Researchers shed more light on conversion of water to hydrogen gas

Aug 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: HTC makes Windows version of flagship One phone

add to favorites email to friend print save as pdf

Related Stories

Molecular shuttle speeds up hydrogen production

Aug 14, 2014

An LMU team affiliated with the Nanosystems Initiative Munich (NIM) has achieved a breakthrough in light-driven generation of hydrogen with semiconductor nanocrystals by using a novel molecular shuttle to ...

The fix is in: Team studies self-healing polymers

Aug 07, 2014

(Phys.org) —A surfboard that seals its own cracks without having to cure in the sun for days. Underwater structures that can be fixed with less work and downtime. Joints that are almost instantly stronger ...

Acid ions are more than spectators

Aug 07, 2014

(Phys.org) —X-ray absorption fine structure (EXAFS) measurements carried out at the U.S. Department of Energy's (DOE's) Advanced Photon Source, coupled with state-of-the-art density functional theory (DFT) ...

Mysterious molecules in space

Jul 29, 2014

Over the vast, empty reaches of interstellar space, countless small molecules tumble quietly though the cold vacuum. Forged in the fusion furnaces of ancient stars and ejected into space when those stars ...

Recommended for you

Apple's stock bounces back to hit a new high (Update)

42 minutes ago

Apple's stock touched a new high Wednesday, reflecting investors' renewed faith in CEO Tim Cook's ability to outwit the competition and expand the technological hit factory built by the late Steve Jobs.

Virtual reality guides those whose memory is failing

1 hour ago

Experts agree that the ability to navigate a neighborhood or built space is one of the first faculties to suffer at the onset of cognitive decline. They also agree that early intervention is crucial for stemming ...

User comments : 1

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