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      • Efficient Solar Light Photoreduction of CO<sub>2</sub> to Hydrocarbon Fuels via Magnesiothermally Reduced TiO<sub>2</sub> Photocatalyst

        ( Monica Flores ),인수일 한국공업화학회 2019 한국공업화학회 연구논문 초록집 Vol.2019 No.0

        A compelling strategy to combat arising atmospheric CO<sub>2</sub> levels is by photoreduction of CO<sub>2</sub> with sunlight to produce hydrocarbon fuels. However, practical application of such a photocatalytic system requires significant efforts for improved performance and product selectivity. Our research investigated the performance of a newly developed reduced TiO<sub>2</sub>, prepared by a reduction process using Mg in 5% H2/Ar, for photoconversion of CO<sub>2</sub> and water vapor to hydrocarbons, primarily CH<sub>4</sub>. Under simulated solar light irradiation, this Pt-sensitized reduced anatase TiO<sub>2</sub> exhibits a stable performance due to enhanced light absorption, suitable band edge alignment, and efficient photogenerated charge separation which resulted to a threefold increase in the rate of CH<sub>4</sub> production (1.13 μmol g-1h-1) as compared to anatase TiO<sub>2</sub> nanoparticle (0.38 μmol g-1h-1). Our results suggest that this new development can serve as an efficient photocatalyst for solar light CO<sub>2</sub> photoreduction.

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