β particles induced directional inward migration of oxygen vacancies: Surface oxygen vacancies and interface oxygen vacancies synergistically activate PMS

Durable Electrocatalytic Reduction of Nitrate to Ammonia over Defective Pseudobrookite Fe2TiO5Nanofibers with Abundant Oxygen Vacancies

“…[40] The O 1s spectrum is deconvoluted into three peaks at 529.6 eV, 531.9 eV and 533.0 eV, which are attributed to the lattice oxygen, oxygen vacancy and adsorbed oxygen (Fig- ure 2f). [41] XPS spectra of FTO-H show almost identical results (Figure S7b-d). EDX spectroscopy further reveals the atomic ratio of Fe: Ti is 2.16 for FTO-E and 2.51 for FTO-H, but large amount of oxygen atoms loss in quantity for FTO-E, which indicates the formation of massive Vos in FTO-E (Figure S9).…”

A Lewis acid–base paired InBO3 catalyst: synthesis and high selectivity for isopropanol dehydrogenation

“…In the literature, O ads is favored because it is very likely the catalytic site for the activation of oxidative species. 23,24 Here, the detection of O ads means the existence of a surface oxygen vacancy, 25,26 which results in the presence of exposed In 3+ sites. Accordingly, both NH 3 -TPD and CO 2 -TPD experiments were performed to evaluate the surface acidity and basicity, respectively.…”

Ce–Mn Oxide Nanocomposites for Catalytic Removal of H2S

“…As shown in Figure 4C, the strong electron paramagnetic resonance signals at g = 2.003 over catalysts are mainly associated with unpaired electrons in the oxygen vacancies. 46,47 The signal intensities are in a decreasing order: 50Ce−Mn > 100Ce−Mn > 5Ce−Mn > 10Ce−Mn > 0Ce−Mn, suggesting that the number of oxygen vacancies can be modulated by adjusting the incorporated Ce content. The intense signal over 50Ce−Mn confirms the presence of abundant oxygen vacancies, which induce the formation of active oxygen species for the reaction.…”