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Electrochemical Reduction of Carbon Dioxide to Methanol by Direct Injection of Electrons into Immobilized Enzymes on a Modified Electrode

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논문

Electrochemical Reduction of Carbon Dioxide to Methanol by Direct Injection of Electrons into Immobilized Enzymes on a Modified Electrode

학술지

ChemSusChem

저자명

Schlager, Stefanie; Dumitru, Liviu Mihai; Haberbauer, Marianne; Fuchsbauer, Anita; Neugebauer, Helmut; Hiemetsberger, Daniela; Wagner, Annika; Portenkirchner, Engelbert; Sariciftci, Niyazi Serdar

초록

<P><B>Abstract</B></P><P>We present results for direct bio&#x2010;electrocatalytic reduction of CO<SUB>2</SUB> to C<SUB>1</SUB> products using electrodes with immobilized enzymes. Enzymatic reduction reactions are well known from biological systems where CO<SUB>2</SUB> is selectively reduced to formate, formaldehyde, or methanol at room temperature and ambient pressure. In the past, the use of such enzymatic reductions for CO<SUB>2</SUB> was limited due to the necessity of a sacrificial co&#x2010;enzyme, such as nicotinamide adenine dinucleotide (NADH), to supply electrons and the hydrogen equivalent. The method reported here in this paper operates without the co&#x2010;enzyme NADH by directly injecting electrons from electrodes into immobilized enzymes. We demonstrate the immobilization of formate, formaldehyde, and alcohol dehydrogenases on one&#x2010;and&#x2010;the&#x2010;same electrode for direct CO<SUB>2</SUB> reduction. Carbon felt is used as working electrode material. An alginate&#x2013;silicate hybrid gel matrix is used for the immobilization of the enzymes on the electrode. Generation of methanol is observed for the six&#x2010;electron reduction with Faradaic efficiencies of around 10 %. This method of immobilization of enzymes on electrodes offers the opportunity for electrochemical application of enzymatic electrodes to many reactions in which a substitution of the expensive sacrificial co&#x2010;enzyme NADH is desired.</P>

발행연도

2016

발행기관

John Wiley and Sons Inc.

라이선스

cc-by-nc-nd

ISSN

1864-5631

ISSN

1864-564x

9

6

페이지

pp.631-635

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1 2023-12-11

논문; 2016-02-17

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