Low‐Temperature Catalytic H₂ Oxidation over Au Nanoparticle/TiO₂ Dual Perimeter Sites

Abstract

The catalytic reaction of H2+O2 over a Au/TiO2 catalyst was studied by transmission IR spectroscopy and DFT calculations. A reaction path of O2-assisted H2 dissociation at the Au/TiO2 dual perimeter site was found to proceed through a TiOOH intermediate (see scheme). The calculated barrier range (0.13–0.25 eV) for the sequence of low-energy steps agree with the experimental Ea of 0.22 eV. 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.