Gadolinium doped cerium oxide for soot oxidation: Influence of interfacial metal-support interactions

- Supported Ce-Gd-oxides are applied for soot oxidation for the first time.
- Gd2O3 doping facilitates enhanced extrinsic oxygen vacancy concentration in ceria.
- The Ce-Gd/TiO2 exhibited the highest soot oxidation activity.
- Key parameters that involved in tuning the activity are discussed.