Catalytic degradation of sulfamethazine by m-Bi<sub>2</sub>O<sub>4</sub> via synergistic piezoelectric-light effect

doi:10.13878/j.cnki.jnuist.20230120001

2025-5-29- 6

Home > Archive>Volume 16, Issue 4, 2024 >553-561. DOI:10.13878/j.cnki.jnuist.20230120001

Catalytic degradation of sulfamethazine by m-Bi2O4 via synergistic piezoelectric-light effect
DOI:
                        10.13878/j.cnki.jnuist.20230120001
                    
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                        ZHU JiaweiZHU Jiawei
School of Environmental Science and Engineering/Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control/Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Nanjing University of Information Science & Technology, Nanjing 210044, China
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CHEN HaoxuanCHEN Haoxuan
School of Environmental Science and Engineering/Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control/Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Nanjing University of Information Science & Technology, Nanjing 210044, China
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LIU FenglingLIU Fengling
School of Environmental Science and Engineering/Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control/Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Nanjing University of Information Science & Technology, Nanjing 210044, China
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GUO ZhaobingGUO Zhaobing
School of Environmental Science and Engineering/Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control/Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Nanjing University of Information Science & Technology, Nanjing 210044, China
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QIU PengxiangQIU Pengxiang
School of Environmental Science and Engineering/Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control/Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Nanjing University of Information Science & Technology, Nanjing 210044, China
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Clc Number:TB332;O643.36
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Abstract:

In this paper,we prepare m-Bi₂O₄ via a simple hydrothermal method,and analyze its structure,morphology,surface valence and piezoelectric photocatalytic performance using characterization methods such as XRD,XPS,SEM,TEM,UV-vis DRS and PFM.Furthermore,we test the piezoelectric photocatalytic activity of the material using sulfamethazine (SM) as a simulated pollutant.The results show that m-Bi₂O₄ outperforms BaTiO₃ and BiOCl in catalytic performance,indicated by its high SM degradation efficiency (96.46%) after 60 min of synergistic piezoelectric-light action,and m-Bi₂O₄ still holds high catalytic activity under weakening light energy.In addition,superoxide radicals with high oxidation activity and a small amount of hydroxyl radicals and singlet oxygen have been captured in the reaction system.We also propose a possible mechanism of piezoelectric photocatalysis.

Key words:m-Bi₂O₄;sulfamethazine (SM);piezoelectric photocatalysis;photocatalysis

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ZHU Jiawei, CHEN Haoxuan, LIU Fengling, GUO Zhaobing, QIU Pengxiang. Catalytic degradation of sulfamethazine by m-Bi₂O₄ via synergistic piezoelectric-light effect[J]. Journal of Nanjing University of Information Science & Technology,2024,16(4):553-561

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Received:January 20,2023
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Online: August 07,2024
Published: July 28,2024

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