Fig. 2: Catalytic measurements for CO2 hydrogenation.
From: A nickel gallium oxide chlorophyll mimic for green methanol synthesis

a CO and CH3OH production rates of as a function of reaction temperature, with and without light (white LED light, catalyst amount: 15 mg, light intensity: 1.87 W cm-2, pressure: 0.7 MPa). b Stability test for NG under light off and on conditions. c–f Different LED light irradiation intensities (main peak at 365 nm, 460 nm, 525 nm, and 625 nm; catalyst amount: 7.88 mg) for CO and CH3OH production and selectivity of NG. g Total external quantum yield (EQE) of NG for CO2 hydrogenation with different levels of light irradiation. h Absorption spectrum (solid line) and EQE results obtained under illumination at 0.83 and 1.26 W cm-2. Mean values were derived from quadruplicate measurements and their standard deviation shown as error bars.