Photosystem II-Carbon Nitride Photoanodes for Scalable Biophotoelectrochemistry
Date
2025
Authors
Zhang, H.
Tian, W.
Lin, J.
Zhang, P.
Shao, G.
Ravi, S.K.
Sun, H.
Cortés, E.
Andrei, V.
Wang, S.
Editors
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
Journal article
Citation
Advanced Materials, 2025; e08813-1-e08813-11
Statement of Responsibility
Huayang Zhang, Wenjie Tian, Jingkai Lin, Peng Zhang, Guosheng Shao, Sai Kishore Ravi, Hongqi Sun, Emiliano Cortés, Virgil Andrei, and Shaobin Wang
Conference Name
Abstract
Photosystem II (PSII) is a vital photosynthetic enzyme with the potential for sustainable bioelectricity and fuel generation. However, interfacing PSII with intricate, small-scale electrodes for practical applications has been challenging. This study addresses this by creating protonated macroporous carbon nitride (MCN) as support and developing a scalable spray-freeze method to wire PSII with MCN. This facilitates the production of large-area MCN-PSII photoanodes up to 33 cm² for biophotoelectrochemical water oxidation to O², achieving efficient interfacial charge transfer and initial photocurrents in the mA range with Faradaic yield of 93.5 ± 8.5% over 5 h. A bias-free biophotoelectrochemical (BPEC) device is designed by connecting the MCN-PSII photoanode to a carbon nanotube cathode loaded with bilirubin oxidase. An array of eight tandem BPEC cells with a photoactive area of 72 cm² successfully powers low-power electronics, such as LEDs. This work paves an efficient way for bioelectrode fabrication, showcasing the potential of PSII-based semi-artificial systems for BPEC and biophotovoltaic applications.
School/Discipline
Dissertation Note
Provenance
Description
OnlinePubl.
Available online 15 August 2025
Access Status
Rights
© 2025 The Author(s). Advanced Materials published by Wiley-VCH GmbH. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.