Scientists seek to make energy as plants do

Oct 27, 2008 By Robert S. Boyd

Scientists who are seeking new sources of clean energy are trying to mimic the way plants and trees do it, by converting sunlight into fuel.



Content from McClatchy-Tribune Information Services expires 90 days after original publication date. For more information about McClatchy-Tribune Information Services, please visit www.mctdirect.com .

Explore further: Solar Kettle allows for boiling water off the grid

add to favorites email to friend print save as pdf

Related Stories

Catalysts that produce 'green' fuel

Mar 12, 2013

At the International School for Advanced Studies of Trieste, researchers are studying a way to economically produce a molecule that imitates (and improves) the photosynthesis of plants. It will be used to create solar cells ...

Recommended for you

Solar Kettle allows for boiling water off the grid

7 hours ago

(Phys.org) —A company called Contemporary Energy has unveiled a new device it calls the Solar Kettle. It looks very much like a normal coffee thermos, but has flaps on one side that open to allow for collecting ...

Solar plane sets distance record on US tour

17 hours ago

The first manned aircraft that can fly day and night powered only by solar energy set a new distance record Thursday when it landed after the second leg of a cross-country US tour.

Solar plane aims for new world distance record

May 22, 2013

Solar Impulse, the first aircraft that can fly day and night fueled entirely by energy from the sun, embarked Wednesday on the second leg of its historic journey across the American continent.

User comments : 7

Adjust slider to filter visible comments by rank

Display comments: newest first

earls
5 / 5 (2) Oct 27, 2008
"Artificial photosynthesis differs from photovoltaics, the method used in solar panels, which generates an electrical current that can't be stored but must be loaded onto the electrical grid."

Uh...
codesuidae
4.5 / 5 (4) Oct 27, 2008
It would have been useful to tell us how efficient natural photosynthesis is in capturing sunlight energy, and whether researchers think they can beat this.

We know that the new photovoltaic efficiency record is 25%, and that the electricity produced can be used to power reactions that produce chemical fuels (with an accompanying loss in end-to-end efficiency).

If artificial photosynthesis isn't similarly efficient at producing fuel, then it doesn't sound as if it is better than photovoltaics.
cybrbeast
4 / 5 (2) Oct 27, 2008
Yes, why not focus on solar panels? Fuel for cars becomes obsolete once good electric cars emerge. With high capacity batteries or even supercapacitors for fast charging.
earls
3 / 5 (2) Oct 27, 2008
Right from the article: "Natural photosynthesis captures less than 3 percent of the sunlight that reaches Earth."

A comment was also posted the other day that mentioned efficiency is about 3% to 8% depending on the plant.

I think it is assumed they have bested the plants.
E_L_Earnhardt
3 / 5 (1) Oct 28, 2008
Good work! e=E=mc2 ! Where is "Albert" when you really need him!
Ivanb
4 / 5 (1) Oct 28, 2008
If the final result in artificial photosynthesis is break the water molecule into hydrogen and oxygen, wouldn't it be easier to use photovoltaics combined with electrolysis? I wonder what the overall efficiency of this procedure is.
Lord_jag
not rated yet Nov 06, 2008
Electrolosis:Not high...

I did some looking some time ago, and the electrolosis efficiency is pretty low, about 30%. It get's worse as you scale it up. The more current you dump the worse it gets due to resistance of the metals.

If you start with 24% photovoltaic, you'll get 8% overall. :/

Then you just get hydrogen, and what do you do with that? (more losses when you use it)

I so want it to work, but i'm not seeing the light yet.

More news stories

Google Drive sports new view and scan enhancements

(Phys.org) —Google Drive has a new look and functions. The makeover in Google Drive features scanning and interface enhancements that put the user into "card" mode. The enhancements make it easy for the ...

Solar Kettle allows for boiling water off the grid

(Phys.org) —A company called Contemporary Energy has unveiled a new device it calls the Solar Kettle. It looks very much like a normal coffee thermos, but has flaps on one side that open to allow for collecting ...

Review: Google music plan solid, serendipitous

Google's new music service offers a lot of eye candy to go with the tunes. The song selection of around 18 million tracks is comparable to popular services such as Spotify and Rhapsody, and a myriad of playlists ...

Controlling mood through the motions of mitochondria

(Medical Xpress)—Regulating the distribution of power in neurons is done by a system that makes the national electric grid look simple by comparison. Each neuron has several thousand mitochondria confined ...

A quantum simulator for magnetic materials

Physicists understand perfectly well why a fridge magnet sticks to certain metallic surfaces. But there are more exotic forms of magnetism whose properties remain unclear, despite decades of intense research. ...

A hidden population of exotic neutron stars

(Phys.org) —Magnetars – the dense remains of dead stars that erupt sporadically with bursts of high-energy radiation - are some of the most extreme objects known in the Universe. A major campaign using ...