Congratulations to Dr. Haoyang Jiang on Publishing a Research Article in Nano Letters

Accelerating Reverse Water Gas Shift Reaction through Synergistic CO₂ and H₂ Activation on Ru–Fe–(V_O-in-CeO₂) Ternary Catalytic Centers

The reverse water gas shift (RWGS) reaction shows promise for converting CO₂ emissions to chemical feedstocks using renewable H₂. However, achieving high selectivity and activity at low temperatures remains challenging due to the thermodynamically more favorable CO₂ methanation reaction. Here we develop a robust Ru_0.0025Ce_0.7Fe_0.3O_2−δ solid-solution nanorod catalyst featuring a ternary Fe–Ru–oxygen vacancy (V_O) center, overcoming limitations in intermediate adsorption and dissociation on single-component catalysts. Incorporating a trace amount of Ru (0.25 at. %) into Ce_0.7Fe_0.3O_2−δ markedly enhances CO₂ and H₂ dissociation and H₂O formation, while the primary Ce_0.7Fe_0.3O_2−δ solid-solution component facilitates CO desorption, lowering the RWGS onset temperature to ∼200 °C. Experimental and computational analyses verify improved kinetics and stable performance with Ru_0.0025Ce_0.7Fe_0.3O_2−δ, yielding a CO production rate of 326 mmol gcat^–1 h^–1, ∼100% selectivity, and a 21% yield, approaching the thermodynamic limit within a 5 min batch reaction at ∼450 °C surface temperature under 300 W xenon lamp illumination.

The related research findings were published in Nano Letters under the title "Accelerating Reverse Water Gas Shift Reaction through Synergistic CO₂ and H₂ Activation on Ru–Fe–(V_O-in-CeO₂) Ternary Catalytic Centers".

Article link: https://pubs.acs.org/doi/full/10.1021/acs.nanolett.4c06427