I don't see much practical use from this work. It is very easy to generate hydrogen from methanol from small fuel reformers which can be onboard for vehicular use.

[–] Lonesome_Lorakian@ttrpg.network 1 points 3 weeks ago

Yeah, they're selling this as a sustainable reaction because the second product is apparently formic acid instead of CO~2~. But of course that means less hydrogen per molecule of methanol and the efficiency using sunlight also seems to be low. So I would agree, sustainable in theory but absolutely nowhere near practical for anything.