Synthesis of Co/Ni Unitary‐ or Binary‐Doped CeO2 Mesoporous Nanospheres and Their Catalytic Performance for CO Oxidation
作者： Xiufang Liu , Lu Han , Wei Liu , Yanzhao Yang
关键词: X-ray photoelectron spectroscopy 、 Catalytic oxidation 、 High-resolution transmission electron microscopy 、 Mesoporous material 、 Chemistry 、 Catalysis 、 Oxide 、 Solvothermal synthesis 、 Inorganic chemistry 、 Metal ions in aqueous solution
摘要: In this paper, pure ceria, ceria doped with transition metal ions (Co2+, Ni2+), and Co/Ni binary-doped mesoporous notched hollow nanospheres were prepared from a one-step solvothermal synthesis. By introducing ions, the composition can be freely manipulated. The morphologies crystalline structures of products characterized in detail by XRD, TEM, SEM, HRTEM. surface compositions as-prepared samples detected Raman spectroscopy, energy-dispersive X-ray spectrometry (EDS), photoelectron spectroscopy (XPS). areas pore-size distributions as-obtained investigated N2 adsorption–desorption measurements. Temperature-programmed reduction measurements under H2 (H2-TPR) showed better behavior samples. Preliminary CO catalytic oxidation experiments indicated that strikingly higher activity, owing to intrinsic defects addition, used as excellent supports for gold nanoparticles remove oxidation; therefore, they demonstrate promising potential environmental remediation. This synthesis is versatile approach it could extended other binary or ternary oxide systems.
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