Abstract
The superoxide radical anion O2 - is both an important intermediate in heterogeneous catalytic oxidation and a useful probe for positive charges in ionic solids, such as metal oxides and zeolites. The paper illustrates the main circumstances under which stable superoxide anions are formed at surfaces: (i) direct surface–oxygen electron transfer; (ii) photoinduced electron transfer; (iii) surface intermolecular electron transfer; (iv) decomposition of hydrogen peroxide.
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Anpo, M., Che, M., Fubini, B. et al. Generation of superoxide ions at oxide surfaces. Topics in Catalysis 8, 189–198 (1999). https://doi.org/10.1023/A:1019117328935
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DOI: https://doi.org/10.1023/A:1019117328935