Ferroelectric Polarization-Enhanced Photocatalysis in BaTiO<sub>3</sub>-TiO<sub>2</sub> Core-Shell Heterostructures
Suppressing charge recombination and improving carrier transport are key challenges for the enhancement of photocatalytic activity of heterostructured photocatalysts. Here, we report a ferroelectric polarization-enhanced photocatalysis on the basis of BaTiO<sub>3</sub>-TiO<sub>2<...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2019-08-01
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| Series: | Nanomaterials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2079-4991/9/8/1116 |
| Summary: | Suppressing charge recombination and improving carrier transport are key challenges for the enhancement of photocatalytic activity of heterostructured photocatalysts. Here, we report a ferroelectric polarization-enhanced photocatalysis on the basis of BaTiO<sub>3</sub>-TiO<sub>2</sub> core-shell heterostructures synthesized via a hydrothermal process. With an optimal weight ratio of BaTiO<sub>3</sub> to TiO<sub>2</sub>, the heterostructures exhibited the maximum photocatalytic performance of 1.8 times higher than pure TiO<sub>2</sub> nanoparticles<sub>.</sub> The enhanced photocatalytic activity is attributed to the promotion of charge separation and transport based on the internal electric field originating from the spontaneous polarization of ferroelectric BaTiO<sub>3.</sub> High stability of polarization-enhanced photocatalysis is also confirmed from the BaTiO<sub>3</sub>-TiO<sub>2</sub> core-shell heterostructures. This study provides evidence that ferroelectric polarization holds great promise for improving the performance of heterostructured photocatalysts. |
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| ISSN: | 2079-4991 |