CO Oxidation Catalyzed by Ag Nanoparticles Supported on SnO/CeO2

Inayat A. Khan, Nida Sajid, Amin Badshah, Muhammad H. S. Wattoo, Dalaver H. Anjum, Muhammad A. Nadeem
2015 Journal of the Brazilian Chemical Society  
Ag-Sn/CeO 2 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
more » ... les, and the temperature-programmed reduction (TPR) technique was employed to check the reduction temperature of the catalyst supported on CeO 2 . 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 CeO 2 during the calcination process. The Ag-Sn/CeO 2 (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/CeO 2 support.
doi:10.5935/0103-5053.20150028 fatcat:nxp5s3aby5farc4gkjhhzgqdnm