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Research Article | Open Access | Just Accepted

Modulating low-frequency tribocatalytic performance through defects in uni-doped and bi-doped SrTiO3

Yijing Xua,Yingzhi Mengc,Xu Xianga,Qing TangaHongfang Zhanga,b( )Laijun LiucJu Gaoa( )Bo XudRenhong LiangeLonglong ShufYanmin JiagWanping Chenh

aSchool of Physical Science and Technology, Suzhou University of Science and Technology, Suzhou, 215009, China

bKey Laboratory of Advanced Electrode Materials for Novel Solar Cells for Petroleum and Chemical Industry of China, Suzhou University of Science and Technology, Suzhou 215009, China

cCollege of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, China

dSchool of Science and Key Laboratory of Biomedical Functional Materials, China Pharmaceutical University, Nanjing 211198, China

eSchool of Physics and Materials Science, Guangzhou University, Guangzhou 510006, China

fSchool of Physics and Materials Science, Nanchang University, Nanchang 330031, China

gSchool of Physics and Information Technology, Shaanxi Normal University, Xi’an 710062, China

hSchool of Physics and Technology, Wuhan University, Wuhan 430072, China

Yingzhi Meng and Xu Xiang have the same contributions as Yijing Xu.

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Abstract

Triboelectrification, a process that transforms mechanical energy into electrical energy through friction, holds promise for eco-friendly wastewater treatment. This study delves into the enhancement of tribocatalytic dye degradation using SrTiO₃, a material notable for its non-piezoelectric and centrosymmetric properties. The synthesis of uni- and bi-doped SrTiO₃ particles, achieved through a solid-state reaction at 1000 °C, results in a high-purity cubic perovskite structure. Doping with Rhodium (Rh) and Carbon (C) causes crystal lattice contraction, internal stress, and significant oxygen vacancies. These changes notably improve tribocatalytic efficiency under solar irradiation, with Rh-doped SrTiO₃ demonstrating an impressive degradation rate of approximately 88% for RhB, alongside reaction rate constants nearing 0.9 h⁻¹ at 554 nm and a noticeable blue shift. The study highlights that defects introduced by doping are integral to this process, boosting catalytic activity through energy state modification and enhancing surface redox radical production. Additionally, these defects are instrumental in generating a flexoelectric field, which markedly influences the separation of electron-hole pairs under solar irradiation. Our findings illuminate the complex interplay between material composition, defect states, and environmental conditions, paving the way for advanced strategies in environmental remediation through optimized tribocatalytic activity.

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Journal of Advanced Ceramics
Cite this article:
Xu Y, Meng Y, Xiang X, et al. Modulating low-frequency tribocatalytic performance through defects in uni-doped and bi-doped SrTiO3. Journal of Advanced Ceramics, 2024, https://doi.org/10.26599/JAC.2024.9220925

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Received: 04 April 2024
Revised: 21 May 2024
Accepted: 06 June 2024
Available online: 09 June 2024

© The author(s) 2024

The articles published in this open access journal are distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/).

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