Mechanism insights into radical driven antibiotic degradation and green H2O2 production of Al2O3/g-C3N5 piezocatalyst

Yang Lili; Zhao Wenxuan; Xu Hongwei; Xu Mingyang; Guo Chenxi; Zhu Zhaoyou; Wang Yinglong; Meng Fanqing

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Mechanism insights into radical driven antibiotic degradation and green H₂O₂ production of Al₂O₃/g-C₃N₅ piezocatalyst

Updated：2026-05-14

- Mechanism insights into radical driven antibiotic degradation and green H₂O₂ production of Al₂O₃/g-C₃N₅ piezocatalyst
- Chinese Journal of Chemical Engineering Vol. 90, Issue 2, Pages: 121-134(2026)
- Affiliations：
  
  College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
- Author bio：
  
  These authors contributed equally to this work.
  Corresponding author. E-mail address: fqmeng19@163.com (F. Meng).
- Funds：
- DOI：
  CLC：
- Received：15 July 2025，
  
  Revised：2025-09-07，
  
  Accepted：10 September 2025，
  
  Online First：08 November 2025，
  
  Published：2026-02
- Accepted：
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Yang Lili, Zhao Wenxuan, Xu Hongwei, et al. Mechanism insights into radical driven antibiotic degradation and green H₂O₂ production of Al₂O₃/g-C₃N₅ piezocatalyst[J]. Chinese Journal of Chemical Engineering, 2026, 90(2): 121-134.
DOI：

Yang Lili, Zhao Wenxuan, Xu Hongwei, et al. Mechanism insights into radical driven antibiotic degradation and green H₂O₂ production of Al₂O₃/g-C₃N₅ piezocatalyst[J]. Chinese Journal of Chemical Engineering, 2026, 90(2): 121-134. DOI：

摘要

Abstract

The widespread presence of antibiotics in the environment has raised significant public health concerns

as it leads to the appearance of antibiotic-resistant genetic elements and bacteria. In this study

a novel Al

/g-C

composite piezocatalyst was synthesized

via

a two-step thermal polymerization method

aiming to enhance the efficiency of piezocatalytic degradation of tetracycline (TC) and

in-situ

hydrogen peroxide (H

) generation. The Al

modification significantly improved the piezoelectric properties

charge separation efficiency

and catalytic activity of g-C

. Under ultrasonic vibration

the composite achieved a H

production rate of 582.28 μmol·g

-1

·h

-1

and a TC degradation rate of 94% within 40 min

maintaining 86% efficiency after four cycles. Quenching experiment and EPR spectroscopy verified the key roles of·OH

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=108582925&type=

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=108582925&type=small

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=108582925&type=middle

and e -in the degradation mechanism. Density functional theory (DFT) calculations further elucidated the reactive sites on the TC molecule. Under ultrasonic mechanical vibration conditions

the catalytic performance of the catalyst in pressure generation was systematically evaluated

with a focus on its hydrogen peroxide production capacity and degradation performance for TC. The Al

/g-C

catalyst also demonstrated broad-spectrum degradation capability against various antibiotics and excellent antibacterial activity against

coli

. This work provides an effective strategy for designing high-performance piezocatalysts for environmental remediation and sustainable wastewater treatment.

关键词

Keywords

references

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