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Updated: Mar 15, 2026
Hydrogen Production and Utilization in a Membrane Reactor
Published on: March 10, 2023
Hydrogen production from water using a bis(imino)pyridine molybdenum electrocatalyst
Raja Pal1, Joseph A Laureanti, Thomas L Groy
1School of Molecular Sciences, Arizona State University, Tempe, Arizona 85287, USA. anne.katherine.jones@asu.edu ryan.trovitch@asu.edu.
This study presents a novel molybdenum catalyst for efficient hydrogen production from water and acetonitrile. The catalyst achieves high Faradaic efficiency and a fast rate, offering a promising avenue for sustainable hydrogen generation.
Area of Science:
- Inorganic Chemistry
- Electrochemistry
- Catalysis
Background:
- Hydrogen (H2) production is crucial for clean energy.
- Developing efficient electrocatalysts for H2 evolution is a key challenge.
- Molybdenum complexes are explored for catalytic applications.
Purpose of the Study:
- To investigate the electrocatalytic activity of a novel molybdenum-based complex for H2 production.
- To elucidate the mechanism of H2 evolution mediated by this catalyst.
- To assess the efficiency and rate of the catalytic process.
Main Methods:
- Electrochemical synthesis and characterization of the molybdenum complex [((Ph2PPr)PDI)MoO][PF6]2.
- Electrocatalytic studies in 5.0 M H2O/acetonitrile solution.
- Isolation and characterization of a Mo(ii) oxo intermediate.
Main Results:
- The catalyst produced H2 with 96% Faradaic efficiency at -2.5 V vs. Fc(+/0).
- A high catalytic rate of 55 s(-1) was achieved.
- A Mo(ii) oxo intermediate, ((Ph2PPr)PDI)MoO, was successfully isolated, providing mechanistic insights.
Conclusions:
- The molybdenum complex is a highly efficient electrocatalyst for H2 evolution.
- The isolated Mo(ii) oxo intermediate plays a key role in the catalytic mechanism.
- This work contributes to the understanding of H2 evolution mechanisms and the development of new catalysts.
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