Hydrothermal Synthesis of Nanocomposites Combining Tungsten Trioxide and Zinc Oxide Nanosheet Arrays for Improved Photocatalytic Degradation of Organic Dye.

IF 4.4 3区材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Nanomaterials Pub Date : 2025-05-21 DOI:10.3390/nano15100772

Chien-Yie Tsay, Tao-Ying Hsu, Gang-Juan Lee, Chin-Yi Chen, Yu-Cheng Chang, Jing-Heng Chen, Jerry J Wu

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Abstract

Both tungsten trioxide (WO₃) nanosheet arrays and tungsten trioxide/zinc oxide (WO₃/ZnO) nanocomposites were grown on fluorine-doped tin oxide (FTO) coated glass slides using a hydrothermal method to develop a visible-light-driven photocatalyst with easy reusability. Field emission scanning electron microscopy (FE-SEM) observations confirmed the formation of irregular oxide nanosheet arrays on the FTO surfaces. X-ray diffraction (XRD) analysis revealed the presence of hexagonal WO₃ and wurtzite ZnO crystal phases. UV-Vis diffuse reflectance spectroscopy showed that integrating ZnO nanostructures with WO₃ nanosheets resulted in a blue shift of the absorption edge and a reduced absorption capacity in the visible-light region. Photoluminescence (PL) spectra indicated that the WO 0.5/ZnO 2.0 sample exhibited the lowest electron-hole recombination rate among the WO₃/ZnO nanocomposite sample. Photocatalytic degradation tests demonstrated that all WO₃/ZnO nanocomposite samples had higher photodegradation rates for a 10 ppm methylene blue (MB) aqueous solution under visible-light irradiation compared to pristine WO₃ nanosheet arrays. Among them, the WO 0.5/ZnO 2.0 sample showed the highest photocatalytic efficiency. Furthermore, it exhibited excellent recyclability and high photodegradation stability over three cycles.

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水热合成三氧化钨和氧化锌纳米片阵列纳米复合材料改善光催化降解有机染料。

采用水热法在掺氟氧化锡（FTO）镀膜玻片上生长三氧化钨（WO3）纳米片阵列和三氧化钨/氧化锌（WO3/ZnO）纳米复合材料，制备了易于重复使用的可见光驱动光催化剂。场发射扫描电镜（FE-SEM）观察证实在FTO表面形成了不规则的氧化纳米片阵列。x射线衍射（XRD）分析表明，该材料存在六方WO3和纤锌矿ZnO晶体相。紫外-可见漫反射光谱结果表明，ZnO纳米结构与WO3纳米片的结合导致吸收边蓝移，可见光区吸收能力降低。光致发光（PL）光谱结果表明，WO3/ZnO纳米复合样品中wo0.5 /ZnO 2.0样品的电子空穴复合率最低。光催化降解试验表明，与原始WO3纳米片阵列相比，所有WO3/ZnO纳米复合材料样品在可见光照射下对10 ppm亚甲基蓝（MB）水溶液具有更高的光降解率。其中wo0.5 /ZnO 2.0样品的光催化效率最高。此外，在三个循环中，它具有良好的可回收性和高的光降解稳定性。

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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.