A Semi-artificial Photoelectrochemical Tandem Leaf with a CO2-to-Formate Efficiency Approaching 1 %

• Type: Article in International Scientific Journal
• Date: 2021

Authors

Moore, EE (Author) Other; Andrei, V (Author) Other; Oliveira, AR (Author) Other; Coito, AM (Author) Other; Pereira, IAC (Author) Other; Reisner, E (Author) Other

Journal

Title: Angewandte Chemie - International Edition

ISSN: 1433-7851

Publisher: Wiley-Blackwell

Indexing

ISI Web of Knowledge - 2 Citations

Scopus - 1 Citation

Other information

Authenticus ID: P-00V-J4J

DOI: 10.1002/anie.202110867

Abstract (EN): Semi-artificial photoelectrochemistry can combine state-of-the-art photovoltaic light-absorbers with enzymes evolved for selective fuel-forming reactions such as CO2 reduction, but the overall performance of such hybrid systems has been limited to date. Here, the electrolyte constituents were first tuned to establish an optimal local environment for a W-formate dehydrogenase to perform electrocatalysis. The CO2 reductase was then interfaced with a triple cation lead mixed-halide perovskite through a hierarchically structured porous TiO2 scaffold to produce an integrated photocathode achieving a photocurrent density of -5 mA cm(-2) at 0.4 V vs. the reversible hydrogen electrode during simulated solar light irradiation. Finally, the combination with a water-oxidizing BiVO4 photoanode produced a bias-free integrated biophotoelectrochemical tandem device (semi-artificial leaf) with a solar CO2-to-formate energy conversion efficiency of 0.8 %.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6