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A comment on Self-sustaining solar reactor creates clean hydrogen fuel. Parent comment
The general idea is well known: http://en.wikipedia.org/wiki/Photocatalytic_water_splitting
This specific method is also well known: http://en.wikipedia.org/wiki/Zinc_zinc-oxide_cycle
And there are many other possible cycles: http://en.wikipedia.org/wiki/Water_splitting
At 2500c water will split into hydrogen without any help at all: http://en.wikipedia.org/wiki/High-temperature_electrolysis This reactor runs at 1600c.
This is basically a combination of the two things - use a lot of heat to make the reaction easier, and use solar catalyzed reactions to take it the rest of the way.
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The general idea is well known: http://en.wikipedia.org/wiki/Photocatalytic_water_splitting
This specific method is also well known: http://en.wikipedia.org/wiki/Zinc_zinc-oxide_cycle
And there are many other possible cycles: http://en.wikipedia.org/wiki/Water_splitting
At 2500c water will split into hydrogen without any help at all: http://en.wikipedia.org/wiki/High-temperature_electrolysis This reactor runs at 1600c.
This is basically a combination of the two things - use a lot of heat to make the reaction easier, and use solar catalyzed reactions to take it the rest of the way.