Figure 5From: In situ- generated metal oxide catalyst during CO oxidation reaction transformed from redox-active metal-organic framework-supported palladium nanoparticlesXPS spectra. (a) Ni 2p3/2 of ra-MOF, (c) Ni 2p3/2 of Pd@ra-MOF, and (e) Pd 3d5/2 of Pd@ra- MOF before and (b, d, f) after CO oxidation reaction (fifth run).Back to article page