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
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