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首页> 外文期刊>RSC Advances >Microwave-assisted hydrothermal synthesis of chrysanthemum-like Ag/ZnO prismatic nanorods and their photocatalytic properties with multiple modes for dye degradation and hydrogen production
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Microwave-assisted hydrothermal synthesis of chrysanthemum-like Ag/ZnO prismatic nanorods and their photocatalytic properties with multiple modes for dye degradation and hydrogen production

机译：微波辅助水热合成菊花样Ag / ZnO棱镜纳米棒及其光催化性能，具有多种染料降解和氢气生产

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摘要

A series of Ag/ZnO composites were prepared by microwave-assisted hydrothermal synthesis. Their composition, structure, and morphology were well characterized by X-ray diffraction (XRD), UV-visible diffuse reflectance spectroscopy (UV-vis/DRS), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and N-2 adsorption-desorption analyses. The results showed that the microwave-assisted synthesis method did not significantly alter the crystal structure of the composites. However, light absorption by the composite was clearly enhanced, its Brunauer-Emmett-Teller surface area values changed, and excellent surface morphology was observed. Moreover, the Ag/ZnO composite formed via microwave-assisted hydrothermal synthesis exhibited more regular stacking piled into a chrysanthemum-like structure. Under ultraviolet, visible-light, simulated sunlight, and microwave-assisted irradiation, the composite exhibited better photocatalytic properties for the photocatalytic degradation of rhodamine B compared to that of P25 and ZnO. Moreover, the composite was investigated as a catalyst for the degradation of four dyes with different structures under UV conditions, exhibiting good degradation performance. Furthermore, the degradation efficiency did not change significantly after three cycles, indicating a certain degree of stability. In addition, the photocatalytic hydrogen production experiments showed that the nanocomposite Ag/ZnO had some ability to produce photocatalytic hydrogen.
机译：通过微波辅助水热合成制备一系列Ag / ZnO复合材料。它们的组成，结构和形态学的特征在于X射线衍射（XRD），UV可见漫射反射光谱（UV-VIS / DRS），X射线光电子谱（XPS），扫描电子显微镜（SEM），以及N-2吸附 - 解吸分析。结果表明，微波辅助合成方法没有显着改变复合材料的晶体结构。然而，通过复合材料的光吸收显然增强，其Brunauer-Emmett-Teller表面积值改变，并且观察到优异的表面形态。此外，通过微波辅助水热合成形成的Ag / ZnO复合材料表现出更规则的堆叠成堆叠成菊花状结构。在紫外，可见光，模拟阳光和微波辅助照射下，与P25和ZnO的光催化降解罗丹明B的光催化性能更好地表现出更好的光催化性质。此外，将复合材料作为催化剂进行催化剂，用于在紫外线条件下具有不同结构的四种染料，表现出良好的降解性能。此外，在三个周期后，降解效率不会显着变化，表明一定程度的稳定性。此外，光催化氢生产实验表明，纳米复合效应Ag / ZnO具有产生光催化氢的能力。

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  • 来源
    《RSC Advances》 |2018年第11期|共12页
  • 作者

    Xin Zichan; Li Li; Zhang Xiuli; Zhang Wenzhi;

  • 作者单位

    Qiqihar Univ Coll Mat Sci &

    Engn Qiqihar 161006 Peoples R China;

    Qiqihar Univ Coll Mat Sci &

    Engn Qiqihar 161006 Peoples R China;

    Qiqihar Univ Coll Chem &

    Chem Engn Qiqihar 161006 Peoples R China;

    Qiqihar Univ Coll Chem &

    Chem Engn Qiqihar 161006 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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