Cu-Promoted Cobalt Oxide Film Catalyst for Efficient Gas Emissions Abatement

  • Achraf El Kasmi
  • Muhammad Waqas
  • Patrick Mountapmbeme Koutou
  • Zhenyu TianEmail author


Thin film catalysts have been recently reported as promising catalysts owing to their good catalytic activity and reduced material amount, leading to low-cost efficient catalysts for gaseous emissions control. Here, we report the slight loading of Cu in cobalt spinel using a one-step pulsed-spray evaporation chemical vapor deposition (PSE-CVD) synthesis technique for efficient short-chain volatile organic compounds (VOCs) emissions treatment. Crystalline structure and morphology analyses revealed nano-crystallite sizes and open-like morphology. The catalytic performance was evaluated through the complete oxidation of C3H6, as a short-chain representative model of VOCs, at a high gas hourly space velocity (GHSV). Very good activity was obtained towards the complete abatement of C3H6 at low temperature and no carbon monoxide (CO) was formed during the oxidation process. Slightly-promoted Co3O4 catalyst with Cu introduction resulted in high catalytic activity comparing to the performance of the catalysts in the literature, due to the high dispersion of Cu and high active surface oxygen amount. Moreover, to evaluate the capability of the used catalysts under near realistic reaction conditions, CO2 effect on the catalytic activity was performed and the catalyst exhibited very good results. Thus, the adopted slightly-doping strategy to tailor a high active catalyst at low temperature could establish a very promising route to strongly enhance the activity of such other catalysts towards gas emissions abatement at low temperature.


low Cu-doping PSE-CVD technique thin film catalysts complete catalytic oxidation VOCs 


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The authors thank the financial support from the Ministry of Science and Technology of China (2017YFA0402800) and Natural Science Foundation of China (No. 91541102/51476168). Achraf El Kasmi would thank the support of Chinese Academy of Sciences for senior international scientists (Grant No. 2017PE009). Muhammad Waqas is grateful for the financial support of CAS-TWAS scholarship.


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Copyright information

© Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Achraf El Kasmi
    • 1
  • Muhammad Waqas
    • 1
    • 2
  • Patrick Mountapmbeme Koutou
    • 1
    • 3
  • Zhenyu Tian
    • 1
    • 2
    Email author
  1. 1.Institute of Engineering ThermophysicsChinese Academy of SciencesBeijingChina
  2. 2.University of Chinese Academy of SciencesBeijingChina
  3. 3.National Advanced School Engineering of MarouaUniversity of MarouaMarouaCameroon

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