1. RuCo/ZrO 2 Tandem Catalysts with Photothermal Confinement Effect for Enhanced CO 2 Methanation.
- Author
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Yang F, Liu X, Xing C, Chen Z, Zhao L, Liu X, Gao W, Zhu L, Liu H, and Zhou W
- Abstract
Photothermal CO
2 methanation reaction represents a promising strategy for addressing CO2 -related environmental issues. The presence of efficient tandem catalytic sites with a localized high-temperature is an effective pathway to enhance the performance of CO2 methanation. Here the bimetallic RuCo nanoparticles anchored on ZrO2 fiber cotton (RuCo/ZrO2 ) as a photothermal catalyst for CO2 methanation are prepared. A significant photothermal CO2 methanation performance with optimal CH4 selectivity (99%) and rate (169.93 mmol gcat -1 h-1 ) is achieved. The photothermal energy of the RuCo bimetallic nanoparticles, confined by the infrared insulation and low thermal conductivity of the ZrO2 fiber cotton (ZrO2 FC), provides a localized high-temperature. In situ spectroscopic experiments on RuCo/ZrO2 , Ru/ZrO2 , and Co/ZrO2 indicate that the construction of tandem catalytic sites, where the Co site favors CO2 conversion to CO while incorporating Ru enhances CO* adsorption for subsequent hydrogenation, results in a higher selectivity toward CH4 . This work opens a new insight into designing tandem catalysts with a photothermal confinement effect in CO2 methanation reaction., (© 2024 The Author(s). Advanced Science published by Wiley‐VCH GmbH.)- Published
- 2024
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