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Enhanced optical properties of ZnO nanorods decorated with gold nanoparticles for self cleaning surface enhanced Raman applications

机译：纳米金修饰的ZnO纳米棒的光学性能增强，可用于自清洁表面，增强了拉曼应用

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摘要

Raman is a very useful tool to identify chemical substances. However, Raman signal is normally not very strong and hence it is important to fabricate surface enhance Raman scattering (SERS) substrates of good repeatability and high enhancement factor. In this study, ZnO nanorods were prepared by a facile hydrothermal process assisted with galvanic effect. Gold nanoparticles were decorated on the as-prepared nanorods by sputtering method. The results showed that the Au nanoparticles enhance photoluminescence, Raman scattering and photocatalyst properties of ZnO nanorods. The ZnO@Au based SERS substrate showed high enhancement factor and can detect methylene blue at low concentration of 10(-9) M. In combination with self cleaning under UV irradiation, the ZnO@Au SERS substrates can be reusable and hence it is promising for quantitative analyzing based on Raman scattering.
机译：拉曼是​​识别化学物质的非常有用的工具。然而，拉曼信号通常不是很强，因此重要的是制造具有良好可重复性和高增强因子的表面增强拉曼散射（SERS）衬底。在这项研究中，ZnO纳米棒是通过方便的水热过程在电流作用的辅助下制备的。通过溅射法将金纳米颗粒装饰在所制备的纳米棒上。结果表明，金纳米颗粒增强了ZnO纳米棒的光致发光，拉曼散射和光催化性能。基于ZnO @ Au的SERS衬底显示出较高的增强因子，并且可以在10（-9）M的低浓度下检测到亚甲基蓝。与紫外线照射下的自清洁相结合，ZnO @ Au的SERS衬底可以重复使用，因此很有希望用于基于拉曼散射的定量分析。

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  • 来源
    《Applied Surface Science》 |2020年第1期|144593.1-144593.7|共7页
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  • 作者单位

    Ton Duc Thang Univ Inst Computat Sci Div Computat Phys Ho Chi Minh City Vietnam|Ton Duc Thang Univ Fac Elect & Elect Engn Ho Chi Minh City Vietnam;

    Vietnam Natl Univ Fac Phys VNU Univ Sci 334 Nguyen Trai Hanoi Vietnam;

    Vietnam Maritime Univ Dept Phys Fac Basic Fundamental Sci 484 Lach Tray Le Chan Hai Phong Vietnam;

    Duy Tan Univ Inst Res & Dev 03 Quang Trung Danang Vietnam;

    Vietnam Natl Univ Fac Phys VNU Univ Sci 334 Nguyen Trai Hanoi Vietnam|Univ Min & Geol Fac Basic Sci Dept Phys Hanoi Vietnam;

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  • 正文语种 eng
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  • 关键词

    ZnO nanorods; Hydrothermal; Galvanic effect; Surface enhanced Raman scattering; Gold nanoparticles;

    机译：ZnO纳米棒;水热电流效应表面增强拉曼散射;金纳米颗粒;

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