Exceptional degradation of organic pollutant through piezoelectric photocatalysis and peroxymonosulfate activation in the designed Bi4O5Br2/BCZT S-scheme heterojunction

IF 9.6 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Rare Metals Pub Date : 2025-03-04 DOI:10.1007/s12598-024-03203-9

Feng Huang, Wen-Lin Wang, Gang Li, Muhammad Humayun, Qian Yu, Yan Wang, Chun-Dong Wang, Jing Wang

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Abstract

Peroxymonosulfate (PMS) is commonly used in advanced oxidation processes to degrade organic pollutants in wastewater. In this work, to obtain better PMS activation efficiency, Bi₄O₅Br₂/BCZT (BBT) piezoelectric photocatalyst was designed. Abundant active radicals produced by BBT under visible light irradiation and ultrasonic vibration were used to activate PMS, thereby achieving rapid degradation of high concentration pollutants. With the introduction of BCZT, the catalyst has a strong internal electric field and three-dimensional lamellar structure, which promotes the separation and transfer of electrons and holes. It is worth noting that under optimal reaction conditions, the degradation rate of ARB reached 93% by BBT15 within 10 min. The catalytic experiment combined with the piezoelectric performance test results revealed the key role of piezoelectric photocatalytic reaction in PMS activation. This provides an important prospect for PMS to effectively deal with the degradation of high concentrations of organic pollutants.

Graphical abstract

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在设计的Bi4O5Br2/BCZT S-scheme异质结中，压电光催化和过氧单硫酸盐活化对有机污染物的特殊降解

过氧单硫酸根（PMS）在深度氧化过程中被广泛用于降解废水中的有机污染物。为了获得更好的PMS活化效率，设计了Bi4O5Br2/BCZT （BBT）压电光催化剂。利用BBT在可见光照射和超声振动下产生的丰富活性自由基活化PMS，实现对高浓度污染物的快速降解。引入BCZT后，催化剂具有强大的内部电场和三维片层结构，促进了电子和空穴的分离和转移。值得注意的是，在最优反应条件下，BBT15在10 min内对ARB的降解率达到93%。催化实验结合压电性能测试结果揭示了压电光催化反应在PMS活化中的关键作用。这为PMS有效处理高浓度有机污染物的降解提供了重要前景。图形抽象

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Rare Metals 工程技术-材料科学：综合

CiteScore

12.10

自引率

12.50%

发文量

2919

审稿时长

2.7 months

期刊介绍： Rare Metals is a monthly peer-reviewed journal published by the Nonferrous Metals Society of China. It serves as a platform for engineers and scientists to communicate and disseminate original research articles in the field of rare metals. The journal focuses on a wide range of topics including metallurgy, processing, and determination of rare metals. Additionally, it showcases the application of rare metals in advanced materials such as superconductors, semiconductors, composites, and ceramics.