Biomineralization induced synthesis and self-assembly of photocatalyst-enzyme hybrid system for highly efficient environmental remediation

The photocatalyst-enzyme hybrid systems (PEHSs) provided a promising method for environmental remediation by simultaneously harnessing the power of solar-energy conversion and biocatalysis. However, the use of PEHSs for environmental remediation was restricted by a complicated synthesis and assembly...

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Bibliographic Details
Published inApplied catalysis. B, Environmental Vol. 351; p. 124015
Main Authors Wang, Yan-Zhai, Shah, Syed Bilal, Liu, Jun-Ying, Hu, Hao, Yong, Yang-Chun
Format Journal Article
LanguageEnglish
Published Elsevier B.V 15.08.2024
Subjects
Biomineralization
Environmental remediation
Organic dyes
Photocatalysis
Photocatalyst-enzyme hybrid system
Biomineralization
Environmental remediation
Photocatalyst-enzyme hybrid system
Organic dyes
Photocatalysis
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Summary:The photocatalyst-enzyme hybrid systems (PEHSs) provided a promising method for environmental remediation by simultaneously harnessing the power of solar-energy conversion and biocatalysis. However, the use of PEHSs for environmental remediation was restricted by a complicated synthesis and assembly process. This work explored a simple one-pot biomineralization approach to fabricate PEHS. It was found that the cytochrome enzyme could be directly self-assembled onto the biosynthesized CdS during biomineralization by Shewanella oneidensis MR-1. More strikingly, those attached cytochrome enzymes could efficiently receive the photoelectrons from the CdS and serve as the photoreduction center which formed a typical PEHS. Impressively, this bio-CdS-cytochrome PEHS exhibited an extremely high photocatalytic decolorization rate of 69.4 mg/g/min, which was the highest record ever reported for procion red H-E3B. This work provided a simple and facile approach for PEHSs fabrication, which would be promising for practical application in environmental remediation. [Display omitted] •New approach for photocatalyst-enzyme hybrid system (PEHS) fabrication was explored.•The PEHS exhibited extremely high photocatalytic decolorization efficiency.•The cytochrome enzyme played key role on photocatalysis of PEHS.•The highest photo-decolorization rate of procion red H-E3B was obtained.
ISSN:0926-3373
1873-3883
DOI:10.1016/j.apcatb.2024.124015