4.6 Article

N-Doped Porous Carbon-Anchored Pd Nanoparticles: A Highly Efficient Catalyst for Fe(II)EDTA-NO Reduction

期刊

JOURNAL OF PHYSICAL CHEMISTRY C
卷 125, 期 31, 页码 17068-17077

出版社

AMER CHEMICAL SOC
DOI: 10.1021/acs.jpcc.1c04736

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资金

  1. Ministry of Industry and Information Technology of the People's Republic of China [CDGC01-KT16]
  2. Fundamental Research Funds for the Central Universities [215220002]

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The use of N-doped porous carbons as a support material for Pd/NPCs synthesis significantly enhances the performance of nitric oxide reduction catalysts, with high denitrification rate and selectivity.
Complex absorption is considered an efficient method to reduce the emission of nitric oxide. At present, it is still a challenge to enhance the regeneration performance of complex solution by changing the structure of the support to enhance the reduction capacity of the catalyst. Herein, N-doped porous carbons (NPCs) were used as an excellent support for synthesizing Pd/NPCs, and then they were utilized as a catalyst toward Fe(II)EDTA-NO reduction. The characterization results of X-ray diffraction, X-ray photoelectron spectra, and transmission electron microscopy confirmed that the dispersion of Pd nanoparticles (NPs) could be improved by N atoms in NPCs. Benefiting from the appropriate Pd NPs particle size and the intrinsic advantages of the support, the resultant Pd/NPCs exhibited superior performances such as a denitrification rate of 90.4% with an N-2 selectivity of 99.6% (used for 5 min under mild conditions) and a turnover frequency of 1916 h(-1). In addition, the kinetic calculation and reaction mechanism derivation provided a new avenue for the fabrication of highly effective catalysts over liquid phase denitrification.

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