K8Ce2I18O53: a novel potassium cerium(iv) iodate with enhanced visible light driven photocatalytic activity resulting from polar zero dimensional [Ce(IO3)8]4- units.

Hydrothermally grown iodate, K8Ce2I18O53, featuring polar 0D [Ce(IO3)8]4- units, has shown the highest visible light driven (VLD) photocatalytic activity in metal iodates reported before. The enhanced VLD photocatalytic property results from a synergistic effect between the narrow band gap and polar 0D [Ce(IO3)8]4- units, as confirmed using first principles calculations.

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