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Issue 35, 2020
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Enhancing photoelectrochemical performance of the Bi2MoO6 photoanode by ferroelectric polarization regulation

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Abstract

Photoelectrochemical water splitting provides a promising strategy for converting solar energy into chemical fuels and has attracted extensive interest. Herein, Bi2MoO6 nanopillars with large surface areas were fabricated on an ITO-coated glass substrate and their photoelectrochemical properties are enhanced through appropriate manipulation of ferroelectric polarization. The Bi2MoO6 photoanode with polarization orientation toward ITO shows an enhanced photocurrent density of 250 μA cm−2 at 1.23 V vs. reversible hydrogen electrode, which is 28% higher than that of pristine Bi2MoO6 nanopillars without macroscopic polarization. The corresponding depolarization electric field benefits the separation of light-excited electron–hole pairs, thus minimizing the recombination of charge carriers and further enhancing the photocurrent current density. Our work offers a new strategy of Bi2MoO6-based photoelectrochemical devices with great potential of application in the conversion of solar energy into chemical fuels.

Graphical abstract: Enhancing photoelectrochemical performance of the Bi2MoO6 photoanode by ferroelectric polarization regulation

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Supplementary files

Article information


Submitted
09 Apr 2020
Accepted
25 Jul 2020
First published
04 Aug 2020

Nanoscale, 2020,12, 18446-18454
Article type
Paper

Enhancing photoelectrochemical performance of the Bi2MoO6 photoanode by ferroelectric polarization regulation

Z. Xie, Z. Cui, J. Shi, C. Lin, K. Zhang, G. Yuan and J. Liu, Nanoscale, 2020, 12, 18446
DOI: 10.1039/D0NR02809F

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