Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

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

Atomic imperfections move quantum communication network closer to reality June 25th, 2017

Research accelerates quest for quicker, longer-lasting electronics: UC Riverside-led research makes topological insulators magnetic well above room temperatures June 25th, 2017

U.S. Air Force Research Lab Taps IBM to Build Brain-Inspired AI Supercomputing System: Equal to 64 million neurons, new neurosynaptic supercomputing system will power complex AI tasks at unprecedented speed and energy efficiency June 23rd, 2017

Rice U. chemists create 3-D printed graphene foam June 22nd, 2017

Sensors

Letiís Autonomous-Vehicle System Embedded in Infineonís AURIX Platform: Letiís Low-Power, Multi-Sensor System that Transforms Distance Data into Clear Information About the Driving Environment Will Be Demonstrated at ITS Meeting in Strasbourg, June 19-22 June 20th, 2017

New diode features optically controlled capacitance: Israeli researchers have developed a new optically tunable capacitor with embedded metal nanoparticles, creating a metal-insulator-semiconductor diode that is tunable by illumination. June 8th, 2017

Graphene and quantum dots put in motion a CMOS-integrated camera that can see the invisible May 29th, 2017

Ag/ZnO-Nanorods Schottky diodes based UV-PDs are fabricated and tested May 26th, 2017

Discoveries

Atomic imperfections move quantum communication network closer to reality June 25th, 2017

Research accelerates quest for quicker, longer-lasting electronics: UC Riverside-led research makes topological insulators magnetic well above room temperatures June 25th, 2017

Rice U. chemists create 3-D printed graphene foam June 22nd, 2017

Enhanced photocatalytic activity by Cu2O nanoparticles integrated H2Ti3O7 nanotubes June 21st, 2017

Announcements

Atomic imperfections move quantum communication network closer to reality June 25th, 2017

Research accelerates quest for quicker, longer-lasting electronics: UC Riverside-led research makes topological insulators magnetic well above room temperatures June 25th, 2017

U.S. Air Force Research Lab Taps IBM to Build Brain-Inspired AI Supercomputing System: Equal to 64 million neurons, new neurosynaptic supercomputing system will power complex AI tasks at unprecedented speed and energy efficiency June 23rd, 2017

Rice U. chemists create 3-D printed graphene foam June 22nd, 2017

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