Navigation Links
Graphene oxide gets green
Date:7/22/2010

"Many companies have started to make graphene and graphene oxide, and I think they're going to be very hard pressed to come up with a cheaper procedure that's this efficient and as safe and environmentally friendly," Tour said.

The researchers suggested the water-soluble product could find use in polymers, ceramics and metals, as thin films for electronics, as drug-delivery devices and for hydrogen storage, as well as for oil and gas recovery.

Though GO is a natural insulator, it could be chemically reduced to a conductor or semiconductor, though not without defects, Tour said.

With so many potential paths into the environment, the fate of GO nanomaterials concerned Tour, who sought the advice of Rice colleague Lttge.

Lttge and Everett Salas, a postdoctoral researcher in his lab and primary author of the second paper, had already been studying the effects of bacteria on carbon, so it was simple to shift their attention to GO. They found bacteria from the genus Shewanella easily convert GO to harmless graphene. The graphene then stacks itself into graphite.

"That's a big plus for green nano, because these ubiquitous bacteria are quickly converting GO into an environmentally benign mineral," Tour said.

Essentially, Salas said, Shewanella have figured out how to "breathe" solid metal oxides. "These bacteria have turned themselves inside out. When we breathe oxygen, the reactions happen inside our cells. These microbes have taken those components and put them on the outside of their cells."

It is this capability that allows them to reduce GO to graphene. "It's a mechanism we don't understand completely because we didn't know it was possible until a few months ago," he said of the process as it relates to GO.

The best news of all, Lttge said, is that these metal-reducing bacteria "are found pretty much everywhere, so there will be no need to 'inoculate' the environment with them," he said. "The
'/>"/>

