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Complete Photocatalytic Reduction of CO2 to Methane by H2 under Solar Light Irradiation

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journal contribution
posted on 14.05.2014, 00:00 by Francesc Sastre, Alberto V. Puga, Lichen Liu, Avelino Corma, Hermenegildo García
Nickel supported on silica–alumina is an efficient and reusable photocatalyst for the reduction of CO2 to methane by H2, reaching selectivity above 95% at CO2 conversion over 90%. Although NiO behaves similarly, it undergoes a gradual deactivation upon reuse. About 26% of the photocatalytic activity of Ni/silica–alumina under solar light derives from the visible light photoresponse.