Separating the (Nano)wheat from the (Nano)chaff

  • ChemPubSoc Europe Logo
  • Author: Angewandte Chemie International Edition
  • Published Date: 05 March 2011
  • Source / Publisher: Angewandte Chemie International Edition/Wiley-VCH
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA
thumbnail image: Separating the (Nano)wheat from the (Nano)chaff

A team from Northwestern University, Illinois, USA,  has come up with a novel way to purify nanowires. Nanoparticles and other low-aspect-ratio shapes are a common by-product from the solution chemical growth of nanowires, and the presence of these short particles greatly affects the assembly of the nanowires.

Huang and co-workers have applied cross-flow filtration to remove nanoparticle by-products from silver nanowires. This method of purification will improve the quality of nanowire products and thus their overall properties. The researchers state that "The continuous mode of operation makes it readily useful for industrial scale nanowire purification, and especially with large-size filters that can handle thousands of liters of solution."

To quantitatively describe the effect of purification, they used concepts of molecular weight distribution and polydispersity index to characterize the aspect ratio (i.e. purity) of nanowire samples.

Images: (c) Wiley-VCH

Article Views: 4737

Sign in Area

Please sign in below

Additional Sign In options

Please note that to comment on an article you must be registered and logged in.
Registration is for free, you may already be registered to receive, e.g., the newsletter. When you register on this website, please ensure you view our terms and conditions. All comments are subject to moderation.

Article Comments - To add a comment please sign in

Bookmark and Share

If you would like to reuse any content, in print or online, from, please contact us first for permission. more

CONNECT: on Facebook on Twitter on YouTube on LinkedIn Sign up for our free newsletter

A product of ChemPubSoc Europe (16 European Chemical Societies)and Wiley-VCH