Photocatalytic hydrogen production using recombinant escherichia coli-conjugated polymer nanoparticle biohybrid systems Ying Yang 1, Reiner Sebastian Sprick 4 , Lu-Ning Liu 2,3 , Andrew I. Cooper 1 1 University of Liverpool, UK, 2 Molecular and Integrative Biology, University of Liverpool, UK 3 Ocean University of China, P. R. China, 4 University of Strathclyde, UK Biohybrid photosynthesis is aimed to combine the light-absorbing ability of synthetic materials and efficient metabolic pathways in biological systems to convert sunlight into solar fuels or high-value chemicals. 1 As such, it has attracted significant interest over the last 10 years for solar-to-chemical energy conversion. Advances in artificial photosynthesis and synthetic biology have brought significant breakthroughs in terms of productivity and efficiency. However, discussions in this area mainly focus on electro-catalysed 2,3 and photoelectron-catalysed 4 hybrid systems rather than purely photocatalytic systems. With the development of new photocatalysts, especially organic photocatalysts 5 in the last five years, this poster will discuss the potential of conjugated polymers as photosensitiser materials in biological hybrid systems. These hybrid systems result synergies with significant enhancement of hydrogen evolution rates under visible light irradiation. Furthermore, the presentation explores possible electron/energy transfer pathways by combining spectroscopic and metabolic analysis, which is an area that has not been explored much to date resulting in poor understanding. References 1. Kornienko, N., Zhang, J. Z., Sakimoto, K. K., Yang, P. & Reisner, E. Interfacing nature’s catalytic machinery with synthetic materials for semi-artificial photosynthesis. Nat. Nanotechnol. 13, 890–899 (2018). 2. Rabaey, K. & Rozendal, R. A. Microbial electrosynthesis - Revisiting the electrical route for microbial production. Nat. Rev. Microbiol. 8, 706–716 (2010). 3. Lovley, D. R. Bug juice: harvesting electricity with microorganisms. Nat. Rev. Microbiol. 4, 497–508 (2006). 4. Nichols, E. M. et al. Hybrid bioinorganic approach to solar-tochemical conversion. Proc. Natl. Acad. Sci. U. S. A. 112, 11461–11466 (2015). 5. Banerjee, T., Podjaski, F., Kröger, J., Biswal, B. P. & Lotsch, B. V. Polymer photocatalysts for solar-to-chemical energy conversion. Nature Reviews Materials (2020) doi:10.1038/s41578-020-00254-z.
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