Navigation Links
Artificial leaf jumps developmental hurdle
Date:2/18/2014

​In a recent early online edition of Nature Chemistry, ASU scientists, along with colleagues at Argonne National Laboratory, have reported advances toward perfecting a functional artificial leaf.

Designing an artificial leaf that uses solar energy to convert water cheaply and efficiently into hydrogen and oxygen is one of the goals of BISfuel the Energy Frontier Research Center, funded by the Department of Energy, in the Department of Chemistry and Biochemistry at Arizona State University.

Hydrogen is an important fuel in itself and serves as an indispensible reagent for the production of light hydrocarbon fuels from heavy petroleum feed stocks. Society requires a renewable source of fuel that is widely distributed, abundant, inexpensive and environmentally clean.

Society needs cheap hydrogen.

"Initially, our artificial leaf did not work very well, and our diagnostic studies on why indicated that a step where a fast chemical reaction had to interact with a slow chemical reaction was not efficient," said ASU chemistry professor Thomas Moore. "The fast one is the step where light energy is converted to chemical energy, and the slow one is the step where the chemical energy is used to convert water into its elements viz. hydrogen and oxygen."

The researchers took a closer look at how nature had overcome a related problem in the part of the photosynthetic process where water is oxidized to yield oxygen.

"We looked in detail and found that nature had used an intermediate step," said Moore. "This intermediate step involved a relay for electrons in which one half of the relay interacted with the fast step in an optimal way to satisfy it, and the other half of the relay then had time to do the slow step of water oxidation in an efficient way."

They then designed an artificial relay based on the natural one and were rewarded with a major improvement.

