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Passivation of the surface imperfection of TiO2 by using ZIF-8 for efficient carrier separation/transfer

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Abstract

Photoelectrochemical (PEC) water splitting offers a promising chance for energy generation on a global scale. TiO2 is a widely used photoanode material due to its superior properties and stability. However, the PEC efficiency of TiO2 is usually impeded by the fast recombination of photo-generated electron/hole pairs and the poor charge transfer ability that could be improved by band alignment and imperfection passivation, respectively. Herein, we first report that ZIF-8 is an efficient imperfection passivating layer which acts as a bifunctional cocatalyst for transferring/separating electron/hole pairs for improving the photo/photoelectrochemical performance. This work provides a new insight to investigate the charge interaction mechanism between the interface of TiO2 and ZIF-8.

Graphical abstract: Passivation of the surface imperfection of TiO2 by using ZIF-8 for efficient carrier separation/transfer

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Publication details

The article was received on 23 Oct 2017, accepted on 22 Nov 2017 and first published on 23 Nov 2017


Article type: Paper
DOI: 10.1039/C7DT03972G
Citation: Dalton Trans., 2018, Advance Article
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    Passivation of the surface imperfection of TiO2 by using ZIF-8 for efficient carrier separation/transfer

    H. Pi, D. Zhang, X. Zhang, Z. Jin, L. Zhang, X. Cui and W. Zheng, Dalton Trans., 2018, Advance Article , DOI: 10.1039/C7DT03972G

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