Synergic CO oxidation activities of boron–CeO2 hybrid materials prepared by dry and wet milling methods
Source abstract
Abstract
Abstract Boron–CeO 2 hybrid materials were prepared by dry and wet ball-milling methods and characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), FT-IR and X-ray photoelectron spectroscopy (XPS). We also demonstrated CO oxidation activity of the material using temperature-programmed reaction mass spectrometry, and found an interesting synergic effect of CO oxidation in response to hybridization of boron and CeO 2 . The oxidation state of Ce was found to have changed from +4 to +3 during the milling process, which was confirmed by the Ce 3d XPS scan result. These findings indicate that boron maintains the convertible oxidation states (Ce 3+ ↔Ce 4+ ) of Ce at the interface between boron and CeO 2 during the CO oxidation reaction. The present study highlights the potential application of boron and CeO 2 hybrid materials to pollution control, chemical industry and propulsion energy sources.
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Research context
OpenAlex topics: Catalytic Processes in Materials Science · Catalysis and Oxidation Reactions · Catalysis and Hydrodesulfurization Studies
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