Seeking to understand what they
'/>"/>

Contact: Jenny Green
jenny.green@asu.edu
480-965-1430
Arizona State University
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Artificial womb unlocks secrets of early embryo development
2. Artificial wetlands can provide benefits over the long haul
3. UCSF artificial kidney project tapped for accelerated FDA program
4. Liquid glucagon formulation discovered for potential use in artificial pancreas systems
5. Artificial jellyfish swims in a heartbeat
6. UD partner in NIH research project to produce artificial salivary glands
7. Artificial intelligence helps detect subtle differences in mutant worms
8. Researchers develop method to grow artificial tissues with embedded nanoscale sensors
9. High-speed video and artificial flowers shed light on mysteries of hummingbird-pollinated flowers
10. New geometries: Researchers create new shapes of artificial microcompartments
11. Scale-up of a temporary bioartificial liver support system described in BioResearch Open Access
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Artificial leaf jumps developmental hurdle
(Date:9/15/2014)... West Africa, which has claimed more than 2000 lives, ... the molecular biology of the virus that could be ... to treat or prevent Ebola hemorrhagic fever. Now, a ... under the leadership of Dr Dan Engel, a virologist, ... obtained the crystal structure of a key protein involved ...
(Date:9/15/2014)... long and weighing as much as 170 tons, the blue ... far the heaviest living thing ever seen on Earth. So ... the tiniest fish larvae, which measure millimeters in length and ... , Not so fast, says L. Mahadevan, the Lola ... Evolutionary Biology, and of Physics. , Using simple hydrodynamics, ...
(Date:9/15/2014)... teeming with life it,s not what comes to mind ... time evidence of Doncaster,s 310-million-year-old past, including a fossilised shark ... , Some of the fossilised plants and creatures may even ... case, several horseshoe crabs and some previously unrecorded seed pods ... rocks that formed within the coal and shale deposits in ...
Breaking Biology News(10 mins):Protein secrets of Ebola virus 2The science behind swimming 2The science behind swimming 3'Jaws' lived in Doncaster 2
... change is already having a detectable impact on birds ... team publishing their findings to create the world,s first ... a continental scale. Published in the journal ... Royal Society for the Protection of Birds have shown ...
... climate change projected this century for Oregon,s Upper ... supplies, buildings, transportation systems, human health, forests, and ... by the University of Oregon,s Climate Leadership Initiative ... Policy. The authors say that extensive efforts ...
... DNA in the nucleus of each of our cells is converted ... serve as coding templates for the synthesis of proteins. Of the ... scant few are known: they inhibit the activity of genes or ... within cells. What the rest of them do within cells is ...
Cached Biology News:Climate change affecting Europe's birds now, say researchers 2Climate change affecting Europe's birds now, say researchers 3Eugene-Springfield face Upper Willamette climate threats 2Eugene-Springfield face Upper Willamette climate threats 3Eugene-Springfield face Upper Willamette climate threats 4CSHL researchers pinpoint structure-building role for 2 non-coding RNAs 2CSHL researchers pinpoint structure-building role for 2 non-coding RNAs 3
(Date:9/16/2014)... RENU 28, the world's first and only skin ... purchase in Australia and New Zealand in mid-August . , ... The tour will make stops in Brisbane on September 16, ... Sydney on the 20th, and Melbourne on the 22nd. , ... and to educate people about the new product and business ...
(Date:9/15/2014)... Sept. 15, 2014   Global Science & ... scientific products and services for satellite and weather ... for Integrated Services (OASIS) from the General Services ... selected to provide the government best-value solutions for ... (SB) category in Pool 4. The OASIS SB ...
(Date:9/15/2014)... Sept. 15, 2014 EnGeneIC, Ltd. ... the treatment of cancer through the targeted delivery ... that, together with the Asbestos Disease Research Institute ... New South Wales (NSW) Premier,s Award for Excellence ... are the hospitals that will be involved in ...
(Date:9/15/2014)... have developed a technique for controlling the surface tension ... the door to a new generation of reconfigurable electronic ... the fact that the oxide "skin" of the metal ... as a surfactant, lowering the surface tension between the ... a liquid metal alloy of gallium and indium. In ...
Breaking Biology Technology:Global Wellness Company Hosts ASEA Australia Tour September 16-22 2Global Science & Technology, Inc. Awarded GSA OASIS Small Business Contract 2Global Science & Technology, Inc. Awarded GSA OASIS Small Business Contract 3EnGeneIC Named a Recipient of the Cancer Institute NSW Premier's Award for Excellence in Translational Cancer Research 2EnGeneIC Named a Recipient of the Cancer Institute NSW Premier's Award for Excellence in Translational Cancer Research 3Researchers control surface tension to manipulate liquid metals 2
... Sinovac Biotech Ltd. (Amex:,SVA), a leading provider ... today that the Annual General Meeting of ... postponed due the geographical,nature of its shareholders ... materials. The Company is currently working to ...
... LLC announced,today that two new managing directors have ... firm in July 2007 as Managing Director and,Associate ... portfolios of potential investments for Third,Security,s funds, and ... and develop their own intellectual property positions. Mr. ...
... Aug. 20 Advanced Cell,Technology, Inc. (OTC Bulletin ... conditions, it plans to privately offer up to ... timing of the,closing of the offering will be ... are expected to be used to fund working ...
Cached Biology Technology:Sinovac Announces Postponement of Annual General Meeting 2Third Security, LLC Hires Two New Managing Directors 2Advanced Cell Technology Announces Proposed Financing 2Advanced Cell Technology Announces Proposed Financing 3
Immunogen: C terminus [VQLKRSKNDSKPYC] of cardiac elav-type RNA-binding protein (ETR-3) Storage: -20 C, Avoid Freeze/Thaw Cycles...
Borosilicate Glass. Certified for use with the Beacon 2000 Systems, 1,000 tubes/case...
... 2000 One-Step FP Standardization Kit is ... low fluorescence polarization values of fluorescein ... Beacon 2000 System. It also allows ... generated by their instrument to the ...
Whole blood is collected from mice (Swiss Webster, 8-10 weeks old,either sex) and processed within 45 minutes of collection. The complement is then filtered and pooled on ice, bottled and stored at -...
Biology Products: