NaBH4 Surface Modification on CeO2 Nanorods Supported Transition‐Metal Catalysts for Low Temperature CO Oxidation

Abstract In this report, CeO 2 nanorods (CeO 2 NR) were first chemically etched by different amounts (0.6, 3 and 6 wt %) of NaBH 4 , which were employed to understand the etching effect on the support structure, surface defects, and reducibility of modified CeO 2 NR supports. The 6 wt % NaBH 4 etched CeO 2 NR was further used as support materials to load transition‐metals (TM: Cu, Co, Ni, Fe and Mn) catalysts, in order to investigate the support etching effect on the reducibility and catalytic performance of CeO 2 NR supported TM catalysts. In comparison with the catalytic performance of CeO 2 NR supported TM catalysts in literature, the 6 wt % NaBH 4 etched CeO 2 NR supported catalysts show clearly enhanced CO oxidation performance at lower temperature, which is mainly attributed to the created surface defects by boron doped CeO 2 surface during NaBH 4 chemical etching and strong metal‐support interaction.