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首页> 外文期刊>Journal of industrial and engineering chemistry >Enhanced photocatalytic capacity of ZnS-ZnO-Sm2O3 composites for the removal of dyes and antibiotics in visible light region
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Enhanced photocatalytic capacity of ZnS-ZnO-Sm2O3 composites for the removal of dyes and antibiotics in visible light region

机译：增强ZnS-ZnO-SM2O3复合材料的光催化容量，用于去除可见光区域中的染料和抗生素

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摘要

ZnS-ZnO-Sm2O3(Zn-Sm-XY) composites were prepared via the high-temperature calcination of core-shell structured ZnS@Sm2O3 for the enhanced photocatalytic degradation of dyes and antibiotics in visible light region. Effects of calcined temperature, Sm2O3 content, pH value, contaminant concentration, and inorganic ions on the photocatalytic activity were investigated. Ternary Zn-Sm composites exhibit the excellent photocatalytic activity for the visible light driven degradation of tetracycline hydrochloride. Among these composites, Zn-Sm-2B prepared via the heat-treatment of ZnS-Sm2O3 at 673 K shows the best photocatalytic activity for the removal of tetracycline hydrochloride. The enhanced photocatalytic activity of Zn-Sm-2B is also achieved for the visible light driven degradation of methyl orange, methylene blue, and rhodamine B within 20 min. In addition, Zn-Sm-6C calcined from Zn-Sm-C at 1073 K as well as Zn-Sm-2B exhibits excellent photocatalytic activity. center dot OH and center dot O-2 radicals are vital for the enhanced photocatalytic activity of Zn-Sm-2B and Zn-Sm-2B in visible light region, respectively. The lattice defects, sulfur vacancies, and oxygen vacancies facilitate the efficient charge transfer and the rapid separation of electron-hole pairs at the junction interface of Zn-Sm-2B. (C) 2020 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
机译：通过核 - 壳结构ZnS @ SM2O3的高温煅烧制备ZnS-ZnO-SM2O3（Zn-SM-XY）复合材料，用于增强可见光区域中的染料和抗生素的光催化降解。研究了煅烧温度，SM2O3含量，pH值，污染物浓度和无机离子对光催化活性的影响。三元Zn-SM复合材料表现出优异的光催化活性，用于盐酸四环素的盐酸四环素的可见光降解。在这些复合材料中，通过在673k处的ZnS-Sm 2 O 3的热处理制备的Zn-SM-2B显示出用于去除四环素盐酸盐的最佳光催化活性。在20分钟内，还可以获得Zn-SM-2B的增强的光催化活性，用于甲基橙，亚甲基蓝，罗丹明B的可见光驱动降解。另外，在1073k的Zn-SM-C以及Zn-SM-2B中煅烧的Zn-SM-6C表现出优异的光催化活性。中心点OH和中心点O-2基团对于在可见光区域中增强Zn-Sm-2b和Zn-Sm-2b的光催化活性至关重要。晶格缺陷，硫空位和氧空位有助于Zn-SM-2B的结界面处的有效电荷转移和电子空穴对的快速分离。 （c）2020朝鲜工业与工程化学学会。 elsevier b.v出版。保留所有权利。

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