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Electroactivated film with immobilized peroxide activating catalyst

a technology of activating catalyst and electroactivation film, which is applied in the direction of physical/chemical process catalyst, organic compound/hydride/coordination complex catalyst, non-metal conductor, etc., can solve the problems of mass contamination and danger to living subjects, and achieve the effect of facilitating the production of peroxid

Inactive Publication Date: 2009-11-26
LUMIMOVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

"The present invention is about an electroactivated film that includes a first electrode, a water insoluble electrically conductive medium, an electrocatalyst, and a peroxide-activating catalyst. The film is improved because the peroxide-activating catalyst is immobilized in a phase that is in contact with the moisture-permeable and oxygen permeable electrically conductive medium. This results in faster and more efficient activation of the peroxide. The invention also includes a method for producing the electroactivated film."

Problems solved by technology

In this context, the purposeful deployment of extremely aggressive and harmful chemical or biological agents is meant to cause massive contamination of exposed surfaces, which can remain dangerous to living subjects for as long as the harmful agent retains its potency and remains on the surface.

Method used

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  • Electroactivated film with immobilized peroxide activating catalyst
  • Electroactivated film with immobilized peroxide activating catalyst
  • Electroactivated film with immobilized peroxide activating catalyst

Examples

Experimental program
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Effect test

example 1

[0116]This example illustrates the formation of a carbon electrode on a substrate.

Screen Printing

[0117]Carbon layers that can serve as an electrode for the present films can be applied by screen printing of conductive carbon ink. Examples of suitable inks include XM-740 flexible carbon ink available from Conductive Compounds, Londonderry, N.H., or Electrodag®PF407C carbon ink from Acheson Colloids Company, Port Huron, Mich.

[0118]The ink is screen printed either directly onto the surface of a substrate, or onto a pre-coating that has been applied to the substrate, or onto the surface of a cured gel layer. The ink is screen printed through a 196-mesh screen and then dried in a 100° C. oven for 10-30 minutes.

[0119]An electrode lead can then be attached to the carbon layer for connection to a source of electrical potential.

Carbon Cloth and Carbon Paper:

[0120]Carbon cloth “A” and “D” available from E-Tek Division, BASF Fuel Cell, Inc., Somerset, N.J., and carbon paper TGP-H-060 available...

example 2

[0122]This example illustrates the deposition of a quinone coating onto a carbon electrode to form a (non-covalently bound) coated electrode.

Ethanol Solution Method:

[0123]Carbon electrode material was contacted at room temperature with 10% Nitric acid for 2 to 4 hours, then washed with water, dried and contacted at room temperature with 1M NaOH for another 2 to 4 hours, then washed with water and dried.

[0124]A solution was prepared that contained the desired quinone in ethanol. By way of example, although different concentrations of the quinone could be used, solutions of about 0.01M-1M, or about 0.01-0.05M quinone in ethanol, or from about 0.1% to about 10% by weight of the quinone, were found to be useful.

[0125]The treated carbon materials were placed in the quinone solution for about 6 to 12 hours, taken out, dried in air and then washed three times with DI water, and immersed in DI water for 12 hours, then taken out and dried. The carbon materials coated with quinone were then r...

example 3

[0128]This example illustrates the electrochemical modification of carbon fiber electrodes by covalently-grafted anthraquinone

[0129]Carbon fiber electrodes were used as substrates (working electrodes) in the 3-electrode configuration (Reference Electrode RE: SCE; Counter Electrode CE: Carbon Fiber Electrode). These electrodes are made as a bunch of 5 strands taped together at one end using Aluminum tape and immersed in solution to 3 cm depth at the other end (single strands are pulled out of a twill weave fabric obtained from Aerospace Composites, ACP Composites, Livermore, Calif.).

[0130]The electrolytic solution consists of 0.01M (10 mM) Anthraquinone Diazonium chloride (Fast red AL salt) and 0.1M Tetrabutyl Ammonium Tetrafluoroborate in Acetonitrile medium. Carbon Fiber electrodes were used as substrates (Working Electrode—WE) in a 3-electrode configuration with RE: SCE and CE: C Fiber electrodes. A schematic representation of the procedure is shown in FIG. 3.

[0131]Quinone was dep...

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Abstract

The present electroactivated film includes: a first electrode that is spaced apart from a second electrode, a water insoluble electrically conductive medium which is permeable to moisture and oxygen and which contacts both electrodes, an electrocatalyst which can be reversibly oxidized and reduced and which facilitates the production of a peroxide when an electrical potential is imposed across the electrodes, and a peroxide-activating catalyst which converts the peroxide to an activated peroxide, where the peroxide activating catalyst is immobilized in a phase that is in contact with the moisture-permeable and oxygen permeable electrically conductive medium.

Description

CROSS-REFERENCES TO RELATED PATENTS AND PATENT APPLICATIONS[0001]This application is a non-provisional of and claims priority to U.S. Provisional Patent Application 61 / 128,953, filed May 23, 2008, and is related to U.S. patent application Ser. No. 11 / 471,877, filed Jun. 21, 2006, which was a non-provisional of U.S. Provisional Patent Application No. 60 / 692,529, filed Jun. 21, 2005, each of which is incorporated by reference herein in its entirety.GOVERNMENT LICENSE RIGHTS[0002]This invention was made with Government support under Contract No. W911 QY-06-C-0065 awarded by U.S. Army RDECOM Acquisition Center, Natick Contracting Division, Natick, Mass. The government has certain rights in the invention.BACKGROUND OF THE INVENTION[0003](1) Field of the Invention[0004]The present invention relates to decontaminating coatings, and more particularly to decontaminating coatings in which the decontaminating effect is triggered by electroactivating the coating.[0005](2) Description of the Rel...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): H01B1/12B01J31/06C25B9/19
CPCA61L2/03A61L2/18C25B9/10C25B1/30A61L2/232C25B9/23
Inventor HOU, SHIFENGKINLEN, PATRICK J.VISWANATHAN, SRIRAMEBRON, VON HOWARDULYANOVA, YEVGENIA V.
Owner LUMIMOVE
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