Researchers at Oregon State University have developed a family of metal-organic frameworks (MOFs) that produce hydrogen from water under light – without an added platinum or other metal co-catalyst. The study, published in the Journal of the American Chemical Society in September 2026, puts the sulphur-containing organic linker at the centre of the reaction rather than the metal. It is an elegant design idea. It is also, as so often with solar hydrogen, still a laboratory result with no price per kilogram attached.

What the OSU team built

MOFs are crystalline, porous materials made of metal ions held together by organic “linker” molecules. Their structure can be tuned almost at will: according to lead author Kyriakos Stylianou of the OSU College of Science, chemists have synthesised nearly 100,000 different MOFs and predicted the properties of roughly another half a million. The material class won the 2025 Nobel Prize in Chemistry for Susumu Kitagawa, Richard Robson and Omar M. Yaghi.

The new family, named BVR-19, combines divalent metal ions – magnesium, manganese, copper, zinc or cadmium – with the amino acid L-cystine as the linker. According to the paper’s abstract, the zinc version, BVR-19-Zn, is by far the most active. The reason lies in the linker: L-cystine contains a sulphur–sulphur (disulfide) bridge that breaks transiently when the material is illuminated, creating a thiyl radical and a thiolate anion. This pair separates the charges and drives hydrogen evolution – with no co-catalyst at all. The authors report that BVR-19-Zn outperforms many platinum-modified covalent organic frameworks and metal-containing inorganic photocatalysts.

Stylianou describes this as a different way of thinking about photocatalyst design: the organic building blocks capture the light energy and move the electrons, instead of the metal atoms doing the heavy lifting. Two practical points add to the appeal, according to the OSU press release: the best performer uses zinc, an abundant and non-toxic metal, and BVR-19 forms spontaneously in water at room temperature, which keeps the energy needed to make the material low.

Why it matters: the price gap

The OSU release quotes the figures that define the whole hydrogen debate: hydrogen from methane steam reforming currently costs about USD 1.50 per kilogram, green hydrogen about USD 5. Electrolysis closes that gap only where renewable electricity is cheap and abundant. Photocatalysis skips the electricity step altogether – light hits the material, hydrogen comes off – and if it works without noble metals, the system around it becomes simpler as well. Stylianou presents the study as a set of design rules: by swapping the metal while keeping the rest of the structure constant, the team worked out why some versions perform much better than others, which should help in designing the next generation of solar-fuel materials.

What the study does not show yet

A reality check is in order, as it was for the artificial leaf we discussed in October. The press release gives no hydrogen production rate, no solar-to-hydrogen efficiency and no long-term stability data. In photocatalysis research, “hydrogen evolution” normally refers to the reductive half of water splitting, which is often studied with a sacrificial electron donor that supplies the electrons; whether BVR-19-Zn can split water outright, releasing oxygen as well, is not stated in the release. The abstract compares BVR-19-Zn with other laboratory photocatalysts, not with electrolysers. And the paper came out in mid-September: replication by other groups, and the long road from a crystal in a vial to a reactor in the sun, still lie ahead.

None of this diminishes the result. It locates it: BVR-19 is a new design principle for a material class that is only beginning to move from the laboratory into industry, not a competitor to the electrolysers being installed in Switzerland today.

The Swiss connection: MOFs are already in the Power-to-X toolbox

Power-to-X needs two ingredients: renewable hydrogen and recycled CO₂ from biogenic, atmospheric or industrial sources. The OSU work is about the first. For the second, MOFs are already Swiss business. SPIN member novoMOF, a 2017 spin-off from the Paul Scherrer Institute based in Zofingen, develops and produces MOFs at industrial scale for point-source CO₂ capture – the kind of material that lets industrial emitters supply recycled carbon to e-fuel producers. We reported on the company when it joined SPIN in June. That the same material class now shows up on the hydrogen side of the equation is a reminder of how versatile these structures are.

SPIN’s view

Every credible route to cheaper renewable hydrogen is good news for defossilisation, because hydrogen cost sits at the root of every e-fuel cost. Photocatalysis will not replace electrolysis – electrolysis is the technology that is shipping now, and it will carry the Swiss hydrogen ramp-up for the foreseeable future. But the hydrogen economy will be built with several technologies side by side, and a platinum-free photocatalyst that assembles itself in water at room temperature is exactly the kind of result worth watching. We will follow the next steps from Corvallis – ideally with a production rate and a stability curve.

Join SPIN: Companies, research institutions and associations that want to advance Power-to-X in Switzerland are welcome to become members of SPIN. Questions? Write to info@power-to-x.swiss.

Sources: Oregon State University, “New possibilities uncovered for efficiently converting sunlight into clean energy” (28 September 2026); ScienceDaily, “Scientists just found a new way to make hydrogen from water” (4 October 2026); Musa et al., “Intraligand Charge Transfer in Metal-Organic Frameworks Facilitates Radical Anion-Mediated Hydrogen Evolution”, J. Am. Chem. Soc. 2026, 148 (37), 40255–40265; Nobel Prize in Chemistry 2025, press release; novoMOF.

🤖 AI transparency: This text and its visual were created using AI, reviewed and approved by a human.