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Title: Catalyzed enzyme electrodes

Abstract

An enzyme electrode is prepared with a composite coating on an electrical conductor. The composite coating is formed from a casting solution of a perfluorosulfonic acid, polymer, an enzyme, and a carbon supported catalyst. The solution may be cast directly on the conductor surface or may be formed as a membrane and applied to the surface. The perfluorosulfonic acid ionomer formed from the casting solution provides an insoluble biocompatible protective matrix for the enzyme and acts to retain the enzyme for long term availability in the electrode structure. The carbon supported catalyst provides catalytic sites throughout the layer for the oxidation of hydrogen peroxide from the enzyme reactions. The carbon support then provides a conductive path for establishing an electrical signal to the electrical conductor. In one embodiment, the electrical conductor is a carbon cloth that permits oxygen or other gas to be introduced to the perfluorosulfonic polymer to promote the enzyme reaction independent of oxygen in the solution being tested.

Inventors:
; ; ;
Publication Date:
Research Org.:
Los Alamos National Lab., NM (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
10165553
Patent Number(s):
PATENTS-US-A7883746
Application Number:
ON: DE94014898; PAN: 7-883,746
Assignee:
Dept. of Energy
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Patent Application
Resource Relation:
Other Information: PBD: 1992
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ENZYMES; CATALYTIC EFFECTS; ELECTRODES; DESIGN; INVENTIONS; OXIDATION; ENZYME ACTIVITY; CATALYST SUPPORTS; ORGANIC POLYMERS; ELECTROCHEMISTRY; 400400; 400201; CHEMICAL AND PHYSICOCHEMICAL PROPERTIES

Citation Formats

Zawodzinski, T A, Wilson, M S, Rishpon, J, and Gottesfeld, S. Catalyzed enzyme electrodes. United States: N. p., 1992. Web.
Zawodzinski, T A, Wilson, M S, Rishpon, J, & Gottesfeld, S. Catalyzed enzyme electrodes. United States.
Zawodzinski, T A, Wilson, M S, Rishpon, J, and Gottesfeld, S. 1992. "Catalyzed enzyme electrodes". United States. https://www.osti.gov/servlets/purl/10165553.
@article{osti_10165553,
title = {Catalyzed enzyme electrodes},
author = {Zawodzinski, T A and Wilson, M S and Rishpon, J and Gottesfeld, S},
abstractNote = {An enzyme electrode is prepared with a composite coating on an electrical conductor. The composite coating is formed from a casting solution of a perfluorosulfonic acid, polymer, an enzyme, and a carbon supported catalyst. The solution may be cast directly on the conductor surface or may be formed as a membrane and applied to the surface. The perfluorosulfonic acid ionomer formed from the casting solution provides an insoluble biocompatible protective matrix for the enzyme and acts to retain the enzyme for long term availability in the electrode structure. The carbon supported catalyst provides catalytic sites throughout the layer for the oxidation of hydrogen peroxide from the enzyme reactions. The carbon support then provides a conductive path for establishing an electrical signal to the electrical conductor. In one embodiment, the electrical conductor is a carbon cloth that permits oxygen or other gas to be introduced to the perfluorosulfonic polymer to promote the enzyme reaction independent of oxygen in the solution being tested.},
doi = {},
url = {https://www.osti.gov/biblio/10165553}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Dec 31 00:00:00 EST 1992},
month = {Thu Dec 31 00:00:00 EST 1992}
}