ACS Appl Mater Interfaces
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Luoshi Road No. 122, Wuhan 430070, China.
Published: January 2023
Natural photosynthesis involves an efficient charge-transfer pathway through exquisitely arranged photosystems and electron transport intermediates, which separate photogenerated carriers to realize high quantum efficiency. It inspires a rational design construction of artificial photosynthesis systems and the architectures of semiconductors are essential to achieve optimal performance. Of note, biomineralization processes could form various mesocrystals with well-ordered superstructures for unique optical applications. Inspired by both natural photosynthesis and biomineralization, we construct a ternary superstructure-based mesocrystal TiO (meso-TiO)/Au/CdS artificial photosynthesis system by a green photo-assisted method. The well-ordered superstructure of meso-TiO and efficient charge-transfer pathway among the three components are crucial for retarding charge recombination. As a result, the meso-TiO/Au/CdS photocatalyst displays enhanced visible light-driven photocatalytic hydrogen evolution (4.60 mmol h g), which is 3.2 times higher than that of commercial TiO (P25)/Au/CdS with disordered TiO nanocrystal aggregates (1.41 mmol h g). This work provides a promising bioinspired design strategy for photocatalysts with an improved solar conversion efficiency.
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http://dx.doi.org/10.1021/acsami.2c19692 | DOI Listing |
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