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Updated: Sep 19, 2025

Electrochemically and Bioelectrochemically Induced Ammonium Recovery
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Published on: January 22, 2015

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酸性介質におけるアモニアカチオン促進CO2の電子還元

Kaige Shi1, John Janisch1, Zhuanghe Ren1

  • 1Department of Physics, University of Central Florida, Orlando, Florida 32816, United States.

Journal of the American Chemical Society
|June 18, 2025
PubMed
まとめ

アンモニアムカチオン (NH4+) は,ナトリウムやカリウムよりも,酸性媒体における二酸化炭素の電解 (CO2RR) を著しく促進する. この進歩は,CO2吸収を安定させ,pHの変化を緩和することによって,CO2RRの活性を増大させます.

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Electrodeposition is a technique used to separate an analyte from interferents by electrochemical processes. Here, the analyte is a metal ion that can be deposited on an electrode immersed in the sample solution. The electrochemical setup consists of an anode and a cathode. When an electric current is applied to the setup, oxidation occurs at the anode. At the cathode, which consists of a large metal surface, metal ions undergo reduction and deposit onto the surface.
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The titration curve of a weak base like ammonia with a strong acid like hydrochloric acid is the mirror image of the titration curve of a weak acid with a strong base.
Using the ICE table and substituting the Kb value, we calculate the initial pH of 50 mL of 0.1 M ammonia to be 11.11. Addition of 25 mL of 0.1 M hydrochloric acid to this solution of ammonia results in a buffer with an equal concentration of ammonia and ammonium ions. The pH of this buffer can be calculated by substituting these...
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Amide reduction requires two equivalents of the reducing agent, acting as a source of hydride ions. As shown in the figure, the reaction is initiated with a nucleophilic attack by the hydride ion at the carbonyl carbon to form a tetrahedral intermediate.
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