Hydrogen produced from water vapour thanks to a solar paint

Hydrogen from water vapour

Hydrogen produced from water vapour thanks to a solar paint

Researchers from RMIT University in Australia have developed a solar paint that can absorb water vapour and split it to generate hydrogen – the cleanest source of energy. The paint contains a newly developed compound that acts like silica gel, which is used in sachets to absorb moisture and keep food, medicines and electronics fresh and dry. But unlike silica gel, the new material, synthetic molybdenum-sulphide, also acts as a semi-conductor and catalyses the splitting of water atoms into hydrogen and oxygen.

RMIT lead researcher Dr Torben Daeneke said: “We found that mixing the compound with titanium oxide particles leads to a sunlight-absorbing paint that produces hydrogen fuel from solar energy and moist air. “Titanium oxide is the white pigment that is already commonly used in wall paint, meaning that the simple addition of the new material can convert a brick wall into energy harvesting and fuel production real estate.

“Our new development has a big range of advantages,” he said. “There’s no need for clean or filtered water to feed the system. Any place that has water vapour in the air, even remote areas far from water, can produce fuel.”

His colleague, Distinguished Professor Kourosh Kalantar-zadeh, said hydrogen was the cleanest source of energy and could be used in fuel cells as well as conventional combustion engines as an alternative to fossil fuels.

Do you want to learn more about emerging technologies to produce hydrogen? Then our latest articles about the subject should be of interest to you. You can access all our articles written about emerging technologies to produce hydrogen here.

Are you a LinkedIn user? Then our LinkedIn weekly newsletter may be what you are looking for. You can subscribe to it here

If you liked it, share it

About the author

Picture of Laurent Meillaud

Laurent Meillaud

Freelance automotive journalist and consultant, author as well, focused on technologies and new trends for more than 30 years, convinced that hydrogen is one of the energies for the future.

Our latest articles