Researchers shed more light on conversion of water to hydrogen gas

August 29, 2005

Chemists are several steps closer to teasing hydrogen fuel from water using man-made molecular devices that collect electrons and use them to split hydrogen from oxygen.

Electrons are negatively charged particles that allow atoms to react and form bonds. Karen Brewer, professor of chemistry, announced at last August's ACS meeting that her group was able to use light to initiate electron collection and deliver the electrons to the catalyst site where they can be used to reduce water to hydrogen. "Light energy is converted to chemical energy," Brewer said.

In the past year, the group has come up with additional molecular assemblies that absorb light more efficiently and activate conversion more efficiently. "We have come up with other systems to convert light energy to hydrogen. So we have a better understanding of what parts and properties are key to having a molecular system work," Brewer said.

The researchers are working with the Air Force Research Laboratory, which is modeling what happens in the molecular systems after light is absorbed. "The AFRL researchers are interested in how light causes charge separation in large molecular systems. We have been working together to understand the initial stages of the light activation process in our molecular assemblies," Brewer said.

"Previously we concentrated on collecting light and delivering it to the catalyst site. Now we are concentrating on using this activated catalyst to convert water to hydrogen," Brewer said. "Once we know more about how this process happens, using our supramolecular design process, we can plug in different pieces to make it function better."

Jared Brown, of Salem, Va., presents the poster, "Multielectron photoreduction of mixed metal supramolecular complexes and their application in photochemical hydrogen production" (INOR 138), co-authored by Mark Elvington, of Blacksburg, and Brewer, from 7 to 9 p.m. Sunday, Aug. 28.

Elvington presents the poster, "Supramolecular ruthenium(II), rhodium(III) mixed metal complexes as photochemical molecular devices: Mechanistic studies investigating photoinitiated electron collection (INOR 388), co-authored by Brown and Brewer, from 7 to 9 p.m. Tuesday, Aug. 30.

Poster sessions are in the Washington, D.C., Convention Center Hall A.

ACS summer fellow Shatara Mayfield from North Carolina A&T was awarded a fellowship to spend her summer working on this project.

Source: Virginia Tech

Explore further: Better understanding of light harvesting may benefit agriculture

Related Stories

We've been wrong about the origins of life for 90 years

August 16, 2016

For nearly nine decades, science's favorite explanation for the origin of life has been the "primordial soup". This is the idea that life began from a series of chemical reactions in a warm pond on Earth's surface, triggered ...

Stellar lab in Sagittarius

August 10, 2016

Messier 18 was discovered and catalogued in 1764 by Charles Messier—for whom the Messier Objects are named—during his search for comet-like objects. It lies within the Milky Way, approximately 4600 light-years away in ...

A star's birth holds early clues to life potential

July 25, 2016

Our solar system began as a cloud of gas and dust. Over time, gravity slowly pulled these bits together into the Sun and planets we recognize today. While not every system is friendly to life, astronomers want to piece together ...

Recommended for you

Inferring urban travel patterns from cellphone data

August 29, 2016

In making decisions about infrastructure development and resource allocation, city planners rely on models of how people move through their cities, on foot, in cars, and on public transportation. Those models are largely ...

1 comment

Adjust slider to filter visible comments by rank

Display comments: newest first

carwaterguide
not rated yet Sep 18, 2008
hi,there

i hope this site may be help many people.....Has anyone tried another water for gas kit?

i think many people don't have to try something to understand that it works.
I've seen facts on the news and all over the Internet, that running a car on water IS possible. Even that I haven't tried

doing it, it doesn't mean that it's impossible.

this is not spam but i want many people to see other choice.Has anyone tried the kit? like water4gas,runyourcaronwater etc.
Is it really a scam? if you don't satisfy you can asked for refund..no more pain
You can truly get better mileage....http://carwatergu...spot.com

thank you very much for visit my site

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.