Pd-O-Ti(III) Interface (IMAGE) Science China Press Caption The atomic Pd-O-Ti(III) interface on the TiO2-supported Pd single-atom catalyst readily activates O2 into superoxide, thus promoting the catalytic oxidation of CO. Credit ©Science China Press Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.