原位构建Bi5O7I/ZIF-8异质结高效吸附-光催化协同降解四环素

IF 23.2 2区 材料科学 Q1 MATERIALS SCIENCE, COMPOSITES Advanced Composites and Hybrid Materials Pub Date : 2024-12-17 DOI:10.1007/s42114-024-01116-w
Rongfei Jiang, Weiqi Luo, Jinyang Peng, Jijun Tang, Xinyue Wang, Jiaoxia Zhang, Adel Qlayel Alkhedaide, Yihui Teng, Qiuyang Dai, Guicheng Gao, Zeinhom M. El-Bahy, Mohammed A. Amin, Yonglin Ye
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引用次数: 0

摘要

废水中残留的有机物如抗生素和染料等难以去除。本文报道了一种具有s型异质结的氧化铋(Bi5O7I)/咪唑酸分子筛框架-8 (ZIF-8)催化剂,用于原位生长策略降解四环素(TC)。TC的降解过程分为吸附和光催化两部分。在暗反应条件下,Bi5O7I/ZIF-8复合材料对TC有显著的吸附效果。在可见光下,Bi5O7I/ZIF-8复合材料对TC的降解表现出优异的光催化活性和高稳定性。利用活性物质捕获的实验表明,O2在光催化过程中是必不可少的,h+和•OH的加入进一步提高了该过程的效率。同样,这些催化剂催化降解了84.6%的TC,并且经过4次循环试验,Bi5O7I/ZIF-8也表现出较高的降解稳定性。这项工作通过提出一种实用可行的方法来创建绿色半导体异质结,从而优化了抗生素残留物的降解性能。
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A highly efficient adsorption-photocatalytic synergistic degradation of tetracycline by in-situ constructed Bi5O7I/ZIF-8 heterojunction

Residue organic matter such as antibiotics and dyes are left in wastewater that are difficult to remove. Herein, we reported a bismuth oxyiodide (Bi5O7I)/zeolite imidazolate framework-8 (ZIF-8) catalyst with an S-scheme heterojunction for the degradation of tetracycline (TC) using an in-situ growth strategy. The degradation process of TC is divided into two parts: adsorption and photocatalysis. Under dark reaction conditions, the Bi5O7I/ZIF-8 composites have an eminent adsorption effect on TC. When exposed to visible light, the resulting Bi5O7I/ZIF-8 composites revealed an outstanding photocatalytic activity and high stability toward TC degradation. Experiments utilizing active species trapping showed that O2 is essential to the photocatalytic process and the efficacy of the process is further improved by the addition of h+ and •OH. Likewise, these catalysts catalyzed the degradation of 84.6% of TC, and the Bi5O7I/ZIF-8 also exhibited high degradation stability after 4-cycle trial. This work optimizes the degradation performance of antibiotic residues by presenting a practical and doable approach for creating green semiconductor heterojunctions.

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来源期刊
CiteScore
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自引率
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发文量
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期刊介绍: Advanced Composites and Hybrid Materials is a leading international journal that promotes interdisciplinary collaboration among materials scientists, engineers, chemists, biologists, and physicists working on composites, including nanocomposites. Our aim is to facilitate rapid scientific communication in this field. The journal publishes high-quality research on various aspects of composite materials, including materials design, surface and interface science/engineering, manufacturing, structure control, property design, device fabrication, and other applications. We also welcome simulation and modeling studies that are relevant to composites. Additionally, papers focusing on the relationship between fillers and the matrix are of particular interest. Our scope includes polymer, metal, and ceramic matrices, with a special emphasis on reviews and meta-analyses related to materials selection. We cover a wide range of topics, including transport properties, strategies for controlling interfaces and composition distribution, bottom-up assembly of nanocomposites, highly porous and high-density composites, electronic structure design, materials synergisms, and thermoelectric materials. Advanced Composites and Hybrid Materials follows a rigorous single-blind peer-review process to ensure the quality and integrity of the published work.
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