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More Hydrogen from Sunlight

When there's a good idea around, there's more than one person pursuing it. And so it turns out that the artificial photosynthesis we covered recently isn't the only approach being pursued to uk cialis produce hydrogen using only water and sunlight. A team of scientists from the Department of Energy’s SLAC National Accelerator Laboratory and Stanford University and others at the Technical University of Denmark (DTU) are also working on a method to generate hydrogen from water using sunlight.

This form of photo-electrochemical (PEC) water splitting uses molybdenum sulfide as a catalyst rather than platinum.  Platinum has been known to work as a catalyst for PEC water splitting, but it is also a particularly rare and expensive mineral, which makes it problematic for widespread use. In addition to developing an inexpensive catalyst, the research has also worked on light absorbers to capture as much light energy as possible.

"The experimental researchers at DTU designed light absorbers that consist of silicon arranged in closely packed pillars, and dotted the pillars with tiny clusters of the molybdenum sulfide. When they exposed the 50 mg cialis dose pillars to light, hydrogen gas bubbled up—as quickly as if they'd used costly platinum," according to a press release.

Most hydrogen currently used in industrial and vehicular uses comes from processing natural gas to create hydrogen. This is, of course, a carbon emitting process, and does not offer a sustainable method to develop a hydrogen-based infrastructure for power and/or transportation. But, if any of these current methods turns out to be affordable, scalable, and safe, then the hydrogen future may be more than just a fanciful idea.

via: DOE Energy Blog

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Comments (5)Add Comment
This might work.
written by Tem, May 12, 2011
I imagine a closed system for providing energy to power a cars electric motors where water stored in a tank is pumped up to a splitter on the roof, then the Hydrogen gas is sucked into a small tank (compressed) until needed by the fuel cell that creates electricity. The electricity is stored in a battery for the electric motors & systems, and the resulting water goes back to the water storage tank. The amount of energy needed for moving a vehicle for a minute or two is small, so if this can be an on demand system the cheap viagra canadian pharmacy storage tanks can be relatively small. Just a thought.
Carbon Print
written by Asaf Shalgi, May 14, 2011
As long as it's not carbon emitting it sounds like a good idea.
written by Mary, May 16, 2011
What is so wrong with natural photosynthesis? Natural is surely better for the planet and the baby jesus will be happier with us.
This sounds promising
written by Andy, May 18, 2011
Tem - I like your implementation, but it is probably easier to store the energy as hydrogen gas rather than chemically within a battery.

Mary - How does natural photosynthesis produce hydrogen?
natural photosynthesis
written by Marcel, May 19, 2011

Natural photosynthesis does not provide resources in an easy fashion and on top of that is rather inefficient given the amount of energy we humans consume on viagra to buy this tiny globe.

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