Support effects on the structure and catalytic activity of mesoporous Ag/CeO2 catalysts for CO oxidation

Role of the support on the behavior of Ag-based catalysts for NH 3 selective catalytic oxidation (NH 3 -SCO)

“…In comparison with Ag/SiO 2 (385 nm) and Ag/NaY (390 nm) catalysts, the main characteristic surface plasma resonance (SPR) peaks of Ag 0 nanoparticles for Ag/Al 2 O 3 and Ag/TiO 2 samples show a large redshift to 450 nm and 500 nm, respectively. It has been known that the electron in Ag 0 surface can spill out of the classical radius and can be transferred into affinity levels of the support [28][29][30][31][32]. The spill-out of the electrons will lead to a decreased electron density and consequently the redshift of the Mie resonance frequency according to equation [29]:…”

Facile synthesis of Ag@CeO2 core–shell plasmonic photocatalysts with enhanced visible-light photocatalytic performance

“…Most reports on metal core@ceria shell structures are focused on the catalysis in organics oxidation and CO oxidation [33][34][35]40]. However, systematic investigations on photocatalytic activities in water splitting of metal core@ceria shell nanostructures are still limited.…”

Formation of silver active states in Ag/ZSM-5 catalysts for CO oxidation

“…Ag/ZSM-5 catalysts showed high activity and stability in CO oxidation process exceeding the characteristics of Ag/zeolite catalysts presented in literature and tested under comparable conditions [5][6][7][8][9][10][11][12][13][14][18][19][20][21][22][23][24][25][26][27][28]. Almost complete CO conversion was observed at temperatures <100°C.…”

“…The supported silver catalysts can be prepared in different ways, for example, by impregnation, mixing combustion, ion-exchange, grafting after synthesis, and also by precipitation, co-precipitation, incipient wetness impregnation method [18][19][20][21][22][23][24][25][26], etc. Pretreatment temperature is also one of the most important factors influencing the catalytic activity [27,28].…”