Electrosynthesis of Nitrate via the Oxidation of Nitrogen on Tensile‐Strained Palladium Porous Nanosheets

Nitrate is one of the essential raw ingredients in agriculture and industry. The electrochemical nitrogen oxidation reaction (NOR) is promising to replace the conventional nitrate synthesis industry with high energy consumption and greenhouse gas emission. Here, tensile‐strained palladium porous nan...

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Bibliographic Details
Published in:Angewandte Chemie International Edition 2021-02, Vol.60 (9), p.4474-4478
Main Authors: Han, Shuhe, Wang, Changhong, Wang, Yuting, Yu, Yifu, Zhang, Bin
Format: Article
Language:English
Subjects:
electrocatalysis
Electrochemistry
Energy consumption
Farm buildings
Greenhouse gases
Nanosheets
Nitrates
Nitrogen
nitrogen oxidation reaction
Oxidation
Palladium
Pd nanosheets
Tensile strain
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Summary:Nitrate is one of the essential raw ingredients in agriculture and industry. The electrochemical nitrogen oxidation reaction (NOR) is promising to replace the conventional nitrate synthesis industry with high energy consumption and greenhouse gas emission. Here, tensile‐strained palladium porous nanosheets (Pd‐s PNSs) were prepared. They exhibited enhanced activity for electrochemical NOR at ambient conditions, greatly outperforming Pd nanosheets. 15N isotope labeling experiments proved that nitrate originated from nitrogen oxidation. Combining electrochemical in situ Raman and FTIR spectroscopy with density functional calculations, it was revealed that the tensile strain could facilitate the formation of NOR active species of PdO2, leading to high activity. Tensile‐strained palladium porous nanosheets exhibited enhanced activity for nitrogen electrooxidation to nitrate at ambient conditions. 15N isotope labeling experiments showed that nitrate originated from nitrogen electrooxidation. Electrochemical in situ characterizations and theoretical simulation revealed that the tensile strain could facilitate the formation of PdO2 active species and lead to high activity.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.202014017