{"id":46464,"date":"2024-04-17T12:01:45","date_gmt":"2024-04-17T11:01:45","guid":{"rendered":"https:\/\/www.innovationnewsnetwork.com\/?p=46464"},"modified":"2024-04-17T12:01:45","modified_gmt":"2024-04-17T11:01:45","slug":"hydrogen-production-made-more-sustainable-with-metal-waste","status":"publish","type":"post","link":"https:\/\/www.innovationnewsnetwork.com\/hydrogen-production-made-more-sustainable-with-metal-waste\/46464\/","title":{"rendered":"Hydrogen production made more sustainable with metal waste"},"content":{"rendered":"

A team of scientists from the University of Nottingham\u2019s School of Chemistry and Faculty of Engineering have found a way to facilitate sustainable hydrogen production from metal waste.<\/h2>\n

In new research, the team found that the surface of swarf, a byproduct of the metal machinery industry, is textured with tiny grooves and steps on a nanoscale level.<\/p>\n

These textures can anchor atoms of platinum or cobalt. This leads to an efficient electrocatalyst that can make hydrogen<\/a> more sustainable by splitting water into hydrogen and oxygen.<\/p>\n

The research is published in the Journal of Materials Chemistry A <\/em><\/a>of the Royal Society of Chemistry.<\/p>\n

Electrolysis is a promising pathway for hydrogen production<\/h3>\n

Hydrogen is a clean fuel that can be used to generate heat or power vehicles.<\/p>\n

The only byproduct of its combustion is water vapour.<\/p>\n

However, most hydrogen production methods require fossil fuel feedstock.<\/p>\n

Electrolysis of water is one of the most promising methods for hydrogen production because it only needs water and electricity.<\/p>\n

The challenge with water electrolysis<\/h3>\n

The industry is facing a challenge with water electrolysis. This is because it requires expensive elements like platinum to catalyse the water splitting.<\/p>\n

As demand rises and prices increase, there is an urgent need for alternative electrocatalyst materials to produce hydrogen from water.<\/p>\n

Dr Jesum Alves Fernandes from the School of Chemistry, University of Nottingham, who led the research team, said: \u201cIndustries in the UK alone generate millions of tonnes of metal waste annually. By using a scanning electron microscope, we were able to inspect the seemingly smooth surfaces of the stainless steel, titanium, or nickel alloy swarf.<\/p>\n

\u201cTo our astonishment, we discovered that the surfaces had grooves and ridges that were only tens of nanometres wide. We realised that this nanotextured surface could present a unique opportunity for the fabrication of electrocatalysts.\u201d<\/p>\n

Scaling up the technology<\/h3>\n

The team used magnetron sputtering to create a platinum atom rain on the swarf\u2019s surface. The atoms come together into nanoparticles that fit into the nanoscale grooves.<\/p>\n

Professor Andrei Khlobystov, School of Chemistry, said: \u201cOur unique technology developed at Nottingham, which involves atom-by-atom growth of platinum particles on nanotextured surfaces, has solved two major challenges.<\/p>\n

\u201cFirstly, it enables the production of green hydrogen using the least amount of precious metal possible, and secondly, it upcycles metal waste from the aerospace industry, all in a single process.\u201d<\/p>\n

The group will partner with AqSorption Ltd, a Nottingham-based company specialising in electrolyser design and fabrication, to scale up their technology.<\/p>\n

The new work represents a step forward in reducing reliance on expensive metals for hydrogen production.<\/p>\n","protected":false},"excerpt":{"rendered":"

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