"Highly Efficient Platinum-Free Photocatalytic Hydrogen Evolution From Low-cost Conjugated Polymer Nanoparticles" (2025) https://advanced.onlinelibrary.wiley.com/doi/10.1002/adma.20... :
> Abstract: While the interest in hydrogen photocatalysis from organic semiconductors is rapidly growing, there is a necessity to achieve hydrogen production without platinum (Pt), considering its price, availability and toxicity. In this work, this is demonstrated that high hydrogen evolution reaction (HER) efficiencies can be achieved without the use of Pt. A series of low-cost conjugated polymers are designed around the dibenzothiophene-S,S-sulfoxide (BTSO) unit, and self-assembled as nanoparticles in water via the nanoprecipitation technique. This is highlighted that how side chain engineering, nanoparticle morphology and pH influence the hydrogen evolution rate. Optoelectronic properties are improved through a Donor-Acceptor structure, resulting in an unprecedented hydrogen evolution reaction rate of 209 mmol g−1 h−1 in the absence of Pt. A clear correlation between high efficiencies and number of BTSO units within the polymer backbone can be established. The design rules pioneer the design of future organic materials is presented for a cost-efficient and sustainable hydrogen photocatalysis.
tim-tday•15h ago
Manuel_D•14h ago
Even if the approach is to create net-neutral hydrocarbon fuels, those processes still need hydrogen as an input so a better method to produce hydrogen is valuable.
amluto•11h ago
People have run the numbers, and battery-powered transoceanic shipping actually seems okay.
pstuart•14h ago
I do agree that there's significant greenwashing by the petroleum companies to push it as you note, but both of these things can be true.
At least they seem to have given up on the lunacy of using hydrogen for fueling vehicles. Green hydrogen sourced methanol on the other hand would be worthy of pursuit.
westurner•13h ago
- Hydrogen fueling stations and processing facilities must be ventilated and brushless.