Enzymatic Flow Electrolyzer for CO 2 and Waste Comproportionation to Formate and Its Use in Photocatalytic Alkene Hydrocarboxylation
Year: 2025
Type: article
Abstract: Paired electrolysis enables the simultaneous coupling of CO 2 reduction with anodic waste upcycling to form valuable products. However, achieving selective, efficient, and stable product formation and coupling to downstream valorization remains a challenge. In this study, W‐containing formate dehydrogenase from Nitratidesulfovibrio vulgaris Hildenborough is immobilized onto a cathode made from carbon felt coated with porous TiO 2 and paired with a commercial Ni foam anode to assemble a semiartificial flow electrolyzer for the simultaneous conversion of CO 2 and waste (plastic and biomass) to the single product formate. The enzymatic flow electrolyzer achieved an initial cell faradaic efficiency toward formate of almost 200%, a maximum CO 2 conversion yield of 18% and can operate at a low full‐cell voltage of −1.5 V for 122 h, which allows for bias‐free operation with a silicon photovoltaic cell. The aqueous formate produced in the enzymatic electrolyzer was subsequently utilized downstream as a C 1 building block in the photocatalytic hydrocarboxylation of alkenes, providing a path for the domino valorization of CO 2 and waste toward bulk and fine chemical synthesis.
Authors: Beverly Q. L. Low, Santiago Rodríguez‐Jiménez, Andrea Rogolino, Samuel J. Cobb, Chen Han, Guilherme Martins, Inês A. C. Pereira, Erwin Reisner
Language: English
Field: Energy
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $5,510
Awards: G1187624108, G2387188075, G3340144160, G4634724399, G4941345466, Ciências da Vida para um Futuro Saudável e Sustentável, G6145639401, Microbiologia Molecular, Estrutural e Celular - – Instituto de Tecnologia Química e Biológica António Xavier, G6450032367, Microbiologia Molecular, Estrutural e Celular - – Instituto de Tecnologia Química e Biológica António Xavier
OpenAlex ID: W4414473355