Synthesis of Carbon-Supported Molybdenum Oxide from Different Carbon Sources as a Catalyst for Hydrogen Evolution Reaction (HER)
For the last decade, the world has witnessed environmental hazards that stem from our dependency on fossil fuel as the primary source of energy. With the world’s growing population and the limitation of fossil fuel sources, there is a need for a transition from non-renewable energy toward more sustainable one. Water electrolysis has been considered a promising approach to a clean sustainable hydrogen fuel. However, hydrogen production is costly due to the use of noble metal such as platinum (Pt) as a catalyst. In the following study, a non-precious metal electrocatalyst molybdenum trioxide (MoO3) supported on carbon from three different sources: mesoporous carbon (MC), activated carbon (AC), and graphite (G) was synthesized via calcination of ammonium molybdate and carbon. Among the three types of carbon, molybdenum oxide supported on activated carbon (MoO3-AC) was able to drive hydrogen evolution reaction (HER) with the lowest overpotential; however, its performance is still not satisfactory when compared to that of Pt. Further research can be improved upon this study to create a molybdenum-based catalyst that fulfills the economic challenge of large-scale hydrogen economy.
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