| DOI | Resolve DOI: https://doi.org/10.1021/acsenergylett.9b00699 |
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| Author | Search for: Yao, Yao; Search for: Wang, Haijiang1; Search for: Yuan, Xiao-Zi1; Search for: Li, Hui1; Search for: Shao, MinhuaORCID identifier: https://orcid.org/0000-0003-4496-0057 |
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| Affiliation | - National Research Council of Canada. Energy, Mining and Environment
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| Format | Text, Article |
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| Abstract | Ruthenium is a good catalyst for ammonia synthesis in the Haber–Bosch process and a promising electrocatalyst for electrochemical N2 reduction reaction (NRR). However, the NRR pathway on Ru is unclear because of the lack of information on reaction intermediates. Surface-enhanced infrared absorption spectroscopy combined with electrochemical measurements is employed to study the NRR mechanisms on Ru thin film. During the nitrogen reduction, the *N₂Hₓ (0 ≤ x ≤ 2) was detected with the band of N=N stretching (∼1940 cm⁻¹) at potentials below 0.2 V in an N₂-satureated HClO₄ solution. The coverage of *N₂Hₓ on the Ru surface was significantly increased with the potential decreasing from 0.2 to −0.4 V. The formed *N₂Hₓ species could be oxidized at potentials higher than −0.1 V. In an N₂-satureated KOH solution, no N-related infrared absorption band was observed on Ru surfaces, indicating that the adsorption of nitrogen molecules on Ru surfaces is very weak. |
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| Publication date | 2019-05-16 |
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| Publisher | American Chemical Society |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 2afce02a-a776-49b2-bcf7-ca0f09279644 |
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| Record created | 2021-03-02 |
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| Record modified | 2021-03-02 |
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