Construction of Z‐scheme 1T/2H‐MoS2/CdS for improving photocatalytic degradation of antibiotic residues

IF 2.6 4区工程技术 Q3 ELECTROCHEMISTRY

Fuel Cells Pub Date : 2024-05-11 DOI:10.1002/fuce.202400040

Y. R. Liu, J. H. Wu, X. Z. Wang, C. Y. Li, Y. X. Cai, H. H. Xing, S. S. Xia, J. Q. Zhao, W. Zhao, Z. Chen

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引用次数: 0

Abstract

1T/2H‐MoS2/CdS composite was effectively prepared by a two‐step hydrothermal method, which greatly improved the photocatalytic degradation efficiency of tetracycline hydrochloride and photocatalytic cycle stability compared with pristine 1T/2H‐MoS2. The highest photodegradation efficiency of 70.8% is achieved when the molar ratio of 1T/2H‐MoS2 to cadmium sulfide is 1:4. The capture experiment indicates that hydroxyl radical (⋅OH) and superoxide radical (⋅O2−) play a role in the photocatalytic degradation process. A Z‐type heterojunction may be formed on the 1T/2H‐MoS2/CdS composite based on a series of analyses, which improves the photocatalytic performance effectively via expanding the range of light response and promoting the separation of photogenerated electrons and holes. This work provides an alternative to constructing novel Z‐scheme photocatalysts with high performance in the absence of noble metals.

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构建 Z 型 1T/2H-MoS2/CdS 以提高抗生素残留物的光催化降解能力

通过两步水热法有效制备了1T/2H-MoS2/CdS复合材料，与原始1T/2H-MoS2相比，大大提高了盐酸四环素的光催化降解效率和光催化循环稳定性。当 1T/2H-MoS2 与硫化镉的摩尔比为 1:4 时，光降解效率最高，达到 70.8%。捕获实验表明，羟基自由基（⋅OH）和超氧自由基（⋅O2-）在光催化降解过程中发挥了作用。根据一系列分析，1T/2H-MoS2/CdS 复合材料上可形成 Z 型异质结，通过扩大光响应范围和促进光生电子和空穴的分离，有效提高光催化性能。这项工作为在不使用贵金属的情况下构建具有高性能的新型 Z 型光催化剂提供了一种选择。

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来源期刊

Fuel Cells 工程技术-电化学

CiteScore

5.80

自引率

3.60%

发文量

审稿时长

3.7 months

期刊介绍： This journal is only available online from 2011 onwards. Fuel Cells — From Fundamentals to Systems publishes on all aspects of fuel cells, ranging from their molecular basis to their applications in systems such as power plants, road vehicles and power sources in portables. Fuel Cells is a platform for scientific exchange in a diverse interdisciplinary field. All related work in -chemistry- materials science- physics- chemical engineering- electrical engineering- mechanical engineering- is included. Fuel Cells—From Fundamentals to Systems has an International Editorial Board and Editorial Advisory Board, with each Editor being a renowned expert representing a key discipline in the field from either a distinguished academic institution or one of the globally leading companies. Fuel Cells—From Fundamentals to Systems is designed to meet the needs of scientists and engineers who are actively working in the field. Until now, information on materials, stack technology and system approaches has been dispersed over a number of traditional scientific journals dedicated to classical disciplines such as electrochemistry, materials science or power technology. Fuel Cells—From Fundamentals to Systems concentrates on the publication of peer-reviewed original research papers and reviews.