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Elektroenzymatische Stickstofffixierung unter Verwendung eines MoFe‐Proteinsystems immobilisiert in einem organischen Redoxpolymer

Journal Article · · Angewandte Chemie
 [1];  [2];  [3];  [1];  [2];  [1]
  1. Department of Chemistry University of Utah 315 S 1400 E Salt Lake City Utah 84112 USA
  2. Analytical Chemistry – Center for Electrochemical Sciences (CES) Faculty of Chemistry and Biochemistry Ruhr University Bochum Universitätsstr. 150 44780 Bochum Deutschland
  3. Department of Chemistry University of Utah 315 S 1400 E Salt Lake City Utah 84112 USA, Department of Chemistry University of California Berkeley California 94720 USA
Abstract

Wir berichten über ein auf einem Polymer basierendes, elektroenzymatisches Stickstofffixierungssystem unter Verwendung eines metallfreien Redoxpolymers – mit Neutralrot modifiziertes Poly(glycidylmethacrylat‐ co ‐methylmethacrylat‐ co ‐poly(ethylenglycol)methacrylat), das ein niedriges Redoxpotential von −0.58 V vs. SCE besitzt. Die stabile und effiziente elektrische Kontaktierung der Nitrogenase innerhalb der Redoxpolymermatrix ermöglicht eine mediierte Bioelektrokatalyse von N 3 , NO 2 und N 2 zu NH 3 , die durch das MoFe‐Protein über die polymergebundenen Redoxeinheiten, die in der Polymermatrix verteilt sind, katalysiert wird. Elektrolyse produzierte 209±30 nmol NH 3  nmol MoFe −1  h −1 durch N 2 ‐Reduktion. Die biosynthetische N 2 ‐Reduktion zu NH 3 wurde durch 15 N 2 ‐Markierungsexperimente und NMR‐Analysen bestätigt.

Sponsoring Organization:
USDOE
Grant/Contract Number:
SC0017845
OSTI ID:
1641852
Alternate ID(s):
OSTI ID: 1641855
Journal Information:
Angewandte Chemie, Journal Name: Angewandte Chemie Journal Issue: 38 Vol. 132; ISSN 0044-8249
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
Germany
Language:
English

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