Carbon nitride materials have recently attracted vast interest in the field of solar water oxidation and carbon dioxide reduction. However, the underlying mechanisms are not known. Based on ab initio calculations, a novel biphotonic artificial photosynthesis cycle is proposed. Upon excitation by the first photon, the chromophore abstracts an H-atom from a water molecule, generating an OH radical and the reduced chromophore. Upon absorption of a second photon, the reduced chromophore transfers the excess H-atom to a carbon dioxide molecule, reducing it to the formyl radical.
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Carbon nitride materials have recently attracted vast interest in the field of solar water oxidation and carbon dioxide reduction. However, the underlying mechanisms are not known. Based on ab initio calculations, a novel biphotonic artificial photosynthesis cycle is proposed. Upon excitation by the first photon, the chromophore abstracts an H-atom from a water molecule, generating an OH radical and the reduced chromophore. Upon absorption of a second photon, the reduced chromophore transfers th...
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