SiO2-Surface-Assisted Controllable Synthesis of TaON and Ta3N5 Nanoparticles for Alkene Epoxidation

Authors

  • Dr. Qingsheng Gao,

    Corresponding author
    1. Department of Colloid Chemistry, Max Planck Institute of Colloids and Interfaces, Research Campus Golm, 14424 Potsdam (Germany)
    • Department of Colloid Chemistry, Max Planck Institute of Colloids and Interfaces, Research Campus Golm, 14424 Potsdam (Germany)
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  • Sinong Wang,

    1. Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433 (P.R. China)
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  • Dr. Yuchun Ma,

    1. Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433 (P.R. China)
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  • Prof. Yi Tang,

    1. Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433 (P.R. China)
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  • Dr. Cristina Giordano,

    1. Department of Colloid Chemistry, Max Planck Institute of Colloids and Interfaces, Research Campus Golm, 14424 Potsdam (Germany)
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  • Prof. Markus Antonietti

    1. Department of Colloid Chemistry, Max Planck Institute of Colloids and Interfaces, Research Campus Golm, 14424 Potsdam (Germany)
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  • We thank the Max Planck Society, BMBF (035F0353A-E), the National Science Foundation of China (20873028, 21073041), and the Major State Basic Research Development Program (2009CB623506) for financial support.

Abstract

original image

Touching the surface: Well-defined TaON and Ta3N5 nanoparticles were fabricated by a SiO2-surface-assisted urea method, in which silica catalyzes CNx formation from urea. Such controlled nitridation endows the nanoparticles with improved activity and tunable selectivity for alkene epoxidation because of the increased electron density around Ta and surface basicity.

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