In situ environmental HRTEM discloses low temperature carbon soot oxidation by ceria-zirconia at the nanoscale.

The very close contact between ceria-zirconia and carbon soot allows the detection of oxygen transfer from ceria-zirconia to carbon by in situ Environmental HRTEM already at low temperatures. This highlights the outstanding redox behavior and soot oxidation potential of ceria-zirconia when suitable carbon-catalyst arrangements are generated at the nanoscale.