 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
| . |  |
. |
Artificial Photosynthesis Moves A Step Closer
Julich, Germany (SPX) Mar 27, 2008 Julich scientists have made an important step on the long road to artificially mimicking photosynthesis. They were able to synthesise a stable inorganic metal oxide cluster, which enables the fast and effective oxidation of water to oxygen. This is reported by the German high-impact journal "Angewandte Chemie" in a publication rated as a VIP ("very important paper"). Artificial photosynthesis may decisively contribute to solving energy and climate problems, if researchers find a way to efficiently produce hydrogen with the aid of solar energy. Hydrogen is regarded as the energy carrier of the future. The automobile industry, for example, is working hard to introduce fuel cell technology starting approximately in 2010. However, a fuel cell drive system can only be really environmentally friendly, if researchers succeed in producing hydrogen from renewable sources. Artificial photosynthesis, i.e. the splitting of water into oxygen and hydrogen with the aid of sunlight, could be an elegant way of solving this problem. However, the road to success is littered with obstacles. One of the obstacles to be overcome is the formation of aggressive substances in the process of water oxidation. Plants solve this problem by constantly repairing and replacing their green catalysts. A technical imitation depends on more stable catalysts as developed and synthesised for the first time by a team from Research Centre Julich, member of the Helmholtz Association, and from Emory University in Atlanta, USA. The new inorganic metal oxide cluster with a core consisting of four ions of the rare transition metal ruthenium catalyses the fast and effective oxidation of water to oxygen while remaining stable itself. "Our water-soluble tetraruthenium complex displays its effects in aqueous solution already at ambient temperature," enthuses Prof. Paul Kogerler from the Julich Institute of Solid State Research, who synthesised and characterised the promising cluster together with his colleague Dr. Bogdan Botar. Catalytic measurements were carried out at Emory University. "In contrast to all other molecular catalysts for water oxidation, our catalyst does not contain any organic components. This is why it is so stable". Botar explains the next step: "Now the challenge is to integrate this ruthenium complex into photoactive systems, which efficiently convert solar energy into chemical energy". So far, energy is still obtained from a chemical oxidant. Community Email This Article Comment On This Article Related Links Institute of Solid State Research All About Solar Energy at SolarDaily.com
FPL Plans To Build New Solar Electric Generating Facility In California
Juno Beach FL (SPX) Mar 27, 2008FPL Energy announced an important step in its strategy to add significantly to its solar power generating capability. FPL Energy, through a wholly-owned subsidiary, has filed an Application for Certification with the California Energy Commission (CEC) to construct, own and operate a 250-megawatt solar plant in the Mojave Desert to be called the Beacon Solar Energy Project. |
|
|
| The content herein, unless otherwise known to be public domain, are Copyright 1995-2007 - SpaceDaily.AFP and UPI Wire Stories are copyright Agence France-Presse and United Press International. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by SpaceDaily on any Web page published or hosted by SpaceDaily. Privacy Statement |
