Nanotechnology Now





Heifer International

Wikipedia Affiliate Button


DHgate

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

Researchers from the UCA, key players in a pioneering study that may explain the origin of several digestive diseases June 30th, 2015

Oxford Instrumentsí TritonTMXL Cryofree dilution refrigerator selected for the Oxford NQIT Quantum Technology Hub project June 30th, 2015

Visible Light-Sensitive Photocatalysts Used for Purification of Contaminated Water in Iran June 30th, 2015

June 29th, 2015

Sensors

Visible Light-Sensitive Photocatalysts Used for Purification of Contaminated Water in Iran June 30th, 2015

Graphene breakthrough as Bosch creates magnetic sensor 100 times more sensitive than silicon equivalent June 28th, 2015

The peaks and valleys of silicon: Team of USC Viterbi School of Engineering Researchers introduce new layered semiconducting materials as silicon alternative June 27th, 2015

Green Chemistry Methods Used in Iran to Produce Zinc Oxide Nanoparticles June 27th, 2015

Discoveries

Researchers from the UCA, key players in a pioneering study that may explain the origin of several digestive diseases June 30th, 2015

Visible Light-Sensitive Photocatalysts Used for Purification of Contaminated Water in Iran June 30th, 2015

The Hydrogen-Fuel cell will revolutionize the economy of the world: New non-platinum and nanosized catalyst for polymer electrolyte fuel cell June 29th, 2015

June 29th, 2015

Announcements

Researchers from the UCA, key players in a pioneering study that may explain the origin of several digestive diseases June 30th, 2015

Oxford Instrumentsí TritonTMXL Cryofree dilution refrigerator selected for the Oxford NQIT Quantum Technology Hub project June 30th, 2015

Visible Light-Sensitive Photocatalysts Used for Purification of Contaminated Water in Iran June 30th, 2015

Making new materials with micro-explosions: ANU media release: Scientists have made exotic new materials by creating laser-induced micro-explosions in silicon, the common computer chip material June 29th, 2015

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