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Updated: Jul 26, 2025
CO2 Photoreduction to CH4 Performance Under Concentrating Solar Light
Published on: June 12, 2019
Highly Efficient Solar-Driven Dry Reforming of Methane on a Rh/LaNiO3 Catalyst through a Light-induced Metal-To-Metal
Yuan Yao1,2, Ben Li1, Xiaowen Gao1
1Beijng National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China.
Abstract:
As an energy-saving and green method, solar-driven dry reforming of methane (DRM) is expected to introduce new activation processes and prevent sintering and coking of the catalysts. However, it still lacks an efficient way to coordinate the regulation of activation of reactants and lattice oxygen migration. In this study, Rh/LaNiO3 is designed as a highly efficient photothermal catalyst for solar-driven DRM, which performs production rates of 452.3 mmol h-1 gRh -1 for H2 and 527.6 mmol h-1 gRh -1 for CO2 under a light intensity of 1.5 W cm-2 , with an excellent stability. Moreover, a remarkable light-to-chemical energy efficiency (LTCEE) of 10.72% is achieved under a light intensity of 3.5 W cm-2 . The characterizations of surface electronic and chemical properties and theoretical analysis demonstrate that strong adsorption for CH4 and CO2 , light-induced metal-to-metal charge transfer (MMCT) process and high oxygen mobility together bring Rh/LaNiO3 excellent performance for solar-driven DRM.
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