Low Cost Graphite Alternative To Fabricating Nanotechnology Biosensors
Summary posted by Meridian on 9/8/2008
Source: Nanowerk
Author: Michael Berger
Researchers from Michigan State University in the U.S. have developed a biosensor made with nanometal decorated graphene instead of more expensive carbon nanotubes. Researcher Ilsoon Lee explained, "Several previous studies have reported the application of the combination of metal nanoparticles and carbon nanotubes in biosensor application. But graphene has unique properties such as the highest thermal oxidation resistance and the highest degree of graphitization compared to carbon nanotube and carbon black that are widely used. Graphene also provides excellent support for nanometal catalysts. We made use of these properties by decorating exfoliated graphite nanoplatelets with platinum and palladium nanoparticles as a transducer for a glucose biosensor." The researchers report that the incorporation of the graphene into the biosensor interface resulted in a more effective electrode surface area and provided an exceptional support for the palladium and platinum nanoparticles. The researchers also tested the storage stability of the new biosensors and report that they maintained 70 percent of their sensitivity after one month of dry storage at 4 degrees Celsius and 50 percent after 2 months. According to the article, the researchers, in a previous study, demonstrated that graphene can potentially be a lower cost alternative to carbon nanotubes for biosensor applications, at a price of about US$10 per kilogram. The article says that “[t]he combination of high performance and inexpensive nanomaterial components – much less expensive than carbon nanotubes – suggests that this approach may be very suitable for commercial applications.” The article can be viewed online at the link below.
The original article may still be available at www.nanowerk.com/spotlight/spotid=7144.php
As tagged by Meridian Institute:
Health And Medical:
Devices
Nanomaterials:
Carbon Nanoparticle, Metal Nanoparticle
Regions:
North America
Stakeholders:
Academia
Related Forums:
Nanotechnology Quintuples Heating Capacity of Solar Water Heaters
-- Renewable Energy Magazine (9/1/2010) Researchers at the University of Rio de Janeiro (UFRJ), Brazil, have developed a solar heating system that uses nanotechnology to heat water to five times the temperature of a conventional system, while also permitting the collector surface area to retain up to 98 percent of heat from solar radiation. [More]
Pakistan's Science Minister Attacks Funding Cuts
-- SciDev.Net (9/1/2010) The Pakistan government has cuts its funds for the Pakistan Ministry of Science and Technology's 2010-2011 budget by almost half, causing the science minister, Muhammad Azam Khan Swati, to criticize his own government. [More]
Nanotechnology: Small wonders
-- Nature (9/1/2010) This article takes an in-depth look at the United States National Nanotechnology Initiative (NNI)'s first 10 years - to find out where the money went and what the initiative plans to do next. [More]
Nanotech on Farmers' Fields
-- Silicon Nutrition (8/31/2010) A plant nutrition study that addresses nano-sized plant nutrients is now available from the Landbouwkundige Uitgeverij G.C. van den Berg (Veenendaal, The Netherlands). [More]
Learn how to include these headlines on your own website by clicking here.
Please email us if you require text-only versions of the daily emails.
