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Ferdi Schüth and colleagues have found that gold nanoparticles encapsulated in a zirconia shell show significantly enhanced catalytic activity for carbon monoxide oxidation when doped with small amounts of TiO2.
The titania promotes high activity at low temperature while the zirconia shell acts as a structural support, providing stability against sintering.
These characteristics are important for potential applications in air purification for long-duration space travel and vehicle exhaust gas catalysis.
Activity improvement of gold yolk–shell catalysts for CO oxidation by doping with TiO2
Robert Güttel, Michael Paul and Ferdi Schüth
Catal. Sci. Technol., 2011, Advance Article
DOI: 10.1039/C0CY00026D, Communication
