PARTICLE-SIZE OF BI-2-PROPANOL AND AU-2-PROPANOL COLLOIDS

Bi-2-propanol and Au-2-propanol colloids have been prepared by chemica l liquid deposition (CLD). The metals are evaporated to yield atoms wh ich are solvated to yield metal atoms at 77 K, and, upon warming, stab le liquid colloids are formed with a narrow range of particle size dep ending on the time and room temperature. Zeta potentials were calculat ed for these negatively charge particles according to the Hunter conve ntion and the Huckel equation. A study of particle size growth at room temperature was performed. The Bi particle size was followed at t = 0 , 30, 60, 90, and 120 min and Au particle size was followed at t = 0, 1, 2, 3, and 4 days, by transmission electron microscopy (TEM).