Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

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

Bosch announces high-performance MEMS acceleration sensors for wearables June 27th, 2017

Nanometrics to Participate in the 9th Annual CEO Investor Summit 2017: Accredited investor and publishing research analyst event held concurrently with SEMICON West and Intersolar 2017 in San Francisco June 27th, 2017

NMRC, University of Nottingham chooses the Quorum Q150 coater for its reliable and reproducible film thickness when coating samples with iridium June 27th, 2017

Picosun’s ALD solutions enable novel high-speed memories June 27th, 2017

Chemistry

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

New carbon nitride material coupled with ruthenium enhances visible-light CO2 reduction in water June 15th, 2017

Learning with light: New system allows optical “deep learning”: Neural networks could be implemented more quickly using new photonic technology June 12th, 2017

Electrocatalyst nanostructures key to improved fuel cells, electrolyzers June 5th, 2017

Chip Technology

Nanometrics to Participate in the 9th Annual CEO Investor Summit 2017: Accredited investor and publishing research analyst event held concurrently with SEMICON West and Intersolar 2017 in San Francisco June 27th, 2017

New TriboLab CMP Provides Cost-Effective Characterization of Chemical Mechanical Wafer Polishing Processes: Bruker Updates Industry-Standard CP-4 Platform for Most Flexible and Reliable Testing June 27th, 2017

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

Nanotubes/Buckyballs/Fullerenes/Nanorods

Tests show no nanotubes released during utilisation of nanoaugmented materials June 9th, 2017

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

Fed grant backs nanofiber development: Rice University joins Department of Energy 'Next Generation Machines' initiative May 10th, 2017

Nanotubes that build themselves April 14th, 2017

Announcements

Bosch announces high-performance MEMS acceleration sensors for wearables June 27th, 2017

Nanometrics to Participate in the 9th Annual CEO Investor Summit 2017: Accredited investor and publishing research analyst event held concurrently with SEMICON West and Intersolar 2017 in San Francisco June 27th, 2017

NMRC, University of Nottingham chooses the Quorum Q150 coater for its reliable and reproducible film thickness when coating samples with iridium June 27th, 2017

Picosun’s ALD solutions enable novel high-speed memories June 27th, 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