WFRF:(Yang Zhenzhen)
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Light-Induced Redox Looping of a Rhodium/CexWO3 Photocatalyst for Highly Active and Robust Dry Reforming of Methane
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- Yang, Yuying (författare)
- Peking Univ, Coll Chem & Mol Engn, Beijng Natl Lab Mol Sci, State Key Lab Struct Chem Unstable Species, Beijing 100871, Peoples R China.
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- Chai, Zhigang (författare)
- Uppsala universitet,Strukturkemi
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- Qin, Xuetao (författare)
- Peking Univ, Coll Chem & Mol Engn, Beijng Natl Lab Mol Sci, State Key Lab Struct Chem Unstable Species, Beijing 100871, Peoples R China.
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- Peking Univ, Coll Chem & Mol Engn, Beijng Natl Lab Mol Sci, State Key Lab Struct Chem Unstable Species, Beijing 100871, Peoples R China Strukturkemi (creator_code:org_t)
- 2022-03-23
- 2022
- Engelska.
- Ingår i: Angewandte Chemie International Edition. - : John Wiley & Sons. - 1433-7851 .- 1521-3773. ; 61:21
- Tidskriftsartikel (refereegranskat)
Abstract
Ämnesord
Stäng
- 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.
Ämnesord
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
Nyckelord
- Dry Reforming of Methane
- Metal-to-Metal Charge Transfer
- Oxygen Migration
- Photocatalysis
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- Yang, Yuying
- Chai, Zhigang
- Qin, Xuetao
- Zhang, Zhenzhen
- Muhetaer, Aidaer
- Wang, Cong
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- Huang, Hanlin
- Yang, Chaoran
- Ma, Ding
- Li, Qi
- Xu, Dongsheng
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