Insight into active sites of Pd-Au/TiO2 catalysts in hydrogen peroxide synthesis directly from H2 and O2

- Pd monomer surrounded by Au atoms is assumed to be the primary active sites for H2O2 formation.
- Contiguous Pd ensembles are mainly responsible for H2O formation.
- The oxidation of H2 to H2O likely occurs at the interface between of Au and TiO2.