Unique structure of active platinum-bismuth site for oxidation of carbon monoxide

Abstract As the technology development, future advanced combustion engines must be designed to perform at a low temperature. Thus, it is great challenge synthesize high active and stable catalysts resolve exhaust below 100 °C. Here, we report that bismuth as dopant added form platinum-bismuth cluster on silica for CO oxidation. The highly reducible oxygen species provided by surface metal-oxide (M-O) interface could activated temperature (~50 °C) with 2 production rate of 487 ? mol CO2 ·g Pt ?1 ·s 110 Experiment data combined density functional calculation (DFT) results demonstrate Pt?O?Bi structure site oxidation via providing moderate adsorption activating molecules electron transformation between platinum atom carbon monoxide. These findings provide unique general approach towards design potential excellent performance redox reaction.