Ag supported on electrospun macro-structure CeO2 fibrous mats for diesel soot oxidation

Chanmin Lee, Joo Il Park, Yong Gun Shul, Hisahiro Einaga, Yasutake Teraoka

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59 Citations (Scopus)

Abstract

Ceria oxide (CeO2) nanofibers with diameters of 241-253nm were produced via the electrospinning method. They were then applied as new support materials for silver nanoparticles and their effectiveness as diesel soot oxidation catalysts was examined. The crystal structure of the Ag was confirmed by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), high-resolution transmission electron microscopy (HR-TEM), and energy dispersive spectroscopy (EDS). The diesel soot oxidation experiment was performed using a mixture of carbon black and the fabricated catalyst. In the tight contact and loose contact modes, the highest temperatures of both the CeO2-fiber-supported Ag catalysts (Ag/CeO2) calcined at 500°C and the CeO2 fibers calcined at 500°C were shifted to a lower temperature range, compared with JRC-CEO-3 (a commercial catalyst). In addition, the activation energy also showed similar behavior. Thus, the fibrous CeO2 and Ag/CeO2 have been shown to be effective and promising catalysts for soot oxidation.

Original languageEnglish
Pages (from-to)185-192
Number of pages8
JournalApplied Catalysis B: Environmental
Volume174-175
DOIs
Publication statusPublished - 2015 Sep 1

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All Science Journal Classification (ASJC) codes

  • Catalysis
  • Environmental Science(all)
  • Process Chemistry and Technology

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