Preparation and catalytic behavior of reduced graphene oxide supported cobalt oxide hybrid nanocatalysts for CO oxidation

https://doi.org/10.1016/S1003-6326(18)64871-XGet rights and content

Abstract

The reduced graphene oxide (rGO) supported cobalt oxide nanocatalysts were prepared by the conventional precipitation and hydrothermal method. The as-prepared rGO-Co3O4 was characterized by the XRD, Raman spectrum, SEM, TEM, N2-sorption, UV-Vis, XPS and H2-TPR measurements. The results show that the spinel cobalt oxide nanoparticles are highly fragmented on the rGO support and possess uniform particle size, and the as-prepared catalysts possess high specific surface area and narrow pore size distribution. The catalytic properties of the as-prepared rGO-Co3O4 catalysts for CO oxidation were evaluated through a continuous-flow fixed-bed microreactor-gas chromatograph system. The catalyst with 30% (mass fraction) reduced graphene oxide exhibits the highest activity for CO complete oxidation at 100 °C.

References (40)

  • Jian-liang CAO et al.

    Oil shale ash supported CuO nanocatalysts: Preparation, characterization and catalytic activity for CO oxidation [J]

    Journal of Environmental Chemical Engineering

    (2015)
  • Jing JIANG et al.

    Synthesis of sphere-like Co3O4 nanocrystals via a simple polyol route [J]

    Materials Letters

    (2007)
  • C W TANG et al.

    Evaluation of carbon monoxide oxidation over CeO2/Co3O4 catalysts: Effect of ceria loading [J]

    Catalysis Today

    (2008)
  • M KANG et al.

    Catalytic carbon monoxide oxidation over CoOx/CeO2 composite catalysts [J]

    Applied Catalysis A

    (2003)
  • Jin-yong LUO et al.

    Mesoporous Co3O4-CeO2 and Pd/Co3O4-CeO2 catalysts: Synthesis, characterization and mechanistic study of their catalytic properties for low-temperature CO oxidation [J]

    Journal of Catalysis

    (2008)
  • Jian-liang CAO et al.

    Mesoporous Co-Fe-O nanocatalysts: Preparation, characterization and catalytic carbon monoxide oxidation [J]

    Journal of Environmental Chemical Engineering

    (2014)
  • P BROQVIST et al.

    A DFT study on CO oxidation over Co3O4 [J]

    Journal of Catalysis

    (2002)
  • M J POLLARD et al.

    A mechanistic study of the low-temperature conversion of carbon monoxide to carbon dioxide over a cobalt oxide catalyst [J]

    Journal of Catalysis

    (2008)
  • G SEDMAK et al.

    Kinetics of selective CO oxidation in excess of H2 over the nanostructured Cu0.1Ce0.9O2-y catalyst [J]

    Journal of Catalysis

    (2003)
  • Shu-tang CHEN et al.

    Synthesis of Pd/Fe3O4 hybrid nanocatalysts with controllable interface and enhanced catalytic activities for CO oxidation [J]

    The Journal of Physical Chemistry C

    (2012)
  • Cited by (24)

    • Heteroatom doping effect of Pt/rGO catalysts for formaldehyde abatement at ambient temperature

      2022, Chemical Physics Impact
      Citation Excerpt :

      Depending on the position of the reduction peaks these peaks can be clarified as α (T> 280 °C), β (230 °C < T< 280 °C) and γ (T< 230 °C) ones. The broad reduction peak (α) at 284.7 °C can be attributed to the reduction of oxygen in rGO support [38]. The reduction peak (γ) of the undoped sample of Pt/rGO is appearing at around 209.5 °C, while the reduction peak (γ) of the N-doped Pt/N-rGO sample is located at 198.3 °C, indicating the adsorbed oxygen becomes more active.

    • Enhanced Catalytic Activity for CO Oxidation by Highly Active Pd Nanoparticles Supported on Reduced Graphene Oxide /Copper Metal Organic Framework

      2021, Journal of the Taiwan Institute of Chemical Engineers
      Citation Excerpt :

      This enhancement of the catalytic activity in the presence of rGO due to graphene-based materials with functional groups and defects of different nature, play one of the major roles in catalysis, by activating oxygen dissociation and electron transfer between gas molecules and catalysts surface [66,67]. Moreover, plays a vital role in the dispersion of Pd NPs on the catalyst surface, resulting in higher number of Pd active sites compared with the catalyst without rGO [67,68]. We suppose, in this case, adsorbed CO molecules play the role of electron donors, forming positively charged radicals and easily interact with negatively charged oxygen radicals on the Pd-rGO-MOF surface.

    • Recent advances in catalytic systems in the prism of physicochemical properties to remediate toxic CO pollutants: A state-of-the-art review

      2021, Chemosphere
      Citation Excerpt :

      Yan et al. performed CO oxidation over a graphene oxide supported cobalt oxide hybrid nanocatalyst (rGO-Co3O4). The rGO-Co3O4 catalyst has a uniform particle size, a large surface area, and a narrow distribution of pore sizes, which results in a maximum CO oxidation activity at 100 °C (2nd entry in Table 7) (Yan et al., 2018). Huan et al. prepared a ceria-promoted cobalt oxide catalyst (CeO2–Co3O4) for CO oxidation.

    View all citing articles on Scopus

    Foundation item: Projects (51404097, 51504083, 21404033) supported by the National Natural Science Foundation of China; Project (2016M592290) supported by China Postdoctoral Science Foundation; Project (NSFRF1606) supported by the Fundamental Research Funds for the Universities of Henan Province, China; Projects (J2016-2, J2017-3) supported by Foundation for Distinguished Young Scientists of Henan Polytechnic University, China; Project (16A150009) supported by the Key Scientific Research Project for Higher Education of Henan Province, China; Project (166115) supported by the Postdoctoral Science Foundation of Henan Province, China; Project (17HASTIT029) supported by Program for Science & Technology Innovation Talents in Universities of Henan Province, China; Projects (162300410113, 162300410119) supported by Natural Science Foundation of Henan Province of China

    View full text