Abstract
We have developed a facile three-step fabricating procedure whereby uniformly distributed and highly catalytically active Pt nanoparticles (NPs) were anchored on the superparamagnetic and catalytically active CuFe2O4 submicrospheres to form core-shell CuFe2O4@Pt nanocomposite catalyst. The as-prepared CuFe2O4 and CuFe2O4@Pt catalysts were characterized by transmission electron microscopy (TEM) and high-angle annular dark field-scanning transmission electron microscopy (HAADF-STEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). Their catalytic properties for reduction of [Fe(CN)6]3− to [Fe(CN)6]4− by S2O32− were comparatively studied. The results indicate that the inherent catalytic performance of CuFe2O4 can be improved dramatically when Pt NPs are homogeneously dispersed and firmly immobilized on its surface. The remarkably enhanced catalytic activity is mainly ascribed to the excellent catalytic performance of noble metal Pt.
Highlights
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A facile three-step fabricating procedure is demonstrated to fabricate CuFe2O4@Pt NPs.
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CuFe2O4@Pt exhibits superior catalytic efficiency to CuFe2O4 for reduction of [Fe(CN)6]3−.
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The enhanced mechanism is due to the excellent catalytic activity of noble metal Pt.
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Acknowledgements
This work is supported by the Natural Science Foundation of Shaanxi Province (No. 2018JM2032) and the Key Research and Development Program of Shaanxi Province (No. 2020ZDLGY11-02).
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Ma, J., Liu, Y., Du, Q. et al. Pt nanoparticles anchored on bifunctional CuFe2O4 submicrospheres with improved catalytic properties for the reduction of [Fe(CN)6]3− by S2O32−. J Sol-Gel Sci Technol 105, 758–767 (2023). https://doi.org/10.1007/s10971-022-05963-1
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DOI: https://doi.org/10.1007/s10971-022-05963-1