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[½»Á÷] TiO2ºÍZnO¹â´ß»¯½µ½â1,2-¶þ¼×Ñõ»ù±½Öг¬ÑõºÍË«ÑõË®µÄ×÷ÓÃ

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The formation of superoxide at the surface of band-gap irradiated semiconductor oxides
is well-documented [21-24] and accordingly the essential role of dioxygen is assigned
to the electron-scavenging properties of this molecule.
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Obviously superoxide cannot accumulate indefinitely. If it gives
backs its electron to the semiconductor or a hydroxyl radical supposed to be
formed by water oxidation, its role would be detrimental for the photocatalytic
degradation of the pollutant.
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