Pitt researchers create nontoxic clean-up method for potentially toxic nano...( PITTSBURGHUniversity of Pittsburgh r...)
| HOME >> BIOLOGY >> TECHNOLOGY |
PITTSBURGHUniversity of Pittsburgh researchers have developed the first natural, nontoxic method for biodegrading carbon nanotubes, a finding that could help diminish the environmental and health concerns that mar the otherwise bright prospects of the super-strong materials commonly used in products, from electronics to plastics.
A Pitt research team has found that carbon nanotubes deteriorate when exposed to the natural enzyme horseradish peroxidase (HRP), according to a report published recently in Nano Letters coauthored by Alexander Star, an assistant professor of chemistry in Pitt's School of Arts and Sciences, and Valerian Kagan, a professor and vice chair of the Department of Environmental and Occupational Health in Pitt's Graduate School of Public Health. These results open the door to further development of safe and natural methodswith HRP or other enzymesof cleaning up carbon nanotube spills in the environment and the industrial or laboratory setting.
Carbon nanotubes are one-atom thick rolls of graphite 100,000 times smaller than a human hair yet stronger than steel and excellent conductors of electricity and heat. They reinforce plastics, ceramics, or concrete; conduct electricity in electronics or energy-conversion devices; and are sensitive chemical sensors, Star said. (Star created an early-detection device for asthma attacks wherein carbon nanotubes detect minute amounts of nitric oxide preceding an attack.)
"The many applications of nanotubes have resulted in greater production of them, but their toxicity remains controversial," Star said. "Accidental spills of nanotubes are inevitable during their production, and the massive use of nanotube-based materials could lead to increased environmental pollution. We have demonstrated a nontoxic approach to successfully degrade carbon nanotubes in environmentally relevant conditions."
The team's work focused on nanotubes in their raw form as a fine, graphite-li
'/>"/>
| Contact: Morgan Kelly mekelly@pitt.edu 412-624-4356 University of Pittsburgh Source:Eurekalert |
Related biology technology :
1. USC researchers print dense lattice of transparent nanotube transistors on flexible base
2. J. Craig Venter Institute Researchers Publish Significant Advance in Genome Assembly Technology
3. Virginia Tech researchers discover how mosquitoes avoid succumbing to viruses they transmit
4. Alfred Mann Foundation for Biomedical Engineering Launches New Web Site Designed to Help University Researchers Bring Biomedical Advances to Market
5. 2010 Japan Prize to Honor Scientists and Researchers in Industrial Production/Production Technology and Biological Production/Environment Fields
6. Clemson researchers advance nanoscale electromechanical sensors
7. Researchers discover method for mass production of nanomaterial graphene
8. VAP(R) Cholesterol Test Helps Researchers Identify Treatment Effects of Combination Therapy
9. Ultrafast lasers give CU-Boulder researchers a snapshot of electrons in action
10. The Lancets New Online Medical Journal Helps Clinicians and Medical Researchers Find Practice-Changing Evidence Quickly and Easily
11. Researchers show how to stamp nanodevices with rubber molds
| Copyright © 2003-2009 Bio-Medicine. All rights reserved. ABOUT | CONTACT US | DISCLAIMER | PRIVACY POLICY | TERMS AND CONDITIONS |  |