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. 2023 Dec;18(12):e2300084.
doi: 10.1002/biot.202300084. Epub 2023 Sep 22.

Fe3 O4 nanozyme coating enhances light-driven biohydrogen production in self-photosensitized Shewanella oneidensis-CdS hybrid systems

Yuelei Wang  1 , Yuqi Liu  1 , Na Zhao  1 , Jueyu Wang  1 , Yue Yang  1 , Daizong Cui  1 , Min Zhao  1
Affiliations

Fe3 O4 nanozyme coating enhances light-driven biohydrogen production in self-photosensitized Shewanella oneidensis-CdS hybrid systems

Yuelei Wang et al. Biotechnol J. 2023 Dec.

Abstract

Solar-driven biohybrid systems that produce chemical energy are a valuable objective in ongoing research. However, reactive oxygen species (ROS) that accompany nanoparticle production under light radiation severely affect the efficiency of biohybrid systems. In this study, we successfully constructed a two-hybrid system, Shewanella oneidensis-CdS and S. oneidensis-CdS@Fe3 O4 , in a simple, economical, and gentle manner. With the Fe3 O4 coating, ROS were considerably eliminated; the hydroxyl radical, superoxide radical, and hydrogen peroxide contents were reduced by 66.7%, 65.4%, and 72%, respectively, during light-driven S. oneidensis-CdS hydrogen production. S. oneidensis-CdS@Fe3 O4 showed a 2.6-fold higher hydrogen production (70 h) than S. oneidensis-CdS. Moreover, the S. oneidensis-CdS system produced an additional 367.8 μmol g-dcw-1 (70 h) of hydrogen compared with S. oneidensis during irradiation. The apparent quantum efficiencies of S. oneidensis-CdS and S. oneidensis-CdS@Fe3 O4 were 6.2% and 11.5%, respectively, exceeding values previously reported. In conclusion, a stable nanozyme coating effectively inhibited the cytotoxicity of CdS nanoparticles, providing an excellent production environment for bacteria. This study provides a rational strategy for protecting biohybrid systems from ROS toxicity and contributes to more efficient solar energy conversion in the future.

Keywords: Fe3O4 nanozyme; ROS; Shewanella oneidensis-CdS; hydrogen production; nanoparticles.

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References

REFERENCES

    1. Staffell, I., Scamman, D., Abad, A. V., Balcombe, P., Dodds, P. E., Ekins, P., Shah, N., & Ward, K. R. (2019). The role of hydrogen and fuel cells in the global energy system. Energy & Environmental Science, 12, 463-491.
    1. Kim, J. H., Hansora, D., Sharma, P., Jang, J. W., & Lee, J. S. (2019). Toward practical solar hydrogen production-an artificial photosynthetic leaf-to-farm challenge. Chemical Society Reviews, 48, 1908-1971.
    1. Sahoo, P. C., Pant, D., Kumar, M., Puri, S. K., & Ramakumar, S. S. V. (2020). Material-microbe interfaces for solar-driven CO2 bioelectrosynthesis. Trends in Biotechnology, 38, 1245-1261.
    1. Cestellos-Blanco, S., Zhang, H., Kim, J. M., Shen, Y. X., & Yang, P. D. (2020). Photosynthetic semiconductor biohybrids for solar-driven biocatalysis. Nature Catalysis, 3, 245-255.
    1. Sakimoto, K. K., Wong, A. B., & Yang, P. D. (2016). Self-photosensitization of nonphotosynthetic bacteria for solar-to-chemical production. Science, 351, 74-77.

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