Highly active PdCeOx composite catalysts for low-temperature CO oxidation, prepared by plasma-arc synthesis

- The plasma-arc method was applied to synthesize composite palladium-cerium catalysts.
- The catalysts demonstrated the high efficiency in CO oxidation at low temperatures.
- Carbon of PdCeC composite prevented sintering during high-temperature calcination.
- The high-defect solid solution PdCeOx with high concentration of Ce3+ formed.
- TOF for the composite catalyst was higher than that of chemically prepared catalyst.