Continuous-Flow Sunlight-Powered CO 2 Methanation Catalyzed by γ-Al 2 O 3 -Supported Plasmonic Ru Nanorods

Plasmonic CO 2 methanation using γ-Al 2 O 3 -supported Ru nanorods was carried out under continuous-flow conditions without conventional heating, using mildly concentrated sunlight as the sole and sustainable energy source (AM 1.5, irradiance 5.5–14.4 kW·m −2 = 5.5–14.4 suns). Under 12.5 suns, a CO 2 conversion exceeding 97% was achieved with complete selectivity towards CH 4 and a stable production rate (261.9 <semantics> mmol · g Ru − 1 · h − 1 </semantics> ) for at least 12 h. The CH 4 production rate showed an exponential increase with increasing light intensity, suggesting tha... Mehr ...