Abstract:We have investigated the photochemical reduction of CO 2 in aqueous solution to form C 1 products using a variety of oxide semiconductors and near UV light. and no unequivocal evidence for formation of the other products.The quantum efficiencies of TiO 2 and SrTiO 3 for forming formate and acetate from CO 2 are estimated to be 0.1-0.2% or less. The spectral properties of the unmodified oxides (TiO 2 , SrTiO3) restricts their use of solar irradiation to about 10% of the available near UV and visible spectrum, t… Show more
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