Catalytic reduction of nitrate in water over Pd-Cu/TiO2 catalyst: Effect of the strong metal-support interaction (SMSI) on the catalytic activity

- We prepared Pd-Cu/TiO2 catalysts with different anatase/rutile phase compositions.
- Pretreatment by H2 reduction generated an SMSI over the catalysts before the reaction.
- The catalyst containing more anatase phase showed stronger metal-support interaction.
- The performance of catalyst depended on the degree of SMSI.
- We correlated the catalytic performances with the degree of SMSI using TPR and XPS.