Mechanism and Active Sites of the Oxidation of CO over Au/TiO₂

At low reaction temperatures (<320 K), moisture plays an essential role in promoting the oxidation of CO over Au/TiO2(110) surfaces, whereas at high temperatures (>320 K), such promotional effect is not observed, suggesting that the mechanism and active sites of the reaction change with the reaction temperature (see picture; r=rate of CO2 formation and p=pressure of H2O). Detailed facts of importance to specialist readers are published as ”Supporting Information”. Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.