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ESR studies of photoinduced centers on weakly reduced anatase

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Abstract

The paramagnetic centers of reduced anatase\(\boxed{O^ - }\) (g1=1.999, g2=1.984, g3=1.979) and\(\boxed{O_3^ - }\) (g1=2.046, g2=2.008), assigned to the stabilization of photoinduced holes near anion vacancies, have been studied. For the reduced oxide a new type of O2 photoadsorption at h ν>1 eV due to the generation of only electron surface centers has been discovered.

Abstract

Изучены свойства парамагнитных центров, специфичных для восстановленного анатаза:\(\boxed{O^ - }\) (g1=1,999, g2=1,984, g3=1,979) и\(\boxed{O_3^ - }\) (g1=2,046, g2=2,008), связанных со стабилизацией фотоиндуцированных дырок вблизи анионных вакансий. На восстановленном окисле обнаружен новый тип фотоадсорбции O2 при hν>1 эв, связанный с генерацией на поверхности только электронных центров.

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References

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Volodin, A.M., Cherkashin, A.E. & Zakharenko, V.S. ESR studies of photoinduced centers on weakly reduced anatase. React Kinet Catal Lett 11, 221–224 (1979). https://doi.org/10.1007/BF02067829

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  • DOI: https://doi.org/10.1007/BF02067829

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