Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 144, Issue 14, Pages 6434-6441Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jacs.2c00934
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Funding
- National Natural Science Foundation of China [51825804, 51821006, 21907087, 21725102]
- Fundamental Research Funds for the Central Universities
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The biotic-abiotic photosynthetic system combines inorganic light absorbers with whole-cell biocatalysts, utilizing photoexcited electrons to activate bacterial catalytic networks for sustainable solar-driven chemical transformations.
The biotic-abiotic photosynthetic system integratinginorganic light absorbers with whole-cell biocatalysts innovates theway for sustainable solar-driven chemical transformation. Funda-mentally, the electron transfer at the biotic-abiotic interface, whichmay induce biological response to photoexcited electron stimuli,plays an essential role in solar energy conversion. Herein, weselected an electro-active bacteriumShewanella oneidensisMR-1 as amodel, which constitutes a hybrid photosynthetic system with a self-assembled CdS semiconductor, to demonstrate unique biotic-abiotic interfacial behavior. The photoexcited electrons from CdSnanoparticles can reverse the extracellular electron transfer (EET)chain withinS. oneidensisMR-1, realizing the activation of a bacterialcatalytic network with light illumination. As compared with bareS.oneidensisMR-1, a significant upregulation of hydrogen yield (711-fold), ATP, and reducing equivalent (NADH/NAD+) was achieved in theS. oneidensisMR-1-CdS under visible light. This worksheds light on the fundamental mechanism and provides design guidelines for biotic-abiotic photosynthetic systems.
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