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Science Forum Index » Nanotechnology Forum » nanopowder production
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| puggy |
 Posted: Sun Jul 27, 2003 8:08 pm |
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anyone know of any good resources for nanopowder production, especially
semiconductor nanopowders? |
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| Oliver 'Ojo' Bedford |
| Posted: Thu Aug 07, 2003 8:09 am |
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"JCS" <rastanura@removeme.hotmail.com> writes:
Quote: I believe Dupont used to make sub-micron sized silica colloids...maybe in
the 50 nm range? If I remember correctly, it was called Ludox. You should
be able to process this colloid into a dry nanopowder.
Colloidal silica sols like Ludox (or Klebosol from Clariant or
Bindzil and Nyacol from Akzo Nobel or Levasil from Bayer or
Koestrosol from CWK or Snowtex from Nissan Chemicals or ...)
are not stable against aggregation when
dried. BTW: SiO2 is not a semi-conductor.
Regards,
Oliver |
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| Simon Wicks |
| Posted: Thu Aug 21, 2003 7:19 am |
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"puggy" <ntlnews@pugland.com> wrote in message
news:<bg20jh01c7k@enews3.newsguy.com>...
Quote: anyone know of any good resources for nanopowder production, especially
semiconductor nanopowders?
Do a search on Science direct or something for semiconductor
particles. Matijevic pretty much rules on this subject of nano
partiles. What are you after? CdS particles are pretty common, do you
want different sizes and shapes? If so, your getting deep into colloid
science. I would recommend you read something by Matijevic before
trying too much.
An example i found with a quick search was: A. Kasuya et al., Colloids
and surfaces A, Vol. 202, 2002, p.291
They make II-VI semiconductors using emulsion and micelisation
processes. Niot size control but the techniques could certainly be
improved upon!
Hope that helps
Simon |
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