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Chemists at the University of California have demonstrated a prototype device that can capture energy from the sun, convert it to electrical energy and “split” carbon dioxide into carbon monoxide (CO) and oxygen. The device is not yet optimized — it still needs external energy for the process to work. However, the researchers hope that their results will encourage interest in the device.
“For every mention of CO2 splitting, there are more than 100 articles on splitting water to produce hydrogen, yet CO2 splitting uses up more of what you want to put a dent into,” explained Kubiak, one of the chemists involved in the project. “It also produces CO, an important industrial chemical, which is normally produced from natural gas. So with CO2 splitting you can save fuel, produce a useful chemical and reduce a greenhouse gas.”
The device designed by Kubiak and Sathrum to split carbon dioxide utilizes a semiconductor and two thin layers of catalysts. It splits carbon dioxide to generate carbon monoxide and oxygen in a three-step process. The first step is the capture of solar energy photons by the semiconductor. The second step is the conversion of optical energy into electrical energy by the semiconductor. The third step is the deployment of electrical energy to the catalysts. The catalysts convert carbon dioxide to carbon monoxide on one side of the device and to oxygen on the other side.
:: Via Mobile Magazine and Tech News Watch
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Just grow a damn plant already.
Turns CO2 into energy without releasing CO. Already optimized. Cheap.
http://hugg.com/story/Turn-CO2-In-To-Fuel-With-Solar-Power/
Wait.... So carbon dioxide= bad
but carbon monoxide=good?
For more information:
Technology Review Article
http://www.technologyreview.com/Energy/18582/page1/
points out origin of research in Mars Mission technology, ends with "Kubiak says that commercial systems could be 10 years away--the efficiency and economics of making fuels this way aren't known. "
CompoundSemiconductor.net Article
http://compoundsemiconductor.net/articles/news/11/4/24/1
features a diagram, and information on the type of semiconductor used.
This is the opposite of a catalytic converter.
This and Thermoelectronics should be the most funded and researched Renewable Energy resources in my opinon. They would offer the most potential if one can figure out an effecient high conversion output. Most anything nature does we have been able to scientifically reproduce on some level. Plants and trees can convert Carbon Dioxide into energy & energy = electricity. When there is no sunlight the conversion could still occur just as heat can occur with or without sunlight. They should be recieving the grants that are being given out for Hydrogen Fuel cell technology. That still requires refinement and is much more complicated to make as an effective source of fuel. Hence the reason it is the alternative energy source being pushed and funded.