Waste metal swarf used in experiment to transform it into a highly efficient catalyst to make hydrogen from water, a discovery that could make hydrogen production more sustainable.
Usually, the process of electrolyzing water for hydrogen production relies on platinum, which is a rare and expensive metal. Fernandes emphasized that industries in the UK solely generate millions of tons of metal waste annually. This process creates a “rain” of platinum atoms on the surface which then assemble into nanoparticles, fitting perfectly into the tiny grooves of the surface.
Researchers spread just 28 micrograms of the precious metal over 1 cm² of the swarf. They successfully devised a laboratory-scale electrolyzer.
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