CoxPd are prepared using the modified polyvinyl alcohol-protected reduction method.
CoxPd nanoparticles displayed core-shell (core: Pd; shell: Co) structure.
CoxPd nanoparticles with a core-shell structure exhibit super thermal stability.
CoxPd/3DOM CeO2 possess good O2 and CH4 adsorption abilities.
CoxPd/3DOM CeO2 perform well in methane oxidation.