Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

Home > Press > SU Chemists Develop ‘Fresh, New’ Approach to Making Alloy Nanomaterials: Potential applications include gas storage, heterogeneous catalysis and lithium-ion batteries

Associate Professor Mathew M. Maye, right, with research assistant Wenjie Wu G’11, G’13
Associate Professor Mathew M. Maye, right, with research assistant Wenjie Wu G’11, G’13

Abstract:
Chemists in The College of Arts and Sciences have figured out how to synthesize nanomaterials with stainless steel-like interfaces. Their discovery may change how the form and structure of nanomaterials are manipulated, particularly those used for gas storage, heterogeneous catalysis and lithium-ion batteries.

SU Chemists Develop ‘Fresh, New’ Approach to Making Alloy Nanomaterials: Potential applications include gas storage, heterogeneous catalysis and lithium-ion batteries

Syracuse, NY | Posted on August 10th, 2013

The findings are the subject of a July 24 article in the journal Small (Wiley-VCH, 2013), co-authored by associate professor Mathew M. Maye and research assistant Wenjie Wu G'11, G'13.

Until now, scientists have used many wet-chemical approaches—collectively known as colloidal synthesis—to manipulate reactions in which metallic ions form alloys at the nanoscale. Here, metal nanoparticles are typically 2 to 50 nanometers in size and have highly unique properties, including various colors, high reactivity and novel chemistry.

Maye and Wu are part of a growing team of international chemists and materials scientists devising new ways to alter the size, shape and composition of nanoparticles.

"At SU, we have developed a new synthetic pathway to tailor the internal microstructure of nanomaterials," says Maye, whose research spans inorganic chemistry, catalysis, materials science, self-assembly and biotechnology.

Maye's approach begins with a pre-synthesized iron nanoparticle core. After synthesizing the core in its crystalline metallic form, he and Wu chemically deposit thin shells of chromium onto the iron. When the "core/shell" nanoparticles are exposed to high temperatures, they anneal. Moreover, the iron and chromium diffuse into one another, forming an iron-chromium alloy shell. Thus, the "core/alloy" product has an interface similar to some forms of stainless steel.

Since stainless steel is known for its resistance to oxidation, the big challenge for Maye and Wu has been finding out how nanoparticles cope during this process.

"We've discovered that nanoparticles exhibit a unique behavior when oxidized," he says. "A thin, iron-chromium oxide shell forms, leaving behind an unoxidized iron core. Even more interesting is the fact that a void forms, separating the core from the shell. This phenomenon is known in materials science as Kirkendall Diffusion, or Vacancy Coalescence."

This kind of work, he adds, wouldn't be possible without high-resolution electron microscopy, X-ray diffraction and magnetic measurements.

Although "core/alloy" fabrication is a new approach, it may allow for more diverse forms of alloy nanomaterials.

"Most alloys we take for granted at the macroscale, such as steel, are hard to fabricate at the nanoscale, because of ease of oxidation and other specific conditions that are required," says Maye. "Our approach may open new doors."

A recipient of many honors and awards, including the Presidential Early Career Award for Scientists and Engineers, Maye joined SU's faculty in 2008.

Wu, whose expertise encompasses nanomaterials synthesis, was the lead graduate student on the project. In August, she earns a Ph.D. in inorganic chemistry from SU.

Maye's work is supported by the American Chemical Society Petroleum Research Fund. It has made use of the Cornell Center for Materials Research, which is part of the National Science Foundation's Materials Research Science and Engineering Centers, as well as the Binghamton University Analytical and Diagnostics Laboratory and the SUNY College of Environmental Science and Forestry Microscopy Facility.

####

For more information, please click here

Contacts:
Rob Enslin

315-443-3403

Copyright © Syracuse University

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 Links

Download article:

Related News Press

News and information

Optimization of alloy materials: Diffusion processes in nano particles decoded November 13th, 2018

GLOBALFOUNDRIES, indie Semiconductor Deliver Performance-Enhanced Microcontrollers for Automotive Applications: 55nm LPx platform, with SST’s highly reliable embedded SuperFlash®, increases performance and energy efficiency for automotive applications November 13th, 2018

GLOBALFOUNDRIES, indie Semiconductor Deliver Performance-Enhanced Microcontrollers for Automotive Applications: 55nm LPx platform, with SST’s highly reliable embedded SuperFlash®, increases performance and energy efficiency for automotive applications November 13th, 2018

European Commission Project Creates Pilot Line for Companies to Develop Mid-Infrared Devices: Companies Can Submit Proposals for Possible Matching Funds To Help Develop Prototypes November 13th, 2018

Chemistry

Nanotech Artisans Sculpt with DNA November 5th, 2018

Iran World’s Second Largest Producer of Nano-Catalysts October 17th, 2018

Big award enables study of small surfaces: Rice U.'s Matt Jones wins Packard Fellowship to view nanoscale chemical reactions October 15th, 2018

