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Enhanced Piezo-Photocatalytic Performance of Na₀.₅Bi₄.₅Ti₄O₁₅ by High-Voltage Poling

Lan, Shuang ; Zheng, Mupeng ; Zhuo, Fangping ; Zhu, Mankang ; Hou, Yudong (2023)
Enhanced Piezo-Photocatalytic Performance of Na₀.₅Bi₄.₅Ti₄O₁₅ by High-Voltage Poling.
In: Materials, 2023, 16 (14)
doi: 10.26083/tuprints-00024408
Article, Secondary publication, Publisher's Version

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Item Type: Article
Type of entry: Secondary publication
Title: Enhanced Piezo-Photocatalytic Performance of Na₀.₅Bi₄.₅Ti₄O₁₅ by High-Voltage Poling
Language: English
Date: 24 November 2023
Place of Publication: Darmstadt
Year of primary publication: 2023
Place of primary publication: Basel
Publisher: MDPI
Journal or Publication Title: Materials
Volume of the journal: 16
Issue Number: 14
Collation: 9 Seiten
DOI: 10.26083/tuprints-00024408
Corresponding Links:
Origin: Secondary publication DeepGreen

The internal electric field within a piezoelectric material can effectively inhibit the recombination of photogenerated electron–hole pairs, thus serving as a means to enhance photocatalytic efficiency. Herein, we synthesized a Na₀.₅Bi₄.₅Ti₄O₁₅ (NBT) catalyst by the hydrothermal method and optimized its catalytic performance by simple high-voltage poling. When applying light and mechanical stirring on a 2 kV mm⁻¹ poled NBT sample, almost 100% of Rhodamine B solution could be degraded in 120 min, and the reaction rate constant reached as high as 28.36 × 10⁻³ min⁻¹, which was 4.2 times higher than that of the unpoled NBT sample. The enhanced piezo-photocatalytic activity is attributed to the poling-enhanced internal electric field, which facilitates the efficient separation and transfer of photogenerated carriers. Our work provides a new option and idea for the development of piezo-photocatalysts for environmental remediation and pollutant treatment.

Uncontrolled Keywords: piezo-photocatalysis, Na₀.₅Bi₄.₅Ti₄O₁₅, poling process, piezoelectric effect
Identification Number: 5122
Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-244087
Additional Information:

This article belongs to the Special Issue Electromechanical Effects in Ferroelectric Materials: Theory, Modeling, and Experiments

Classification DDC: 500 Science and mathematics > 540 Chemistry
600 Technology, medicine, applied sciences > 620 Engineering and machine engineering
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials
Date Deposited: 24 Nov 2023 13:21
Last Modified: 04 Jan 2024 07:06
SWORD Depositor: Deep Green
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/24408
PPN: 514433523
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