MIL-Derived Hollow Tubulous-Shaped In₂O₃/ZnIn₂S₄ Z-Scheme Heterojunction for Efficient Antibacterial Performance via In Situ Composite.

IF 4.4 3区材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Nanomaterials Pub Date : 2024-08-21 DOI:10.3390/nano14161366

Jiao Duan, Hui Zhang, Jie Zhang, Mengmeng Sun, Jizhou Duan

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Abstract

In this study, a hollow tubulous-shaped In₂O₃ derived from MIL (MIL-68 (In)) exhibited an enhanced specific surface area compared to MIL. To further sensitize In₂O₃, ZnIn₂S₄ was grown in situ on the derived In₂O₃. The 40In₂O₃/ZnIn₂S₄ composite (1 mmol ZnIn₂S₄ loaded on 40 mg In₂O₃) exhibited degradation rates of methyl orange (MO) under visible light (80 mW·cm^-2, 150 min) that were 17.9 and 1.4 times higher than those of the pure In₂O₃ and ZnIn₂S₄, respectively. Moreover, the 40In₂O₃/ZnIn₂S₄ exhibited an obviously improved antibacterial performance against Pseudomonas aeruginosa, with an antibacterial rate of 99.8% after visible light irradiation of 80 mW cm^-2 for 420 min. The 40In₂O₃/ZnIn₂S₄ composite showed the highest photocurrent density, indicating an enhanced separation of photogenerated charge carriers. Electron spin resonance results indicated that the 40In₂O₃/ZnIn₂S₄ composite generated both ·O₂^- and ·OH radicals under visible light, whereas ·OH radicals were almost not detected in ZnIn₂S₄ alone, suggesting the presence of a Z-scheme heterojunction between In₂O₃ and ZnIn₂S₄, thereby enhancing the degradation and antibacterial capabilities of the composite. This offers fresh perspectives on designing effective photocatalytic materials for use in antibacterial and antifouling applications.

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通过原位复合实现具有高效抗菌性能的 MIL 制备的空心管状 In2O3/ZnIn2S4 Z 型异质结。

在这项研究中，由 MIL（MIL-68 (In)）衍生出的中空管状 In2O3 与 MIL 相比具有更高的比表面积。为了进一步敏化 In2O3，ZnIn2S4 被原位生长在衍生的 In2O3 上。40In2O3/ZnIn2S4 复合材料（40 毫克 In2O3 上负载 1 毫摩尔 ZnIn2S4）在可见光（80 毫瓦-厘米-2，150 分钟）下的甲基橙（MO）降解率分别是纯 In2O3 和 ZnIn2S4 的 17.9 倍和 1.4 倍。此外，40In2O3/ZnIn2S4 对铜绿假单胞菌的抗菌性能明显提高，在 80 mW cm-2 的可见光照射 420 分钟后，抗菌率达到 99.8%。40In2O3/ZnIn2S4 复合材料显示出最高的光电流密度，表明光生电荷载流子的分离得到了增强。电子自旋共振结果表明，40In2O3/ZnIn2S4 复合材料在可见光下同时产生 -O2- 和 -OH 自由基，而单独使用 ZnIn2S4 时几乎检测不到 -OH 自由基，这表明 In2O3 和 ZnIn2S4 之间存在 Z 型异质结，从而增强了复合材料的降解和抗菌能力。这为设计用于抗菌和防污的有效光催化材料提供了新的视角。

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

Nanomaterials NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

8.50

自引率

9.40%

发文量

3841

审稿时长

14.22 days

期刊介绍： Nanomaterials (ISSN 2076-4991) is an international and interdisciplinary scholarly open access journal. It publishes reviews, regular research papers, communications, and short notes that are relevant to any field of study that involves nanomaterials, with respect to their science and application. Thus, theoretical and experimental articles will be accepted, along with articles that deal with the synthesis and use of nanomaterials. Articles that synthesize information from multiple fields, and which place discoveries within a broader context, will be preferred. There is no restriction on the length of the papers. Our aim is to encourage scientists to publish their experimental and theoretical research in as much detail as possible. Full experimental or methodical details, or both, must be provided for research articles. Computed data or files regarding the full details of the experimental procedure, if unable to be published in a normal way, can be deposited as supplementary material. Nanomaterials is dedicated to a high scientific standard. All manuscripts undergo a rigorous reviewing process and decisions are based on the recommendations of independent reviewers.

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