Fig. 2: CO2 reduction with H2 catalyzed by metal-doped FeS. | Nature Communications

Fig. 2: CO2 reduction with H2 catalyzed by metal-doped FeS.

From: Iron sulfide-catalyzed gaseous CO2 reduction and prebiotic carbon fixation in terrestrial hot springs

Fig. 2: CO2 reduction with H2 catalyzed by metal-doped FeS.

a Schematic representation of the reaction cell used for the light-mediated thermocatalytic reaction. b Effect of metal doping on FeS catalysis under dark and UV–visible light (300–720 nm) conditions. c Temperature-dependent experiments of CH3OH production from CO2 and H2 over pure FeS and Mn-doped FeS under dark and UV–visible light conditions. d Temperature-dependent experiments of CH3OH production in the presence of water vapor over Mn-doped FeS under dark conditions and with the irradiation of UV–visible light or UV-enhanced light (200–600 nm). The error bars in b–d were generated from a triplicate set of measurements. e The apparent activation energies (\({E}_{{\rm {a}}}\)) over FeS and Mn-doped FeS catalysis with and without UV–visible light irradiation. f In situ diffuse reflectance infrared Fourier transform spectra (DRIFTS) of Mn-doped FeS under dark and UV–visible light conditions at 120 °C. Unless otherwise specified, all metal-doped FeS refers to FeS doped with 10% metal.

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