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<p>The electrochemical oxidation of methanol (MeOH) and ammonia (NH<sub>3</sub>) plays a pivotal role in industrial applications and environmental management. MeOH and NH<sub>3</sub> are considered valuable fuel sources for fuel cell technology, while NH<sub>3</sub> is a notable pollutant in aquatic environments. This research highlights the successful electrochemical oxidation of MeOH and NH<sub>3</sub> in an alkaline medium using a nickel niacin metal–organic framework (NiNA-MOF) embedded in a carbon paste electrode (CPE). The NiNA-MOF/CPE demonstrated remarkable stability, ~ 98.0% current retention for MeOH electrolysis, and an efficiency of ~ 99.0% for NH<sub>3</sub> oxidation. The mechanisms of AOR, MOR, and oxidation of the mixture were elucidated through the identification of reaction products via collecting and derivatization, followed by their comprehensive characterization using gas chromatography-mass spectrometry (GC–MS) and spectrophotometric techniques. These findings underscore the potential of NiNA-MOF as a highly effective catalyst for electrochemical oxidation processes, offering promising applications in energy storage and environmental remediation.</p>

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Electrocatalytic oxidation of methanol and ammonia on Nickel Niacin bio-MOF: a mechanistic investigation

  • 期刊论文

  • 发表日期：

    2025年2月18日

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  • Ali Afruz,
  • Mandana Amiri

摘要

The electrochemical oxidation of methanol (MeOH) and ammonia (NH3) plays a pivotal role in industrial applications and environmental management. MeOH and NH3 are considered valuable fuel sources for fuel cell technology, while NH3 is a notable pollutant in aquatic environments. This research highlights the successful electrochemical oxidation of MeOH and NH3 in an alkaline medium using a nickel niacin metal–organic framework (NiNA-MOF) embedded in a carbon paste electrode (CPE). The NiNA-MOF/CPE demonstrated remarkable stability, ~ 98.0% current retention for MeOH electrolysis, and an efficiency of ~ 99.0% for NH3 oxidation. The mechanisms of AOR, MOR, and oxidation of the mixture were elucidated through the identification of reaction products via collecting and derivatization, followed by their comprehensive characterization using gas chromatography-mass spectrometry (GC–MS) and spectrophotometric techniques. These findings underscore the potential of NiNA-MOF as a highly effective catalyst for electrochemical oxidation processes, offering promising applications in energy storage and environmental remediation.