Visible and NIR Light Assistance of the N2 Reduction to NH3 Catalyzed by Cs-promoted Ru Nanoparticles Supported on Strontium Titanate

High Resolution Image Download MS PowerPoint Slide NH 3 production accounts for more than 1% of the total CO 2 emissions and is considered one of the most energy-intensive industrial processes currently ( T > 400 °C and P > 80 bars). The development of atmospheric-pressure N 2 fixation to NH 3 under mild conditions is attracting much attention, especially using additional renewable energy sources. Herein, efficient photothermal NH 3 evolution in continuous flow upon visible and NIR light irradiation at near 1 Sun power using Cs-decorated strontium titanate-supported Ru nanoparticles is reported. Notably, for the optimal photocatalytic composition, a constant NH 3 rate near 3500 μmol NH 3 g catalyst –1 h –1 was achieved for 120 h reactions, being among the highest values reported at atmospheric pressure under 1 Sun irradiation.