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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Growth and photocatalytic activity of ZnO nanosheets stabilized by Ag nanoparticles
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Growth and photocatalytic activity of ZnO nanosheets stabilized by Ag nanoparticles

机译：Ag纳米颗粒稳定的ZnO纳米片的生长及其光催化活性

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摘要

The Ag nanoparticles-stabilized ZnO nanosheets were prepared using a liquid-liquid two-phase method with (n-Dodecyl)trimethylammonium bromide (DTAB) as a phase transfer agent at the room temperature. The silver nanoparticles which are conductors with the character of attracting energy can make the ZnO sheets stabilize under the higher energy electrons. The samples are characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV-vis spectroscopy and fluorescence. The results demonstrate that the silver nanoparticles load on the surface of ZnO sheets and make the ZnO sheets stabilize. Furthermore, the formation mechanism of ZnO sheets stabilized by silver nanoparticles was also proposed and discussed in detail. Moreover, the photocatalysis test shows that the ZnO sheets stabilized by silver nanoparticles exhibit a higher photocatalytic activity than the pure ZnO nanosheets, thereby implying that the Ag/ZnO interfaces promote the separation of photogenerated electron-hole pairs and enhance the photocatalytic activity.
机译：在室温下，使用液-液两相法以（正十二烷基）三甲基溴化铵（DTAB）作为相转移剂制备了稳定的Ag纳米颗粒的ZnO纳米片。作为具有吸引能量特性的导体的银纳米颗粒可以使ZnO片在较高能量的电子下稳定。样品通过X射线衍射（XRD），扫描电子显微镜（SEM），透射电子显微镜（TEM），紫外可见光谱和荧光进行表征。结果表明，银纳米颗粒负载在ZnO片的表面上并使ZnO片稳定。此外，还提出并详细讨论了由银纳米颗粒稳定的ZnO片的形成机理。此外，光催化测试表明，由银纳米颗粒稳定的ZnO片材比纯ZnO纳米片材具有更高的光催化活性，从而暗示Ag / ZnO界面促进了光生电子-空穴对的分离并增强了光催化活性。

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