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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:
 [1];  [1];  [2];  [1]
  1. (Los Alamos, NM)
  2. (Ramat-Aviv, IL)
Publication Date:
Research Org.:
Los Alamos National Laboratory (LANL), Los Alamos, NM
OSTI Identifier:
868851
Patent Number(s):
US 5227042
Assignee:
United States of America as represented by United States (Washington, DC) LANL
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
catalyzed; enzyme; electrodes; electrode; prepared; composite; coating; electrical; conductor; formed; casting; solution; perfluorosulfonic; acid; polymer; carbon; supported; catalyst; cast; directly; surface; membrane; applied; ionomer; provides; insoluble; biocompatible; protective; matrix; retain; term; availability; structure; catalytic; sites; throughout; layer; oxidation; hydrogen; peroxide; reactions; support; conductive; path; establishing; signal; embodiment; cloth; permits; oxygen; gas; introduced; promote; reaction; independent; tested; acid polymer; composite coating; perfluorosulfonic acid; hydrogen peroxide; sulfonic acid; carbon cloth; electrode structure; electrical signal; electrical conductor; supported catalyst; conductive path; casting solution; solution provides; acid ionomer; carbon support; carbon supported; cast directly; provides catalytic; enzyme electrode; catalyst provide; /204/435/

Citation Formats

Zawodzinski, Thomas A., Wilson, Mahlon S., Rishpon, Judith, and Gottesfeld, Shimshon. Catalyzed enzyme electrodes. United States: N. p., 1993. Web.
Zawodzinski, Thomas A., Wilson, Mahlon S., Rishpon, Judith, & Gottesfeld, Shimshon. Catalyzed enzyme electrodes. United States.
Zawodzinski, Thomas A., Wilson, Mahlon S., Rishpon, Judith, and Gottesfeld, Shimshon. Fri . "Catalyzed enzyme electrodes". United States. https://www.osti.gov/servlets/purl/868851.
@article{osti_868851,
title = {Catalyzed enzyme electrodes},
author = {Zawodzinski, Thomas A. and Wilson, Mahlon S. and Rishpon, Judith and Gottesfeld, Shimshon},
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 = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1993},
month = {1}
}

Patent:

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