CO oxidation on mesoporous SBA-15 supported CuO–CeO₂catalyst prepared by a surfactant-assisted impregnation method

Co-Supported CeO2Nanoparticles for CO Catalytic Oxidation: Effects of Different Synthesis Methods on Catalytic Performance

“…CO is one of the most common toxic gases and harmful to environment and human health. The elimination of CO and especially the oxidation of CO, a simple and typical reaction in heterogeneous catalysis, has attracted wide attention in recent years due to its academic value and possible applications [9][10][11][12][13]. Progress in nanotechnology provides a precious tool for the study of CO oxidation at the nanoscale.…”

Influence of the Hydrothermal Parameters on the Physicochemical Characteristics of Cu−Ce Oxide Nanostructures

“…Figure 4a presents the spectra for the Ce 3d region. [54,71] Therefore, it is considered that the most dominant state of cerium in the obtained materials is the + 4 oxidation state. Specifically, the peaks u' (903.0 eV) and v' (884.8 eV) are ascribed to Ce 3 + state, which is also evidenced by Raman studies, while the other six peaks are correlated with Ce 4 + state.…”

“…[54,71] Therefore, it is considered that the most dominant state of cerium in the obtained materials is the + 4 oxidation state. [71,73,74] According to the literature, the binding energy of Cu 2p 3/2 ranges at 943-935 eV, while the lower binding energy indicates the presence of Cu + species. The main peaks at 529.7-528.8 eV (O') are attributed to the lattice oxygen of the CeO 2 and CuO phase.…”

“…Specifically, the peaks u' (903.0 eV) and v' (884.8 eV) are ascribed to Ce 3 + state, which is also evidenced by Raman studies, while the other six peaks are correlated with Ce 4 + state. [54,71] Therefore, it is considered that the most dominant state of cerium in the obtained materials is the + 4 oxidation state. [49,55] The O 1s spectra is illustrated in Figure 4b.…”

“…The peaks which are noticed at 932.6 eV (Cu 2p 3/2 ) and 952.8 eV (Cu 2p 1/2 ) along with the shake-up satellite peaks around 937-950 eV, are characteristic for Cu 2 + ions. [71,73,74] According to the literature, the binding energy of Cu 2p 3/2 ranges at 943-935 eV, while the lower binding energy indicates the presence of Cu + species. [35,45,75] In our case, the lower binding energy of Cu 2p 3/2 confirms the presence of Cu + species over the CuCeO x catalysts.…”