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Issue 13, 2020
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Twin engineering of photocatalysts: a minireview

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Abstract

Twin crystals with highly ordered atomic arrangement can not only promote the transport of free charge carriers (electrons and holes) inside a single crystalline photocatalyst, but also limit the recombination of photoexcited charge carriers owing to their self-building electrostatic field. Hence, the investigations on twin-dependent photocatalytic performances of crystalline micro-/nanostructures have received much attention in recent years. However, there is still no specialized review article on twin engineering of photocatalysts so far. Herein, the existing twinned micro-/nanostructures, mainly including metal sulfides and metal oxides, are overviewed on the basis of the synthesis engineering, transmission electron microscopy (TEM) characterization and twin-dependent photocatalytic mechanism. Some challenging issues and future directions are also discussed. Expectantly, this minireview would serve as a theoretical guidance for people who are now focusing on twin crystals to design and synthesize novel photocatalysts.

Graphical abstract: Twin engineering of photocatalysts: a minireview

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Article information


Submitted
06 May 2020
Accepted
25 May 2020
First published
25 May 2020

Catal. Sci. Technol., 2020,10, 4164-4178
Article type
Minireview

Twin engineering of photocatalysts: a minireview

S. Sun, X. Zhang, J. Cui, Q. Yang and S. Liang, Catal. Sci. Technol., 2020, 10, 4164
DOI: 10.1039/D0CY00917B

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