Generating hydrogen from water using yeastDate: 28 April 2020 Tags: Energy
Scientists have developed a new low-cost catalyst synthesis method that can efficiently decompose water into oxygen and hydrogen using waste-yeast biomass.
Yeast biomass-derived materials can help develop efficient, eco-friendly and economic catalysts to improve the sustainability of hydrogen production.
Hydrogen is the cleanest primary energy source on earth. One way of producing environmentally-friendly hydrogen is via the electrolysis of water. However, such method needed noble-metal-based catalysts, such as platinum (Pt) for the HER and Iridium (Ir) for the OER. However, these catalysts are typically rare, expensive, and less durable.
Scientists focused on the squander yeast biomass, as catalyst material that will improve oxygen and hydrogen generation, while replacing the noble metal catalysts, for example, Pt or Ir.
As yeast is a living organism, it is wealthy in substances, for example, carbon (C), phosphorus (P), sulphur (S), and nitrogen (N).
In the study, the research team has created two catalysts that promote the generation of both hydrogen and oxygen, using waste yeast as catalyst support.
They reported hydrogen and oxygen production in 1 M potassium hydroxide using ruthenium single atoms (RuSAs) along with Ru nanoparticles (RuNPs) embedded in MHC (RuSAs + RuNPs@MHC) as a cathode and magnetite (Fe3O4) supported on MHC (Fe3O4@MHC) as an anode.
Compared to coal and oil, waste yeast is eco-friendly, inexpensive, and readily available biomass, and the results of the study suggest a new application of waste yeast biomass.