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Catalysis Letters

, Volume 142, Issue 2, pp 275–281 | Cite as

Nanocasting Synthesis of Mesostructured Co3O4 via a Supercritical CO2 Deposition Method and the Catalytic Performance for CO Oxidation

  • Yanhua Zhang
  • Aiqin Wang
  • Yanqiang Huang
  • Qinqin Xu
  • Jianzhong Yin
  • Tao Zhang
Article

Abstract

We demonstrate a supercritical CO2 (scCO2) deposition method to synthesize mesostructured Co3O4 with crystalline walls using SBA-15 as the hard template. By variation of the scCO2 pressure, randomly organized nanorods or a highly ordered mesoporous structure of Co3O4 is obtained after only one filling operation. The catalytic tests show that the randomly organized Co3O4 nanorods display excellent activity for CO oxidation with the complete conversion of CO even at room temperature, while neither the ordered mesoporous nor bulk Co3O4 is active at this low-temperature, demonstrating the important role of Co3O4 morphology in catalysis.

Graphical Abstract

Keywords

Mesoporous Nanocasting Co3O4 Supercritical CO2 CO oxidation 

Notes

Acknowledgment

This work was supported by the National Natural Science Foundation of China (21173218, 21176235, and 21103173).

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Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • Yanhua Zhang
    • 1
    • 2
  • Aiqin Wang
    • 1
  • Yanqiang Huang
    • 1
  • Qinqin Xu
    • 3
  • Jianzhong Yin
    • 3
  • Tao Zhang
    • 1
  1. 1.State Key Laboratory of CatalysisDalian Institute of Chemical Physics, Chinese Academy of SciencesDalianChina
  2. 2.Graduate School of the Chinese Academy of SciencesBeijingChina
  3. 3.School of Chemical MachineryDalian University of TechnologyDalianChina

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