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Solar-powered water splitter
https://gladerebooted.net/viewtopic.php?f=5&t=1900		 Page 1 of 1
Author:  Adrak [ Sun Feb 21, 2010 6:56 pm ]
Post subject:  Solar-powered water splitter
Quote:
Sunlight + water = hydrogen gas, in a new technique that can convert 60 per cent of sunlight energy absorbed by an electrode into the inflammable fuel. newscientist

Sounds promising.
Author:  NephyrS [ Sun Feb 21, 2010 8:53 pm ]
Post subject: 
The linked article is quite poor in it's description of the original journal article it links to, but the original paper seems solid.

I'll be interested in looking at it in a bit more detail when things slack up around here some.

It's good work, Angewantde does not take bad work to publish.
Author:  NephyrS [ Sun Feb 21, 2010 9:32 pm ]
Post subject: 
After a further read, and discussing it with one of my colleagues (he's working in inorganic electrochemistry, focusing on solar energy), I had a few more comments:

Indium, Gold and Platinum: Even if they don't degrade rapidly, the indium nanocrystals will eventually poison themselves, and all three of those elements are exceptionally expensive and in very limited supply.

It's interesting work, but really nothing hugely novel- just another example of something that is interesting on the scale of a research laboratory, but has no real scalable applicability to real systems.
Author:  Micheal [ Sun Feb 21, 2010 9:54 pm ]
Post subject: 
Electrically splitting water into hydrogen and oxygen has been around for a long time. I'm not sure what is so wonderful about this process that it advances the science.

What happens to the oxygen here anyway?
Author:  NephyrS [ Mon Feb 22, 2010 1:04 am ]
Post subject: 
Released as oxygen gas.

The difference is that this splits water directly, not requiring the intermediate step of collecting energy with a solar panel, stepping it up to the necessary voltage, and then splitting the water with electrodes.
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