Monolithic Au/CeO nanorod frameworks (NFs) with porous structure were prepared by dealloying melt-spun AlCeAu ribbons. After calcination in O, a 3D Au/CeO NF catalyst with large surface area was obtained and used for low-temperature CO oxidation. The small Au clusters/nanoparticles (NPs) were in situ supported and highly dispersed on the nanorod surface, creating many nanoscale contact interfaces. XPS results demonstrated that high-concentration oxygen vacancy and Au /Au co-existed in the calcined sample. The Au/CeO nanorod catalyst calcined at 400 °C exhibited much higher catalytic activity for CO oxidation compared with the dealloyed sample and bare CeO nanorods. Moreover, its complete reaction temperature was as low as 91 °C. The designed Au/CeO NF catalyst not only possessed extreme sintering resistance but also exhibited high performance owing to the enhanced interaction between the Au clusters/NPs and CeO nanorod during calcination.
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