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In-situ exsolution ...
In-situ exsolution of FeCo nanoparticles over perovskite oxides for efficient electrocatalytic nitrate reduction to ammonia via localized electrons
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- Hu, Peiji (author)
- University of Electronic Science and Technology of China
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- Zhang, Xiaoqiang (author)
- Lund University,Lunds universitet,Värmeöverföring,Institutionen för energivetenskaper,Institutioner vid LTH,Lunds Tekniska Högskola,Heat Transfer,Department of Energy Sciences,Departments at LTH,Faculty of Engineering, LTH
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- Xu, Min (author)
- Tsinghua University
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- Lv, Yaxin (author)
- University of Electronic Science and Technology of China
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- Guo, Haoran (author)
- Xiangtan University
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- Chen, Jun Song (author)
- University of Electronic Science and Technology of China
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Ye, Xiaoyu (author)
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Xian, Haohong (author)
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Sun, Xuping (author)
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- Li, Tingshuai (author)
- University of Electronic Science and Technology of China
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(creator_code:org_t)
- 2024
- 2024
- English.
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In: Applied Catalysis B: Environmental. - 0926-3373. ; 357
- Related links:
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http://dx.doi.org/10...
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https://lup.lub.lu.s...
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https://doi.org/10.1...
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Abstract
Subject headings
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- FeCo nanoparticles exsolved from Co-doped Sm0.9FeO3 nanofibers with abundant oxygen vacancies (Vos) are proposed as an efficient electrocatalyst to promote nitrate reduction reaction (NITRR). Such catalyst achieves a maximum Faradaic efficiency (FE) of 90.3 % and a large NH3 yield of 17.2 mg h−1 mg−1cat. at a negatively shifted potential of −0.9 V in 0.1 M PBS with 0.1 M NaNO3, and the alloy nanoparticles socketed into nanofibers remain extremely stable during long-term electrolysis. The reaction pathway favoring the formation of NH2OH is uncovered by in situ electrochemical tests and theoretical calculations reveal the exsolution of FeCo alloy combined with the generation of Vos enhances nitrate adsorption and lowers energy increase of the potential determining step. Finite-element simulations unveil the applied current and charges are localized on the alloys along the nanofiber, which confirms the exsolved FeCo nanoparticles are the main active sites for NITRR.
Subject headings
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Keyword
- DFT calculations
- FeCo alloy
- In-situ exsolution
- Nitrate reduction to ammonia
- Perovskite
Publication and Content Type
- art (subject category)
- ref (subject category)
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To the university's database
- By the author/editor
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Hu, Peiji
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Zhang, Xiaoqiang
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Xu, Min
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Lv, Yaxin
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Guo, Haoran
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Chen, Jun Song
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show more...
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Ye, Xiaoyu
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Xian, Haohong
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Sun, Xuping
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Li, Tingshuai
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Materials Chemis ...
- Articles in the publication
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Applied Catalysi ...
- By the university
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Lund University