Hybrid enzymatic and organic catalyst cascade for enhanced complete oxidation of ethanol in an electrochemical micro-reactor device

Autor(es)

Franco, Jefferson Honorio ^{[1, 2]} ; Klunder, Kevin J. ^[1] ; Russell, Victoria ^[1] ; de Andrade, Adalgisa R. ^[2] ; Minteer, Shelley D. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Utah, Dept Chem, Salt Lake City, UT 84112 - USA

^[2] Univ Sao Paulo, Fac Philosophy Sci & Letters Ribeirao Preto, Dept Chem, BR-14040901 Ribeirao Preto, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Electrochimica Acta; v. 331, JAN 20 2020.
• Citações Web of Science: 0

Resumo

This work combines an organic oxidation catalyst, 4-amino-TEMPO (TEMPO-NH2), and a recombinant enzyme, oxalate decarboxylase (OxDc) to create a hybrid catalytic system able to catalyze complete ethanol electrooxidation. The catalyst system was coupled with a novel small scale electrolysis cell utilizing polycaprolactone (PCL) and carbon composite electrodes for bulk electrolysis. Electrochemical measurements and product detection by nuclear magnetic resonance spectroscopy (NMR) after 12 h of electrolysis have shown for the first time that an organic catalyst and decarboxylase enzyme can oxidize ethanol to carbon dioxide at acidic pH. The success presented here, coupling a hybrid organic catalyst/ enzymatic system to simple carbon composites, has potential value for selective alcohol oxidation and is promising for a wide array of applications, including biosensors, environmental monitoring, and biofuel cells. (c) 2019 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 17/20431-7 - Desenvolvimento de uma cascata enzimática híbrida para a produção de biocélula etanol/O2 eficiente
• Beneficiário: Jefferson Honorio Franco
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado