
- Metallic Au0 particles are the active species for CO oxidation on Au/TiO2 catalysts.