Living Photoanodes for Solar-Driven Water Oxidation
Rachel M. Egan, Angelo J. Victoria, Jenny Z. Zhang
TL;DR
This review explores living photoanodes, which use photosynthetic microorganisms to convert solar energy into electricity or chemicals in sustainable technologies.
Contribution
The paper provides a comprehensive review of recent advancements and strategies in developing living photoanodes for solar-driven water oxidation.
Findings
Cyanobacteria are central to the photocatalytic and electron transport processes in living photoanodes.
Theoretical models help estimate the maximum photocurrent outputs of these systems.
Genetic engineering and electrode design are key strategies to enhance performance.
Abstract
Photosynthetic microorganisms are abundant, self-sustaining catalysts that convert solar energy into high energy electrons. By interfacing these living catalysts with electrodes, these electrons can be harnessed for electricity generation or chemical production in sustainable solar-powered technologies. The development of these so-called living photoanodes is an emerging and highly interdisciplinary field that has progressed substantially in recent years. In this review, we chart these advancements, beginning with our current understanding of the fundamental biology underpinning the key photocatalytic and electron transport processes of oxygenic photosynthetic microorganismsnamely cyanobacteria. We then describe theoretical approaches to estimating the maximum obtainable photocurrent outputs of living photoanodes to gauge their technological potential. Next, we discuss the main…
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Taxonomy
TopicsTiO2 Photocatalysis and Solar Cells · Solar-Powered Water Purification Methods · Iron oxide chemistry and applications