Method and apparatus for producing a stable sub-colloidal nano-phase silver metal hydrosol

• US 8,361,505 B1
• Filed: 06/28/2006
• Issued: 01/29/2013
• Est. Priority Date: 06/28/2006
• Status: Active Grant

• Current Assignee: Stephen C. Perry
• Original Assignee: Stephen C. Perry
• Inventors: Perry, Stephen C.
• Primary Examiner(s): Dickinson, Paul
• Application Number:
  US11/427,050
• Time in Patent Office: 2,407 Days
• Field of Search: None
• US Class Current: 424/489
• CPC Class Codes: B01J 13/0043 containing elemental metal for medical or diagnostical purposes A61K, G01N
• CPC Class Codes: B01J 13/0086 Preparation of sols by physical processes colloid mills B02C

Abstract

An apparatus and method for the preparation and formation of a stable sub-colloidal-sized silver metal hydrosol in pure distilled water without the use of supporting or stabilizing proteins, carbohydrates, or similar types of ligands. The silver metal hydrosol is created by passing an alternating current, high-voltage arc discharge between two pure silver electrodes. The discharge arc passes from a silver wire suspended above the distilled water working fluid, first through the air, and then through the working fluid to a submerged silver plate, thereby completing the circuit. With the passage of the discharge arc through the silver wire, a quantity of the silver metal is deflagrated from the bulk surface of the metal and is vaporized into silver metal atoms, or aggregates of atoms, dispersed into the air. The vaporized silver metal atoms are rapidly quenched into separate atoms or aggregates upon making contact with the cooled working fluid.

Claims

1. A method for producing a stable, sub-colloidal, nano-phase silver metal hydrosol comprising the steps of:

providing a vessel having an opening;

placing distilled water as a working fluid in said vessel;

providing a moveable wire-shaped electrode constructed from 99.9995% purity silver metal above said vessel and above said working fluid;

immersing a plate-shaped electrode constructed from 99.9995% purity silver metal in said working fluid, said plate-shaped electrode completely immersed in said working fluid, from between 0.50 inches and 0.75 inches beneath the surface of said working fluid;

providing a transformer;

connecting a first shielded electrical lead having a first end to said transformer;

connecting a second end of said first shielded electrical lead to said wire-shaped electrode;

connecting a second shielded electrical lead having a first end to said transformer;

connecting a second end of said second shielded electrical lead to said plate-shaped electrode;

passing a 14,000-18,000 Volt alternating current from said transformer to establish a discharge arc between the silver wire-shaped electrode above the working fluid and plate-shaped electrode immersed in the working fluid wherein the separation distance of said arc is between 1.25 and 1.50 inches, said separation distance defining the distance between said wire-shaped electrode and said plate-shaped electrode; and

producing subcolloidal sized silver metal particles in said working fluid from said discharge arc and said wire-shaped electrode and said plate shaped electrode.

2. The method of claim 1, including the steps of initially forming an arc between the first wire electrode and said plate electrode and moving said wire electrode forming said arc above the top surface of the working fluid to increase particle production.

3. The method of claim 2, wherein the recorded rate of the loss of weight of the silver from the wire-shaped electrode is maintained between 940 to 950 milligrams over a period of 250 to 275 minutes, the equivalent of a rate of loss of length of approximately 0.25 inches of silver wire from the wire-shaped electrode, equivalent to a weight loss of 225 to 250 mg per hour.

4. The method of claim 1, including the step of cooling the working fluid to maintain the temperature of the working fluid below 1000 degrees Fahrenheit.