Contact: David Ruth
druth@rice.edu
713-348-6327
Rice University
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Rice researchers make graphene hybrid
2. 24-carat gold snowflakes improve graphenes electrical properties
3. Engineers develop method to disperse chemically modified graphene in organic solvents
4. Warmer climate entails increased release of carbon dioxide by inland lakes
5. Global model confirms: Cool roofs can offset carbon dioxide emissions and mitigate global warming
6. Solid oxide fuel cells getting closer to the market
7. In elevated carbon dioxide, soybeans stumble but cheatgrass keeps on truckin
8. Storing carbon dioxide deep underground in rock form
9. Study: Carbon monoxide exposure can be reduced during routine anesthesia in kids
10. Grape news: New treatment combination safe alternative to sulfur dioxide
11. E20 fuel reduces carbon monoxide and hydrocarbon emissions in automobiles
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/31/2015)... SHENZHEN , Chine, 31 juillet 2015 /PRNewswire/ ... (ICG-10, www.icg-10.org ) sera organisée par le ... Shenzhen en Chine. ... année. Depuis son inauguration en 2006, l,ICG est ... influentes dans le domaine des « omiques » et c,est ...
(Date:7/31/2015)... Die 10. internationale Konferenz zu Genomik (ICG-10, ... vom 22. bis 25. Oktober 2015 in ... Die Konferenz feiert in diesem Jahr ihr ... ICG weltweit zu einem der einflussreichsten jährlichen Treffen ... dynamischsten, enthusiastischsten und angenehmsten wissenschaftlichen Zusammentreffen. ...
(Date:7/31/2015)... The 10 th International Conference on Genomics ... 22-25, 2015, in Shenzhen , ... 10 th anniversary this year. Since its inauguration in ... annual meetings in the ,omics, fields, and is one of ... ICG-10 focuses on recent breakthroughs and advances in ,omics, ...
Breaking Biology News(10 mins):La 10e International Conference on Genomics (ICG-10) doit s'ouvrir en octobre 2La 10e International Conference on Genomics (ICG-10) doit s'ouvrir en octobre 3Die 10. internationale Konferenz zu Genomik (ICG-10) beginnt im Oktober 2Die 10. internationale Konferenz zu Genomik (ICG-10) beginnt im Oktober 3The 10th International Conference on Genomics (ICG-10) to Open in October 2
... Colorado (CU) has signed exclusive, worldwide licensing and ... Ltd to develop an enzyme replacement therapy for ... metabolic disease that is often fatal at a ... and includes sponsored-research funding by OT to continue ...
... during a record-setting expedition have yielded new insights about ... the cold, dark, and highly pressurized habitats of the ... Natalya Gallo of Scripps Institution of Oceanography at UC ... CHALLENGE expedition, a project led by James Cameron in ...
... virologist Masahiro Niikura and his doctoral student Nicole Bance are ... new class of molecular compounds capable of killing the influenza ... of a good thing can be a killer, the scientists ... is key to how influenza replicates and spreads. , ...
Cached Biology News:University of Colorado and Orphan Technologies sign agreement 2University of Colorado and Orphan Technologies sign agreement 3Vibrant mix of marine life found at extreme ocean depths, Scripps analysis reveals 2Vibrant mix of marine life found at extreme ocean depths, Scripps analysis reveals 3Influenza study: Meet virus' new enemy 2
(Date:8/27/2015)... , Aug. 27, 2015  Neogen Corporation (NASDAQ: ... stock of United Kingdom -based Lab ... culture media and diagnostic systems. Lab ... a leading provider of microbial testing and diagnostic products ... markets. The company currently sells into more than 70 ...
(Date:8/27/2015)... , Aug. 27, 2015 HUYA Bioscience International ... of the Japan Society of HTLV-1, held this week ... The purpose of the Society is to promote research ... development of medical technology and research related to these ... "HUYA is proud to support this prestigious ...
(Date:8/27/2015)... ... August 27, 2015 , ... Proove Biosciences, a ... the relationship of genetics and hypertension at the International Academy of Cardiology ... British Columbia, Canada. The event, which boasts an extensive overview of the latest ...
(Date:8/26/2015)... -- The Diabetes Research Institute (DRI), a Center of ... of Medicine, announced today that the first patient ... first time a novel transplant technique for insulin-producing ... I/II study builds upon decades of progress in ... step toward the development of the DRI BioHub, ...
Breaking Biology Technology:Neogen acquires U.K.-based Lab M Holdings 2HUYA Bioscience International Sponsors Japan Society Of HTLV-1 Annual Meeting 2HUYA Bioscience International Sponsors Japan Society Of HTLV-1 Annual Meeting 3HUYA Bioscience International Sponsors Japan Society Of HTLV-1 Annual Meeting 4Proove Biosciences Presents Ground-Breaking Data on Genetics and Heart Disease at 20th World Congress on Heart Disease 2Proove Biosciences Presents Ground-Breaking Data on Genetics and Heart Disease at 20th World Congress on Heart Disease 3Diabetes Research Institute Successfully Transplants First Patient In Pilot BioHub Trial 2Diabetes Research Institute Successfully Transplants First Patient In Pilot BioHub Trial 3Diabetes Research Institute Successfully Transplants First Patient In Pilot BioHub Trial 4
... , BEIJING, June 8 /PRNewswire-Asia/ -- Sinovac ... provider of vaccines in China, announced today that it,begins the production ... received from US CDC and was delivered to the company on ... Chairman, President and CEO of Sinovac, commented, ,In,the midst of a ...
... Offering AccuVein,s AV300 Hand-Held Vein Illumination Device to Membership , ... AccuVein LLC today announced a three year agreement with ... hand-held, non-contact vein illumination device to its members. The ... skin revealing vein position to help the healthcare professional locate ...
... Pasteuria Bioscience announced that it has received registration from ... usgae . This is a critical step towards the ... prevalent in soil that have long been recognized as promising ... , "We,re very pleased to receive this EPA registration," said ...
Cached Biology Technology:Sinovac Begins the Production of Influenza A (H1N1) Vaccine 2Sinovac Begins the Production of Influenza A (H1N1) Vaccine 3AccuVein Inks National Three-Year Group Purchasing Deal With Amerinet 2Pasteuria Bioscience Receives EPA Registration for Nematode Control 2
capacity 250 mL...
... to MSY2/YBOX2 ( Abpromise for ... Antigen: Synthetic peptide derived from ... of human YBX2. (Note: the ... Entrez ...
... CLS number is a ... to easily match Cornings ... no availability yet, please ... Sigma-Aldrich number (Z35,347-7) or ...
Standard Fluka For microscopy (Bact., Hist.)...
Biology Products: