The α-FeOOH→α-Fe2O3transition and the origin of adsorbed oxygen on iron oxides

Abstract
It has been found that an i.r. band observable at 1140 cm–1 on goethite, which undergoes several reversible splittings and shifts on dehydration of the sample, is the precursor of similar bands previously observed on haematite and assigned to adsorbed oxygen.

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