Photoinduced halophenol formation in the presence of iron(III) species or cadmium sulfide

Similar investigations have been performed by adopting cadmium sulfide as a photocatalyst, whose valence band edge potential (EVB°) allows the oxidation of bromide but not chloride. The addition of chloride does not lead to chlorophenols, while bromide causes the formation of bromophenols, thus confirming the possibility of obtaining selective abiotic halogenation of phenol.