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Co-Doped Fe3S4Nanof...
Co-Doped Fe3S4Nanoflowers for Boosting Electrocatalytic Nitrogen Fixation to Ammonia under Mild Conditions
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- Chen, Xue (författare)
- School of Physics and Physical Engineering, Qufu Normal University, Qufu 273165, China
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- Yin, Hongfei (författare)
- School of Physics and Physical Engineering, Qufu Normal University, Qufu 273165, China
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- Yang, Xiaoyong (författare)
- KTH,Materialvetenskap,State Key Laboratory of Environment-friendly Energy Materials, Southwest University of Science and Technology, Mianyang 621010, China; Department of Materials Science and Engineering, KTH Royal Institute of Technology, Stockholm SE-100 44, Sweden
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- Zhang, Weining (författare)
- School of Physics and Physical Engineering, Qufu Normal University, Qufu 273165, China
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- Xiao, Dongdong (författare)
- Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
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- Lu, Zhen (författare)
- Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
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Zhang, Yongzheng (författare)
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- Zhang, Ping (författare)
- School of Physics and Physical Engineering, Qufu Normal University, Qufu 273165, China
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(creator_code:org_t)
- 2022-11-28
- 2022
- Engelska.
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Ingår i: Inorganic Chemistry. - : American Chemical Society. - 0020-1669 .- 1520-510X. ; 61:49, s. 20123-20132
- Relaterad länk:
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https://api.elsevier...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Compared with the Haber Bosch process, the electrochemical nitrogen reduction reaction (NRR) under mild conditions provides an alternative and promising route for ammonia synthesis due to its green and sustainable features. However, the great energy barrier to break the stable NN bond hinders the practical application of NRR. Though Fe is the only common metal element in all biological nitrogenases in nature, there is still a lack of study on developing highly efficient and low-cost Fe-based catalysts for N2fixation. Herein, Co-doped Fe3S4nanoflowers were fabricated as the intended catalyst for NRR. The results indicate that 4% Co-doped Fe3S4nanoflowers achieve a high Faradaic efficiency of 17% and a NH3yield rate of 37.5 μg·h-1·mg-1cat.at-0.55 V versus RHE potential in 0.1 M HCl, which is superior to most Fe-based catalysts. The introduction of Co atoms can not only shift the partial density states of Fe3S4toward the Fermi level but also serve as new active centers to promote N2absorption, lowering the energy barrier of the potential determination step to accelerate the catalytic process. This work paves a pathway of the morphology and doping engineering for Fe-based electrocatalysts to enhance ammonia synthesis.
Ämnesord
- NATURVETENSKAP -- Kemi -- Oorganisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Inorganic Chemistry (hsv//eng)
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