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Related Experiment Video

Updated: Apr 23, 2026

Simple Methods for the Preparation of Non-noble Metal Bulk-electrodes for Electrocatalytic Applications
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An iron-based molecular cathode for alkaline electrocatalytic hydrogen evolution.

Bharath M1, Srijit Sen1, Bhupendra P Mali1

  • 1Department of Chemistry, Ashoka University Sonipat Haryana-131029 India munmun.ghosh@ashoka.edu.in.

RSC Advances
|April 22, 2026
PubMed
Summary
This summary is machine-generated.

Researchers developed a stable iron-based catalyst for the hydrogen evolution reaction (HER) using simple electroanalytical methods. The modified electrodes efficiently produce hydrogen in alkaline solutions with low energy input.

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Area of Science:

  • Electrochemistry
  • Materials Science
  • Catalysis

Background:

  • Molecular iron complexes offer tunable properties for catalysis.
  • Heterogenization of molecular catalysts can improve stability and recyclability.
  • Efficient hydrogen evolution reaction (HER) catalysts are crucial for clean energy technologies.

Purpose of the Study:

  • To heterogenize a molecular iron complex with a p-chloropyridine moiety.
  • To evaluate the electrocatalytic performance of the modified electrode for HER.
  • To assess the stability of the electrocatalyst under operational conditions.

Main Methods:

  • Heterogenization of a molecular iron complex via electroanalytical techniques.
  • Electrochemical characterization of the modified electrode.
  • Hydrogen evolution reaction (HER) testing in alkaline aqueous solutions.
  • Long-term electrolysis stability tests.

Main Results:

  • Successfully heterogenized the molecular iron complex onto electrode surfaces.
  • The modified electrodes exhibited significant electrocatalytic activity for HER.
  • Achieved low overpotentials of 0.35 V versus RHE.
  • Demonstrated excellent stability, operating for over 150 hours under electrolysis.

Conclusions:

  • The heterogenized iron complex is an effective electrocatalyst for HER.
  • Simple electroanalytical techniques provide a viable route for catalyst preparation.
  • The catalyst shows promise for applications in alkaline hydrogen production.