Enhanced CO oxidation over thermal treated Ag/Cu-BTC

Thermal treatment of Cu-3(BTC)(2) supported Ag has been performed at 250 degrees C and ambient pressure under oxygen atmosphere. Ag/CuxO (x = 1,2) nanoparticles are obtained. The catalyst characterization shows that CuO and Cu2O species are helpful for CO adsorption and Ag plays a key role in the activation of oxygen. The synergy between CuxO and Ag leads to significantly enhanced activity for CO oxidation. In addition, Ag is partially oxidized by oxygen and Ag2O probably acts as one of the active species for CO oxidation. (C) 2013 Elsevier B.V. All rights reserved.