1. Ba 2+ -doping introduced piezoelectricity and efficient Ultrasound-Triggered bactericidal activity of brookite TiO 2 nanorods.
- Author
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Han Y, Zhang H, Yang R, Yu X, Marfavi Z, Lv Q, Zhang G, Sun K, Yuan C, and Tao K
- Subjects
- Ultrasonic Waves, Reactive Oxygen Species metabolism, Reactive Oxygen Species chemistry, Microbial Sensitivity Tests, Surface Properties, Particle Size, Catalysis, Wastewater chemistry, Titanium chemistry, Titanium pharmacology, Nanotubes chemistry, Anti-Bacterial Agents pharmacology, Anti-Bacterial Agents chemistry, Escherichia coli drug effects
- Abstract
Exploring highly efficient ultrasound-triggered catalysts is pivotal for various areas. Herein, we presented that Ba
2+ doped brookite TiO2 nanorod (TiO2 : Ba) with polarization-induced charge separation is a candidate. The replacement of Ba2+ for Ti4+ not only induced significant lattice distortion to induce polarization but also created oxygen vacancy defects for facilitating the charge separation, leading to high-efficiency reactive oxygen species (ROS) evolution in the piezo-catalytic processes. Furthermore, the piezocatalytic ability to degrade dye wastewater demonstrates a rate constant of 0.172 min-1 and achieves a 100 % antibacterial rate at a low dose for eliminating E. coli. This study advances that doping can induce piezoelectricity and reveals that lattice distortion-induced polarization and vacancy defects engineering can improve ROS production, which might impact applications such as water disinfection and sonodynamic therapy., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 Elsevier Inc. All rights reserved.)- Published
- 2024
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