CO oxidation catalyzed by ag nanoparticles supported on SnO/CeO2

Inayatali Khan, Nida K M Sajid, Amin Badshah, Muhammad Hamid Sarwar Wattoo, Dalaver H. Anjum, Muhammad Amtiaz Nadeem

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    8 Scopus citations

    Abstract

    Ag-Sn/CeO2 catalysts were synthesized by the co-precipitation method with different Ag-Sn wt.% loadings and were tested for the oxidation of CO. The catalysts were characterized by powder X-ray diffractometry (XRD), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), energy dispersive X-ray spectroscopy (EDS), and selected area electron diffraction (SAED) techniques. UV-Vis measurements were carried out to elucidate the ionic states of the silver particles, and the temperature-programmed reduction (TPR) technique was employed to check the reduction temperature of the catalyst supported on CeO2. There are peaks for silver crystallites in the X-ray diffraction patterns and the presence of SnO was not well evidenced by the XRD technique due to sintering inside the 3D array channels of CeO2 during the calcination process. The Ag-Sn/CeO2 (4%) catalyst was the most efficient and exhibited 100% CO oxidation at 100 °C due to small particle size and strong electronic interaction with the SnO/CeO2 support. © 2015 Sociedade Brasileira de Química.
    Original languageEnglish (US)
    Pages (from-to)695-704
    Number of pages10
    JournalJournal of the Brazilian Chemical Society
    Volume26
    Issue number4
    DOIs
    StatePublished - 2015

    ASJC Scopus subject areas

    • Chemistry(all)

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