High-performance self-assembled catalyst for SOFC October 12th, 2018

Govt.-Legislation/Regulation/Funding/Policy

European Commission Project Creates Pilot Line for Companies to Develop Mid-Infrared Devices: Companies Can Submit Proposals for Possible Matching Funds To Help Develop Prototypes November 13th, 2018

Unlocking the Secrets of Metal-Insulator Transitions: X-ray photon correlation spectroscopy at NSLS-II's CSX beamline used to understand electrical conductivity transitions in magnetite November 8th, 2018

Physicists name and codify new field in nanotechnology: ‘electron quantum metamaterials:’ UC Riverside’s Nathaniel Gabor and colleague formulate a vision for the field in a perspective article November 5th, 2018

Nanotech Artisans Sculpt with DNA November 5th, 2018

Discoveries

Optimization of alloy materials: Diffusion processes in nano particles decoded November 13th, 2018

Unlocking the Secrets of Metal-Insulator Transitions: X-ray photon correlation spectroscopy at NSLS-II's CSX beamline used to understand electrical conductivity transitions in magnetite November 8th, 2018

WSU researchers develop new technique to understand biology at the nanoscale November 7th, 2018

A record-long polymer DNA negative November 6th, 2018

Materials/Metamaterials

Optimization of alloy materials: Diffusion processes in nano particles decoded November 13th, 2018

Unlocking the Secrets of Metal-Insulator Transitions: X-ray photon correlation spectroscopy at NSLS-II's CSX beamline used to understand electrical conductivity transitions in magnetite November 8th, 2018

Physicists name and codify new field in nanotechnology: ‘electron quantum metamaterials:’ UC Riverside’s Nathaniel Gabor and colleague formulate a vision for the field in a perspective article November 5th, 2018

Eco-friendly waterproof polymer films synthesized using novel method October 31st, 2018

Announcements

Optimization of alloy materials: Diffusion processes in nano particles decoded November 13th, 2018

GLOBALFOUNDRIES, indie Semiconductor Deliver Performance-Enhanced Microcontrollers for Automotive Applications: 55nm LPx platform, with SST’s highly reliable embedded SuperFlash®, increases performance and energy efficiency for automotive applications November 13th, 2018

GLOBALFOUNDRIES, indie Semiconductor Deliver Performance-Enhanced Microcontrollers for Automotive Applications: 55nm LPx platform, with SST’s highly reliable embedded SuperFlash®, increases performance and energy efficiency for automotive applications November 13th, 2018

European Commission Project Creates Pilot Line for Companies to Develop Mid-Infrared Devices: Companies Can Submit Proposals for Possible Matching Funds To Help Develop Prototypes November 13th, 2018

Interviews/Book Reviews/Essays/Reports/Podcasts/Journals/White papers

Optimization of alloy materials: Diffusion processes in nano particles decoded November 13th, 2018

Unlocking the Secrets of Metal-Insulator Transitions: X-ray photon correlation spectroscopy at NSLS-II's CSX beamline used to understand electrical conductivity transitions in magnetite November 8th, 2018

WSU researchers develop new technique to understand biology at the nanoscale November 7th, 2018

IEDM - CEA-Leti Will Present 11 Papers and Host Workshop on Disruptive Technologies for Data Management November 7th, 2018

Energy

Rice U. scientists form flat tellurium: Two-dimensional element shows promise for solar cells and other optoelectronics October 26th, 2018

How to mass produce cell-sized robots: Technique from MIT could lead to tiny, self-powered devices for environmental, industrial, or medical monitoring October 24th, 2018

Oil industry supply company, Scale Protection based in Norway use the Deben SEM motorised stage in their benchtop SEM for the analysis of particulates on filters collected from oil well water October 23rd, 2018

High-performance self-assembled catalyst for SOFC October 12th, 2018

Battery Technology/Capacitors/Generators/Piezoelectrics/Thermoelectrics/Energy storage

Rice U. scientists form flat tellurium: Two-dimensional element shows promise for solar cells and other optoelectronics October 26th, 2018

Nanotubes may give the world better batteries: Rice U. scientists' method quenches lithium metal dendrites in batteries that charge faster, last longer October 25th, 2018

Big award enables study of small surfaces: Rice U.'s Matt Jones wins Packard Fellowship to view nanoscale chemical reactions October 15th, 2018

High-performance self-assembled catalyst for SOFC October 12th, 2018

Grants/Sponsored Research/Awards/Scholarships/Gifts/Contests/Honors/Records

Physicists name and codify new field in nanotechnology: ‘electron quantum metamaterials:’ UC Riverside’s Nathaniel Gabor and colleague formulate a vision for the field in a perspective article November 5th, 2018

Eco-friendly waterproof polymer films synthesized using novel method October 31st, 2018

Rice U. scientists form flat tellurium: Two-dimensional element shows promise for solar cells and other optoelectronics October 26th, 2018

Iran World’s Second Largest Producer of Nano-Catalysts October 17th, 2018

NanoNews-Digest
The latest news from around the world, FREE



  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project