Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

Home > Press > NJIT Chemists Modify Carbon Nanotubes Using Microwaves

Abstract:
Novel method of changing the chemical characteristics of carbon nanotubes

NJIT Chemists Modify Carbon Nanotubes Using Microwaves

Neward, NJ | March 17, 2005

Researchers at New Jersey Institute of Technology have discovered a novel method of changing the chemical characteristics of carbon nanotubes by heating them in a closed vessel microwave oven. Somenath Mitra, PhD, professor of chemistry and environmental sciences, and Zafar Iqbal, PhD, also a professor of chemistry and environmental sciences, will discuss their findings Thursday, March 17 from 8:30 a.m.-12:15 p.m. at the 229th national meeting of the American Chemical Society (ACS) at the Hyatt Regency Hotel, San Diego.

The pair, aided by doctoral student Yubing Wang, have written “Microwave-Induced, Green and Rapid Chemical Functionalization of Single-Walled Carbon Nanotubes” to be published in a forthcoming issue of the journal Carbon.

Carbon nanotubes, which were only discovered in 1991, are molecular-scale nano materials made from carbon atoms connected single-file in a tube. The tubes are closed at either end by hemispherical structures and typically exhibit lengths ranging from tens of micrometers to a few millimeters.

“We understand ourselves to be the first in the world to have discovered this method,” said Mitra. “The beauty is that our method is green and clean. We use no toxic material and reduce the reaction times from hours—on occasion even days—to three minutes.”

Iqbal noted that the method costs much less than others currently used. “Plus, the solubility of our carbon nanotubes are several times higher than any other researcher has yet reported in this short amount of time.” Solubility is the most essential characteristic of carbon nanotubes since researchers must be able to dissolve them to see them work their magic.

With a microwave oven hitting temperatures of 250 degrees Celsius, the researchers can chemically modify the tubes. Such a temperature is closer to radiation treatment than the output of a kitchen microwave oven. Since the reactions are fast, the nanotubes are not damaged or structurally modified.

“A carbon nanotube is just carbon,” said Mitra. “The surprise for us is that it’s difficult to make nanotubes react with anything. They are like diamonds—very, very inert. They don’t react and they don’t dissolve in water. But, if you can change their chemical characteristics as we have done using our method, we see them transform right before our eyes.”

Once the tiny, microscopic tubes are chemically altered, they become soluble in common solvents like water and alcohol, and new kinds of films or coatings can be produced. The tubes can also be formulated into paints and plastic nanocomposites. The functionalized nanotubes become more useful than the pristine ones because the functionalized groups can be tailored for specific applications.

“Nanotubes are opening new vistas for products and design,” added Mitra. “For example, the space shuttle includes components of lightweight carbon or carbon-polymer composites. The military especially likes these materials because ultimately they will allow for the development of lightweight equipment.”

###

New Jersey Institute of Technology, the state's public technological research university, enrolls more than 8,200 students in bachelor's, master's and doctoral degrees in 100 degree programs offered by six colleges: Newark College of Engineering, New Jersey School of Architecture, College of Science and Liberal Arts, School of Management, Albert Dorman Honors College and College of Computing Sciences. NJIT is renowned for expertise in architecture, applied mathematics, wireless communications and networking, solar physics, advanced engineered particulate materials, nanotechnology, neural engineering and eLearning.



Contact:
Sheryl Weinstein
Public Relations
973-596-3436
sheryl.m.weinstein@njit.edu

Copyright © NJIT

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

Possible Futures

Nominations Invited for $250,000 Kabiller Prize in Nanoscience: Major international prize recognizes a visionary nanotechnology researcher February 20th, 2017

Breakthrough with a chain of gold atoms: In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport February 20th, 2017

'Lossless' metamaterial could boost efficiency of lasers and other light-based devices February 20th, 2017

Particles from outer space are wreaking low-grade havoc on personal electronics February 19th, 2017

Nanotubes/Buckyballs/Fullerenes

Boron atoms stretch out, gain new powers: Rice University simulations demonstrate 1-D material's stiffness, electrical versatility January 26th, 2017

New stem cell technique shows promise for bone repair January 25th, 2017

Captured on video: DNA nanotubes build a bridge between 2 molecular posts: Research may lead to new lines of direct communication with cells January 9th, 2017

Nano-chimneys can cool circuits: Rice University scientists calculate tweaks to graphene would form phonon-friendly cones January 4th, 2017

Discoveries

Oxford Instruments announces Dr Brad Ramshaw of Cornell University, as winner of the 2017 Lee Osheroff Richardson Science Prize February 20th, 2017

Breakthrough with a chain of gold atoms: In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport February 20th, 2017

'Lossless' metamaterial could boost efficiency of lasers and other light-based devices February 20th, 2017

Particles from outer space are wreaking low-grade havoc on personal electronics February 19th, 2017

Announcements

Oxford Instruments announces Dr Brad Ramshaw of Cornell University, as winner of the 2017 Lee Osheroff Richardson Science Prize February 20th, 2017

Nominations Invited for $250,000 Kabiller Prize in Nanoscience: Major international prize recognizes a visionary nanotechnology researcher February 20th, 2017

Breakthrough with a chain of gold atoms: In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport February 20th, 2017

'Lossless' metamaterial could boost efficiency of lasers and other light-based devices February 20th, 2017

Environment

Meta-lenses bring benchtop performance to small, hand-held spectrometer: Game-changing nanostructure-based lenses allow smaller devices, increased functionality February 9th, 2017

NIST updates 'sweet' 1950s separation method to clean nanoparticles from organisms January 27th, 2017

Investigating the impact of natural and manmade nanomaterials on living things: Center for Environmental Implications of Nanotechnology develops tools to assess current and future risk January 9th, 2017

PCATDES Starts Field Testing of Photocatalytic Reactors in South East Asia December 28th, 2016

NanoNews-Digest
The latest news from around the world, FREE



  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project