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Artificial Photosynthesis (wikipedia.org)
30 points by tempestn on Aug 27, 2018 | hide | past | favorite | 10 comments



Water oxidation is a more complex chemical reaction than proton reduction. ...

Without a catalyst (natural or artificial), this reaction is very endothermic, requiring high temperatures (at least 2500 K).

Water oxidation may well be endothermic, however, catalysts can not change that fact. A catalyst can change the activation energy of a reaction (thereby changing rate of reaction), but can't change a reaction's thermodynamics.

Endothermic reactions can be driven forward by coupling them to one or more exothermic reactions. Biological systems do this all the time. But even this does not change the thermodynamics of a reaction, which merely represents the difference in energy between products and reactants.

Endothermic reactions can also be driven forward by adding energy (in the form of heat, for example).


If you feel very confident that you're correct, then you should update the wiki. I'd make it, but I wouldn't feel confident since I don't know much about this subject matter.

As a random aside, if you search for that sentence on Google, a journal article [1] appears. It looks like they've copied parts of that wikipedia section verbatim.

[1] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3858868/


Good find. It does appear to be copied verbatim. The statement is wrong (in the sense of what it implies) in both the plagiarized article and in Wikipedia.


Wikipedia is free content that anyone can edit, use, modify, and distribute.


The person who authored the incorrect passage is probably monitoring for changes and may revert the edit.


But what apo says is simply a very clear fact, a catalyst has no effect on thermodynamics but reduces the required temperature here. Would that original author really be incentivized to revert a very clear truth?


Rather than arguing about it here, how about you just make the edit and see what happens.

It might be as simple as your suggesting and you get to win the argument! Or someone might revert and you lose.


I can't tell if you are serious, joking, or new to the Internet.


My experience with editing wikipedia is that it doesn't matter if you're right. What matters how persistent you are at being heard.


Yes. Adding lots of citations to acronym-laden hand-wavey policies which are vague and open to interpretation is also a great asset.




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