Thursday, March 01, 2012

US Patent 8124785 - Producing nanoparticles from ionic liquid

Manufacture of nanoparticles is typically performed either in solution (i.e. wet processes) or in vacuum (i.e. dry processes). The problem is that wet process steps lead to unwanted aggregation of nanoparticles making uniform distribution difficult and dry processes are difficult to scale up to produce large volumes of nanopowders. This patent from Japanese researchers teaches an alternative technique which may overcome these problems. Claim 1 reads:

1. A method for producing nanoparticles, comprising attaching atoms or molecules from a nanoparticle precursor to an ionic liquid, without stirring, by evaporating the atoms or molecules from the nanoparticle precursor, thereby producing nanoparticles, the nanoparticles precursor being in the form of a solid.

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