Production of Methanol from Aqueous CO₂ by Using Co₃O₄ Nanostructures as Photocatalysts

Figure 5

(a) Chromatograms of the gas obtained after visible-light irradiation with Co₃O₄-NPs and Co₃O₄-P-NS as catalysts; the blue trace corresponds to the chromatogram of the methanol reference; (b) general mechanism explaining the photoreduction of CO₂ to MeOH catalysed by both types of Co₃O₄ nanostructures.

(a)

(b)