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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Hybrid catalyst cascade architecture enhancement for complete ethanol electrochemical oxidation

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Author(s):
Franco, Jefferson Honorio [1] ; Aquino Neto, Sidney [1] ; Hickey, David P. [2, 3] ; Minteer, Shelley D. [2, 3] ; de Andrade, Adalgisa R. [1]
Total Authors: 5
Affiliation:
[1] Univ Sao Paulo, Fac Filosofia Ciencias & Letras Ribeirao Preto, Dept Quim, Ribeirao Preto, SP - Brazil
[2] Univ Utah, Dept Chem, Salt Lake City, UT 84112 - USA
[3] Univ Utah, Dept Mat Sci & Engn, Salt Lake City, UT 84112 - USA
Total Affiliations: 3
Document type: Journal article
Source: BIOSENSORS & BIOELECTRONICS; v. 121, p. 281-286, DEC 15 2018.
Web of Science Citations: 4
Abstract

MWCNT-COOH, TEMPO-modified linear poly(ethylenimine), and alcohol (ADH) and aldehyde (AldDH) dehydrogenase immobilization on electrode surfaces yields a hybrid, tri-catalytic architecture that can catalyze complete ethanol electro-oxidation. The chromatographic results obtained for the tri-catalytic hybrid electrode system show that ethanol is totally oxidized to CO2 after 12 h of electrolysis, confirming that organic oxidation catalysts combined with enzymatic catalysts enable collection of up to 12 electrons from ethanol. The Faradaic efficiency lies above 60% for all of the electrode systems investigated herein. Overall, this study illustrates that surface-immobilized, polymer hydrogel-based hybrid multi-catalytic systems exhibit high oxidation rates and constitute a simple methodology with useful application in the development of enzymatic biofuel cells. (AU)

FAPESP's process: 17/20431-7 - Development of hybrid enzymatic cascade to produce an efficient ethanol/O2 biofuel cell
Grantee:Jefferson Honorio Franco
Support Opportunities: Scholarships in Brazil - Post-Doctoral