Immobilized Enzymes on Graphene as Nanobiocatalyst.

ABSTRACT: Using enzymes as bioelectrocatalysts is an important step toward the next level of biotechnology for energy production. In such biocatalysts, a sacrificial cofactor as an electron and proton source is needed. This is a great obstacle for upscaling, due to cofactor instability and product separation issues, which increase the costs. Here, we report a cofactor-free electroreduction of CO₂ to a high energy density chemical (methanol) catalyzed by enzyme-graphene hybrids. The biocatalyst consists of dehydrogenases covalently bound on a well-defined carboxyl graphene derivative, serving the role of a conductive nanoplatform. This nanobiocatalyst achieves reduction of CO₂ to methanol at high current densities, which remain unchanged for at least 20 h of operation, without p

SUBMITTER: Seelajaroen H 

PROVIDER: S-EPMC6953471 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature