Metal-organic framework-derived porous CeO2 loading Au as efficient nanocatalysts for CO oxidation and 4-nitrophenol reduction

In this paper, two Au/CeO 2 catalytic systems have been fabricated through the synthesis of porous CeO 2 from Ce-BTC MOFs nanorod and nanobundle precursors by thermal annealing, and the subsequent Au loading. Significantly, the catalytic activity of Au/CeO 2 nanorods is higher than that of bare CeO 2 and even Au/CeO 2 nanobundles for both CO oxidation and 4-nitrophenol reduction. The remarkably enhanced performance of Au/CeO 2 nanorods can be attributed to the unique porous structure, high surface area, abundant oxygen vacancies on the surface of CeO 2 , and the synergistic effect between gold and ceria.