Nanotechnology Now

Our NanoNews Digest Sponsors



Heifer International

Wikipedia Affiliate Button


android tablet pc

Home > Press > Iranian Scientists Produce Nanosensor for Detection of Methane

Abstract:
A highly efficient nanosensor for the detection of methane was fabricated in the Research Laboratory for Nanotechnology of Mashhad's Ferdowsi University.

Iranian Scientists Produce Nanosensor for Detection of Methane

Tehran, Iran | Posted on August 25th, 2011

"During recent years, the consumption of methane as the main constituent of natural gas has risen to a considerable amount and accordingly the number of reports on gas explosion accidents have increased. As a result, automatic vent detection prior to explosion concentration levels seems vital," Zahra Sheikhi, member of the research group, explained.

"Nanometric semiconductors seem to be suitable for synthesis of such sensors. Due to an interaction between the solid surface and the gas, layer resistance varies and this effect can be exploited for building a sensor. Recent researches have been focused on various oxides of cobalt as they exhibit better sensory properties. We have used Co3O4 which is the most powerful catalyst for methane oxidation in fabrication of the sensor," she added.

Summarizing the synthesis procedure, Sheikhi said, "As the initial step, we prepared nano powders and thin layers of cobalt and copper oxides via sol-gel and spray pyrolysis. The powders were pressed into tablets and afterwards, electrodes were put inside the samples. Finally, the sensitivity of the sensors in presence of methane at different temperatures was studied."

The results of this research reveal that the sensitivity of the sensors increases with temperature and methane concentration. Also, a considerable improvement in sensitivity was encountered in case with introducing some impurities to the nano powders. The best sensitivity corresponded to the highest use of copper ingredient. Quite the reverse was observed for thin layer samples.

####

For more information, please click here

Copyright © Fars News Agency

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

News and information

SEMATECH to Showcase Innovation and Advances in Manufacturing at SEMICON Japan 2014: SEMATECH experts will share the latest techniques, emerging trends and best practices in advanced manufacturing strategies and methodologies November 26th, 2014

Australian startup creates world’s first 100% cotton hydrophobic T-Shirts November 26th, 2014

The mysterious 'action at a distance' between liquid containers November 26th, 2014

'Giant' charge density disturbances discovered in nanomaterials: Juelich researchers amplify Friedel oscillations in thin metallic films November 26th, 2014

Sensors

Lawrence Livermore researchers develop efficient method to produce nanoporous metals November 25th, 2014

Cooling with the coldest matter in the world November 24th, 2014

Canatu Launches CNB In-Mold Film for Transparent Touch on 3D Surfaces –in Cars, Household Appliances, Wearables, Portables November 20th, 2014

UO-industry collaboration points to improved nanomaterials: University of Oregon microscope puts spotlight on the surface structure of quantum dots for designing new solar devices November 20th, 2014

Discoveries

The mysterious 'action at a distance' between liquid containers November 26th, 2014

'Giant' charge density disturbances discovered in nanomaterials: Juelich researchers amplify Friedel oscillations in thin metallic films November 26th, 2014

Vegetable oil ingredient key to destroying gastric disease bacteria: In mice, therapeutic nanoparticles dampen H. pylori bacteria and inflammation that lead to ulcers and gastric cancer November 25th, 2014

Research yields material made of single-atom layers that snap together like Legos November 25th, 2014

Announcements

SEMATECH to Showcase Innovation and Advances in Manufacturing at SEMICON Japan 2014: SEMATECH experts will share the latest techniques, emerging trends and best practices in advanced manufacturing strategies and methodologies November 26th, 2014

Australian startup creates world’s first 100% cotton hydrophobic T-Shirts November 26th, 2014

The mysterious 'action at a distance' between liquid containers November 26th, 2014

'Giant' charge density disturbances discovered in nanomaterials: Juelich researchers amplify Friedel oscillations in thin metallic films November 26th, 2014

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







© Copyright 1999-2014 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE