Oxygen vacancies-driven nonradical oxidation pathway of catalytic ozonation for efficient water decontamination

Mechanism of catalytic ozonation in different surface acid sites of oxide aqueous suspensions

“…A new band assigned to surface atomic oxygen species appeared at 938 and 901 cm −1 in γ-Al 2 O 3 aqueous dispersions with 16 O 3 and 18 O 3 , respectively. 20,48 In contrast, no surface atomic oxygen was detected on the surface of MCM-41, α-Fe 2 O 3 , α-FeOOH, Fe 3 O 4 , α-MnO 2 and β-MnO 2 in the 16 O 3 or 18 O 3 aqueous solution (data not shown). These results indicated that O 3 was decomposed into surface atomic oxygen when it was adsorbed on the valence-immutable Lewis acid sites of γ-Al 2 O 3 , whereas the O 3 adsorbed on the valence-variable Lewis acid sites of α-FeOOH, Fe 3 O 4 , α-MnO 2 and β-MnO 2 was not converted into surface atomic oxygen.…”

Preparation of catalyst of cobalt‐ and/or iron‐doped strontium zirconate and its performance in removal of m‐cresol using ozone as oxidant

“…The peak at g = 2.003 in the spectrum can be attributed to oxygen vacancies in Sr 2 Co 0.4 Fe 0.6 ZrO 6 , 32 indicating the presence of oxygen vacancies, which will facilitate the catalytic ozonation process. 33 The EPR results of • OH, O 2…”

The roles of the oxygen vacancies caused by the ion doping method in catalytic materials and their applications in advanced oxidation processes

“…126 Lots of researchers have proved excellent adsorption and facilitated decomposition of O 3 by OVs. [127][128][129][130] Liang's group synthesised different catalysts by lattice-doping cobalt into zinc ferrite spinel, altering the amount of doping, and subsequently compared their catalytic properties and morphologies. They found the material exhibited the highest performance when the atomic molar ratio of Fe : Co is 8 : 2, and it is abundant in surface OVs.…”

“…The atomic oxygen that is adsorbed onto the surface can then react with the organic pollutants present. 127 Some researchers have done more indepth research as shown in Fig. 3 134 against H 2 O absorption, decreasing the likelihood of their being filled by H 2 O.…”

“…The atomic oxygen that is adsorbed onto the surface can then react with the organic pollutants present. 127 Some researchers have done more in-depth research as shown in Fig. 3(b).…”