한국세라믹학회지 (Journal of the Korean Ceramic Society)

  • 제54권1호
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  • Pages.23-27
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  • 2017
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  • 1229-7801(pISSN)
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  • 2234-0491(eISSN)
한국세라믹학회 (The Korean Ceramic Society)
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Biotemplate Synthesis of Micron Braid Structure CeO2-TiO2 Composite and Analysis of its Catalytic Behavior for CO Oxidation

  • Wang, Chencheng (School of Chemistry, Biology and Materials Engineering, Suzhou University of Science and Technology) ;
  • Jing, Lutian (Tianping college of Suzhou University of Science and Technology) ;
  • Chen, Mengpin (Tianping college of Suzhou University of Science and Technology) ;
  • Meng, Zeda (School of Chemistry, Biology and Materials Engineering, Suzhou University of Science and Technology) ;
  • Chen, Zhigang (School of Chemistry, Biology and Materials Engineering, Suzhou University of Science and Technology) ;
  • Chen, Feng (School of Chemistry, Biology and Materials Engineering, Suzhou University of Science and Technology) ;
  • Oh, Won-Chun (Department of Advanved Materials Science and Engineering, Hanseo University)
  • 투고 : 2016.05.24
  • 심사 : 2017.01.11
  • 발행 : 2017.01.31
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초록

A series of $CeO_2-TiO_2$ composite samples with different Ce/Ti molar ratios were prepared by the paper template. Powder X-ray diffraction (XRD) and transmission electron microscopy (TEM) were used to confirm a face-centered cubic lattice of $CeO_2$ with Ce/Ti =8:2 or 9:1 and a two phase mixture of anatase titania and face-centered cubic ceria with Ce/Ti = 7 : 3. The field emission scanning electron microscopy (FESEM) results suggest that the products are micron braid structures consisting of fibers with diameters in a range of $1-6{\mu}m$ and lengths of several hundred micrometers. $N_2$ absorption-desorption testing shows that the composite at Ce/Ti molar fraction of 8 : 2 has the largest BET surface area (about $81m^2{\cdot}g^{-1}$). Compared to the pure $CeO_2$ sample, the composites show superior catalytic activity for $H_2$ reduction and CO oxidation. For the micron braid structure $CeO_2-TiO_2$ composite (Ce/Ti = 8 : 2), due to the high surface area and the solid solution with appropriate $Ti^{4+}$ incorporation, the CO conversion at about $280^{\circ}C$ was above 50% and at $400^{\circ}C$ was 100%.

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피인용 문헌

  1. Template Synthesis of Porous Ceria-Based Catalysts for Environmental Application vol.25, pp.18, 2017, https://doi.org/10.3390/molecules25184242
  2. Photocatalytic Activity of Fibrous Ti/Ce Oxides Obtained by Hydrothermal Impregnation of Short Flax Fibers vol.26, pp.11, 2017, https://doi.org/10.3390/molecules26113399