Highly Active Hydrogen‐rich Photothermal Reverse Water Gas Shift Reaction on Ni/LaInO3 Perovskite Catalysts with Near‐unity Selectivity
Ni/LaInO3 was designed to obtain an efficient photothermal CO2 conversion with a high CO yield rate (1314 mmol gNi −1 h−1) and ≈100 % selectivity, where LaInO3 was enriched extensive oxygen vacancies to roundly adsorbing CO2 and the strong interaction with Ni endowed the catalysts with powerful H2 activity. In situ characterizations demonstrated a COOH* pathway and the photoinduced charge transfer process to reduce the reaction active energy.
Photo-assisted reverse water gas shift (RWGS) reaction is regarded green and promising in controlling the reaction gas ratio in Fischer Tropsch synthesis. But it is inclined to produce more byproducts in high H2 concentration condition. Herein, LaInO3 loaded with Ni-nanoparticles (Ni NPs) was designed to obtain an efficient photothermal RWGS reaction rate, where LaInO3 was enriched with oxygen vacancies to roundly adsorbing CO2 and the strong interaction with Ni NPs endowed the catalysts with powerful H2 activity. The optimized catalyst performed a large CO yield rate (1314 mmol gNi −1 h−1) and ≈100 % selectivity. In situ characterizations demonstrated a COOH* pathway of the reaction and photoinduced charge transfer process for reducing the RWGS reaction active energy. Our work provides valuable insights on the construction of catalysts concerning products selectivity and photoelectronic activating mechanism on CO2 hydrogenation.Zum Volltext
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