Nanotechnology Now







Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > New Method for Synthesis of Noble Metal-Based Nanoparticles on Various Substrates

Abstract:
Iranian researchers at the University of Isfahan developed a simple yet efficient method for the synthesis of noble metal-based alloy nanoparticles on different types of substrates.

New Method for Synthesis of Noble Metal-Based Nanoparticles on Various Substrates

Tehran, Iran | Posted on September 11th, 2012

Particularly tested for carbon based substrates such as carbon nanocabon tubes, the proposed method has enabled the synthesis of platinum-cobalt nanoparticles featuring lower dimensions, narrower size distributions and higher stabilities compared to the conventional methods.

The major goal of the mentioned research work has been set as preparation of a potent Pt-based catalyst for methanol oxidation reactions occurring in the fuel cells by impregnation of the catalyst precursors upon suitably chosen substrates. During recent years, Direct Methanol Fuel Cells (DMFCs) have attracted a great deal of attention as a clean and green source of energy for various electronic devices and vehicles.

"The most innovative feature of our proposed method is the fabrication of Pt-based alloys at high temperatures in form of 3-nm-sized particles on CNT substrates such that they exhibit spectacularly high thermal stability," Dr. Rozgar Ahmadi, a member of the research group, said.

"This is due to the utilization of elemental sulfur as a modifying agent in course of the synthesis process which allows for obtaining smaller particles, better dispersions and higher degree of alloying. In the final step of synthesis, the used sulfur is totally eliminated through a thermal treatment process in order to avoid any possible catalyst poisoning," he added.

The above-mentioned synthesis technique has proved to be simple and straightforward and does not require any costly or complicated apparatus. In addition, the method seems attractive from a commercialization point of view as its scale-up is claimed smooth and trouble-free.

An elaborate scientific article discussing the research work, "Pt-Co alloy nanoparticles synthesized on sulfur-modified carbon nanotubes as electrocatalysts for methanol electrooxidation reaction", has been published in Journal of Catalysis, volume 292, 2012, pages 81-89.

####

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

Joint international research project leads to a breakthrough in terahertz spectroscopy January 28th, 2015

Iranian Researchers Planning to Produce Edible Insulin January 28th, 2015

'Bulletproof' battery: Kevlar membrane for safer, thinner lithium rechargeables January 28th, 2015

Spider electro-combs its sticky nano-filaments January 28th, 2015

Chemistry

Anti-microbial coatings with a long-term effect for surfaces presentation at nano tech 2015 in Japan January 21st, 2015

Hydrogels deliver on blood-vessel growth: Rice researchers introduce improved injectable scaffold to promote healing January 20th, 2015

Graphene enables all-electrical control of energy flow from light emitters: First signatures of graphene plasmons at telecommunications wavelength revealed January 20th, 2015

Nanotechnology Used to Produce Ceramic Membrane with High Thermal Stability January 19th, 2015

Chip Technology

Researchers Make Magnetic Graphene: UC Riverside research could lead to new multi-functional electronic devices January 27th, 2015

Nanometrics to Present at the Stifel 2015 Technology, Internet and Media Conference January 27th, 2015

New pathway to valleytronics January 27th, 2015

Entanglement on a chip: Breakthrough promises secure communications and faster computers January 27th, 2015

Nanotubes/Buckyballs

Chromium-centered cycloparaphenylene rings for making functionalized nanocarbons January 26th, 2015

GS7 Graphene Sensor maybe Solution in Fight Against Cancer January 25th, 2015

Toyocolor to Launch New Carbon Nanotube Materials at nano tech 2015 January 24th, 2015

Carbon nanotube finding could lead to flexible electronics with longer battery life January 14th, 2015

Announcements

Iranian Researchers Planning to Produce Edible Insulin January 28th, 2015

Nanoparticles that deliver oligonucleotide drugs into cells described in Nucleic Acid Therapeutics January 28th, 2015

'Bulletproof' battery: Kevlar membrane for safer, thinner lithium rechargeables January 28th, 2015

Spider electro-combs its sticky nano-filaments January 28th, 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







© Copyright 1999-2015 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE