Accession Number : ADA172483


Title :   Living Colloidal Metal Particles from Solvated Metal Atoms. Clustering of Metal Atoms in Organic Media 15.


Descriptive Note : Technical rept.,


Corporate Author : KANSAS STATE UNIV MANHATTAN DEPT OF CHEMISTRY


Personal Author(s) : Franklin,M T ; Klabunde,Kenneth J ; Suslick,K


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a172483.pdf


Report Date : 23 Sep 1986


Pagination or Media Count : 29


Abstract : A review of preparative methods for metal sols (colloidal metal particles) suspended in solution is given. The problems involved with the preparation and stabilization of non-aqueous metal colloidal particles are noted. A new method is described for preparing non-aqueous metal sols based on the clustering of solvated metal atoms (from metal vaporization) in cold organic solvents. Gold-acetone colloidal solutions are discussed in detail, especially their preparation, control of particle size (2-9 nm), electrophoresis measurements, electron microscopy, GC-MS, resistivity, and related studies. Particle stabilization involves both electrostatic and steric mechanisms and these are discussed in comparison with aqueous systems.


Descriptors :   *METALS , *CLUSTERING , *COLLOIDS , STABILIZATION , CONTROL , PARTICLE SIZE , LOW TEMPERATURE , WATER , FILMS , ATOMS , ELECTRON MICROSCOPY , ELECTRICAL RESISTANCE , SOLVATION , GOLD , ORGANIC SOLVENTS , PALLADIUM , ELECTROPHORESIS , VAPORIZATION , NONAQUEOUS ELECTROLYTES


Subject Categories : Physical Chemistry


Distribution Statement : APPROVED FOR PUBLIC RELEASE