Study on the sonocatalytic removal of tetracycline by an type-II heterojunction CuS/FeWO4

IF 6.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL Journal of Alloys and Compounds Pub Date : 2025-02-10 Epub Date: 2025-01-26 DOI:10.1016/j.jallcom.2025.178826

Liang Xu , Ying-Di Ge , Xin-Yi Zhou , Mei-Yi Xing , Xue-Qian Wu , Yang Wang , Lin Zhang , Xin Wang

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Abstract

In this study, CuS/FeWO₄ composites were prepared by hydrothermal method, and the micro-morphological form, structural properties and light absorption capacity of the prepared samples were characterized by various technical means. The sonocatalytic activity of CuS/FeWO₄ composites was investigated through the removal of tetracycline. It was obtained that the CuS/FeWO₄ heterojunction formed by the combination of FeWO₄ spherical particles and CuS lamellar nanoparticles yields excellent sonocatalytic performance. Under the experimental conditions of 1.0 mg/mL of CuS/FeWO₄ sonocatalyst, 15 mg/L of TCL solution, 6.5 pH of TCL solution, 500 W of ultrasonic power, 50 kHz of ultrasonic frequency, and 120 min of ultrasonic time, the removal rate of TCL by CuS/FeWO₄ sonocatalyst reached 98.9 % ± 0.3 %. Compared to bare FeWO₄, the CuS/FeWO₄ heterojunction exhibited significantly higher sonocatalytic activity for the removal of TCL. The improved sonocatalytic activity was attributed to the built-in electric field effect resulting from the type-II heterojunction, which promoted the efficient separation of electron-hole pairs. After 4 cycles, the removal rate of TCL showed excellent stability and reusability. The results showed that type-II CuS/FeWO₄ heterojunction is a novel and efficient sonocatalyst, which is expected to be used in the field of environmental governance.

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ⅱ型异质结cu /FeWO4声催化脱除四环素的研究

本研究采用水热法制备了cu /FeWO4复合材料，并通过各种技术手段对制备样品的微观形态、结构性能和光吸收能力进行了表征。通过对四环素的去除，考察了cu /FeWO4复合材料的声催化活性。结果表明，FeWO4球形颗粒与cu片层状纳米颗粒结合形成的cu /FeWO4异质结具有优异的声催化性能。在cu /FeWO4声催化剂浓度为1.0 mg/mL、TCL溶液浓度为15 mg/L、TCL溶液pH为6.5、超声功率为500 W、超声频率为50 kHz、超声时间为120 min的实验条件下，cu /FeWO4声催化剂对TCL的去除率可达98.9%±0.3%。与裸FeWO4相比，cu /FeWO4异质结对TCL的声催化活性显著提高。声催化活性的提高是由于ii型异质结产生的内置电场效应，促进了电子-空穴对的有效分离。经过4个循环后，TCL的去除率表现出良好的稳定性和可重用性。结果表明，ii型cu /FeWO4异质结是一种新型高效的声催化剂，有望应用于环境治理领域。

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来源期刊

Journal of Alloys and Compounds 工程技术-材料科学：综合

CiteScore

11.10

自引率

14.50%

发文量

5146

审稿时长

67 days

期刊介绍： The Journal of Alloys and Compounds is intended to serve as an international medium for the publication of work on solid materials comprising compounds as well as alloys. Its great strength lies in the diversity of discipline which it encompasses, drawing together results from materials science, solid-state chemistry and physics.