Microfluidics and Nanofluidics

, Volume 16, Issue 1–2, pp 141–148 | Cite as

Catkin liked nano-Co3O4 catalyst built-in organic microreactor by PEMOCVD method for trace CO oxidation at room temperature

Research Paper


In this paper, tricobalt tetraoxide (Co3O4) catalyst was coated on the polydimethylsiloxane microchannel by the plasma-enhanced metal-organic chemical vapor deposition technology. The obtained Co3O4 film was characterized by SEM, XRD, XPS, and TEM, and the results show that the as-deposited Co3O4 film was initially composed of many cauliflowers-shaped microclusters. Also, the microcauliflower was transformed from an amorphous phase to a crystal phase when the Co3O4 film was treated by Ar and O2 plasma for more than 20 min, and the crystal lattice line occurred on the surface of nano-sized-Co3O4 particles. Meanwhile, the interface of Co3O4 particles with diameter between 3 and 12 nm became obvious and some nano-catkin structures were also formed on the Co3O4 film. The ratio of Co3+/Co2+ in the spinel-type Co3O4 was nearly 2, and the nano-particles predominantly expose their {311}, {111}, and {220} planes. These morphologies and structure characteristics were found to be ideal for increasing the catalytic activity efficiency of Co3O4 for CO oxidation, and the catalytic stability of Co3O4 coated on the organic microreactor lasted nearly 85 h for trace CO oxidation at room temperature.


Nano-sized catalyst  Organic microreactor  PEMOCVD  Heterogeneous catalytic oxidation 



We thank supports from the scholarship of Research in Paris, the National Natural Science Foundation of China under Grant No. 11175157, the Young Scientists Fund of the National Natural Science Foundation of China under Grant No. 11005151, Zhejiang Natural Science Foundation of China under No. Y6100045, 521 Talent Project of Zhejiang Sci-Tech University, and Zhejiang Provincial Key Innovation team (No. 2012R10038).


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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • G. L. Chen
    • 1
    • 2
  • C. Guyon
    • 2
  • Z. X. Zhang
    • 1
  • B. Da Silva
    • 2
  • P. Da Costa
    • 3
  • S. Ognier
    • 2
  • D. Bonn
    • 2
    • 4
  • M. Tatoulian
    • 2
  1. 1.Key Laboratory of Advanced Textile Materials and Manufacturing Technology, and Engineering Research Center for Eco-Dyeing and Finishing of Textiles, Ministry of EducationZhejiang Sci-Tech UniversityHangzhouPeople’s Republic of China
  2. 2.Laboratoire de Génie des Procédés Plasmas et Traitements de Surfaces, École Nationale Supérieure de Chimie de Paris, Chimie ParisTechUniversité Pierre et Marie CurieParisFrance
  3. 3.Institut Jean Le Rond d’AlembertUniversité Pierre et Marie CurieSaint Cyr L’ÉcoleFrance
  4. 4.IOPUvAAmsterdamThe Netherlands

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