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- Title
Light‐Induced Redox Looping of a Rhodium/Ce<sub>x</sub>WO<sub>3</sub> Photocatalyst for Highly Active and Robust Dry Reforming of Methane.
- Authors
Yang, Yuying; Chai, Zhigang; Qin, Xuetao; Zhang, Zhenzhen; Muhetaer, Aidaer; Wang, Cong; Huang, Hanlin; Yang, Chaoran; Ma, Ding; Li, Qi; Xu, Dongsheng
- Abstract
Dry reforming of methane (DRM) has provided an effective avenue to convert two greenhouse gases, CH4 and CO2, into syngas. Here, we design a DRM photocatalyst Rh/CexWO3 that invokes both photothermal and photoelectric processes, which overcomes the thermodynamic limitation of DRM under conventional conditions. In contrast to plasmonic or UV‐response photocatalysts, our photocatalyst produces a superior light‐to‐chemical energy efficiency (LTCEE) of 4.65 % with a moderate light intensity. We propose that a light‐induced metal‐to‐metal charge transfer plays a crucial role in the DRM reaction, which induces a redox looping between Ce to W species to lower the activation energy. Quantum mechanical studies reveal that a high oxygen mobility of CexWO3, accompanied with the formation of oxo‐bridge species, results in a substantial elimination of deposited C species during the reaction. Our catalyst design strategy could offer a promising energy‐efficient industrial process for DRM.
- Subjects
STEAM reforming; OXIDATION-reduction reaction; METHANE; ACTIVATION energy; MANUFACTURING processes; GREENHOUSE gases; RHODIUM catalysts; CHARGE transfer
- Publication
Angewandte Chemie, 2022, Vol 134, Issue 21, p1
- ISSN
0044-8249
- Publication type
Academic Journal
- DOI
10.1002/ange.202200567