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

Conductive Inks: booming to $2.8 billion by 2024 April 17th, 2014

High-temperature plasmonics eyed for solar, computer innovation April 17th, 2014

INSCX™ exchange to present Exchange trade reporting mechanism for engineered nanomaterials (NMs) to UK regulation agencies, insurers and upstream/downstream users April 17th, 2014

Transparent Conductive Films and Sensors Are Hot Segments in Printed Electronics: Start-ups in these fields show above-average momentum, while companies working on emissive displays such as OLED are fading, Lux Research says April 17th, 2014

Sensors

Transparent Conductive Films and Sensors Are Hot Segments in Printed Electronics: Start-ups in these fields show above-average momentum, while companies working on emissive displays such as OLED are fading, Lux Research says April 17th, 2014

Biologists Develop Nanosensors to Visualize Movements and Distribution of Plant Stress Hormone April 15th, 2014

LetiDays Grenoble to Present Multiple Perspectives on Development, Challenges and Markets for the IoT April 14th, 2014

In latest generation of tiny biosensors, size isn't everything: UCLA researchers overturn conventional wisdom on nanowire-based diagnostic devices April 11th, 2014

Discoveries

Novel stapled peptide nanoparticle combination prevents RSV infection, study finds April 17th, 2014

Thinnest feasible membrane produced April 17th, 2014

More effective kidney stone treatment, from the macroscopic to the nanoscale April 17th, 2014

High-temperature plasmonics eyed for solar, computer innovation April 17th, 2014

Announcements

More effective kidney stone treatment, from the macroscopic to the nanoscale April 17th, 2014

High-temperature plasmonics eyed for solar, computer innovation April 17th, 2014

INSCX™ exchange to present Exchange trade reporting mechanism for engineered nanomaterials (NMs) to UK regulation agencies, insurers and upstream/downstream users April 17th, 2014

Transparent Conductive Films and Sensors Are Hot Segments in Printed Electronics: Start-ups in these fields show above-average momentum, while companies working on emissive displays such as OLED are fading, Lux Research says April 17th, 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