Navigation Links
Carbon nanotube structures changed by 'attack' from within, researchers discover
Date:8/16/2011

A team of researchers involving scientists from The University of Nottingham has shown for the first time that chemical reactions at the nano-level which change the structure of carbon nanotubes can be sparked by an 'attack' from within.

The discovery challenges previous scientific thinking that the internal surface of the hollow nanostructures is chemically unreactive, largely restricting their use to that of an inert container or a 'nano-reactor' inside which other chemical reactions can take place.

Their research, published in the journal Nature Chemistry, shows that carbon nanotubes that have had their structures changed are exciting new materials that could be useful in the development of new technologies for gas storage devices, chemical sensors and parts of electronic devices such as transistors.

Dr Andrei Khlobystov, of the University's School of Chemistry, who led the work at Nottingham, said: "It has universally been accepted for some time now that the internal surface of carbon nanotubes or the concave side is chemically unreactive, and indeed we have been successfully using carbon nanotubes as nano-reactors.

"However, in the course of this new research we made the serendipitous discovery that in the presence of catalytically active transition metals inside the nanotube cavity, the nanotube itself can be involved in unexpected chemical reactions."

Carbon nanotubes are remarkable nanostructures with a typical diameter of 1𔃀 nanometres, which is 80,000 times smaller than the thickness of a human hair. Dr Khlobystov and his research associates were recently involved in the discovery published in Nature Materials that nanotubes can be used as a catalyst for the production of nanoribbon, atomically thin strips of carbon created from carbon and sulphur atoms. These nanoribbons could potentially be used as new materials for the next generation of computers and data storage devices that are faster, smaller and more powerful.

In this latest research, the scientists found that an individual atom of Rhenium metal (Re) sets off a chemical reaction leading to the transformation of the inner wall of the nanotube. Initially, the attack by the Rhenium creates a small defect in the nanotube wall which then gradually develops into a nano-sized protrusion by 'eating' additional carbon atoms.

The protrusion then rapidly increases in size and seals itself off, forming a unique carbon structure dubbed a NanoBud, so called because the protrusion on the carbon nanotube resembles a bud on a stem.

Previously, NanoBuds were believed to be formed outside the nanotube through reactions on the outer surface with carbon molecules called fullerenes.

The new study demonstrates for the first time that they can be formed from within, provided that a transition metal atom with suitable catalytic activity is present within the nanotube.


'/>"/>

Contact: Emma Thorne
emma.thorne@nottingham.ac.uk
44-011-595-15793
University of Nottingham
Source:Eurekalert

Related biology technology :

1. Researchers clarify properties of confined water within single-walled carbon nanotube pores
2. New materials based on carbon nanoparticles
3. Blocking carbon dioxide fixation in bacteria increases biofuel production
4. Ultra fast photodetectors out of carbon nanotubes
5. Taming carbon nanotubes
6. Touchscreens made of carbon
7. Curved carbon for electronics of the future
8. Carbon-Based Nano-Materials and Devices Conference
9. Earthshaking possibilities may limit underground storage of carbon dioxide
10. Energy technologies not enough to sufficiently reduce carbon emissions, NYUs Hoffert concludes
11. Scientists observe single ions moving through tiny carbon-nanotube channel
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/17/2017)... ... July 17, 2017 , ... ... delivery device testing capabilities to encompass the full series of ISO 80369 standard ... of fittings for medical device and drug delivery systems. With this recent expansion, ...
(Date:7/17/2017)... ... , ... Panitch Schwarze Belisario & Nadel intellectual ... Innovation Group) annual meeting in China. , This year’s meeting, held June 9-10 ... a rapidly developing highly personalized anti-cancer technology that involves removing some of a ...
(Date:7/15/2017)... Island, NY (PRWEB) , ... July 15, 2017 , ... ... for over 5 years. During this time, the people at FFS have learned ... from their customers, engineers at FFS are able to launch new products to meet ...
(Date:7/13/2017)... ... 13, 2017 , ... Thousands of pilots from across the country will visit ... (Nats). Pilots come to Muncie to compete in various categories of model flying competition. ... participate in world championships. , RC Pylon (July 14-21): One of the most fun ...
Breaking Biology Technology:
(Date:4/17/2017)... MELBOURNE, Florida , April 17, 2017 ... security technology company, announces the filing of its 2016 Annual Report ... Securities and Exchange Commission. ... Report on Form 10-K is available in the Investor Relations section ... well as on the SEC,s website at http://www.sec.gov . ...
(Date:4/11/2017)... BROOKLYN, N.Y. , April 11, 2017 /PRNewswire-USNewswire/ ... identical fingerprints, but researchers at the New York ... University College of Engineering have found that partial ... fingerprint-based security systems used in mobile phones and ... previously thought. The vulnerability lies in ...
(Date:4/5/2017)... KEY FINDINGS The global market ... CAGR of 25.76% during the forecast period of 2017-2025. ... for the growth of the stem cell market. ... MARKET INSIGHTS The global stem cell market is segmented ... The stem cell market of the product is segmented ...
Breaking Biology News(10 mins):