Au/Co promoted CeO₂ catalysts for formaldehyde total oxidation at ambient temperature: role of oxygen vacancies

Abstract

Cobalt enables formation of additional oxygen vacancies in Au/Co–CeO2 and significantly boosts the ambient oxidation of formaldehyde.

Transformations of Biomass, Its Derivatives, and Downstream Chemicals over Ceria Catalysts

“…The electron transferred from Ru 0 species to CeO 2 through interfacial Ru–O–Ce structure, resulting in more Ce 4+ ions being reduced to Ce 3+ species, consistent with results reported by An, Wang, Guo, and Aitbekova . Besides Ru NPs, metal species like Au, Pt, Pd, Ag, and others can also form strong interaction with CeO 2 , thereby enhancing the Vö concentration on CeO 2 surface. ,− …”

The water splitting cycle for hydrogen production at photo-induced oxygen vacancies using solar energy: experiments and DFT calculation on pure and metal-doped CeO2

“…In addition, a broad peak at t ∼693 cm in the Co doped sample can be assigned to the presence of Co 3 O 4 . 59 Given the limitations of material characterization techniques, we also calculated the formation energy of the surface V O (E f ) in different doping systems by DFT using rst-principles. There are two types of O atom sites at the surface, named O surface (O sur ) and O sub-surface (O sub ) respectively, as shown in Fig.…”

Progress of Catalytic Oxidation of Formaldehyde over Manganese Oxides

“…In general, abundant surface adsorbed active oxygen species favor the higher catalytic activity. The surface active oxygen species are often detected by X‐ray photoelectron spectroscopy (XPS), time‐of‐flight secondary ion mass spectrometry (ToF‐SIMS) and infrared spectrometry (IR), HCHO‐TPD and so on …”

“…In the thermal catalytic oxidation, the supported noble metal (e. g.: Pt, Pd, Au, etc.) and metal oxide (e. g.: CeO 2 , MnO 2 , Cr 2 O 3 , TiO 2 , Co 3 O 4 , etc …”