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首页> 外文期刊>IEEE sensors journal >Fabrication of Au-Decorated 3D ZnO Nanostructures as Recyclable SERS Substrates
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Fabrication of Au-Decorated 3D ZnO Nanostructures as Recyclable SERS Substrates

机译：作为可回收SERS基底的Au装饰3D ZnO纳米结构的制备

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Highly roughened Au-decorated 3D ZnO nano-structures were prepared using a combination of prism holographic lithography and atomic layer deposition techniques. Prism holographic lithography is a simple and rapid method for fabricating ordered 3D nanostructures using the optical interference effects of multiple beams derived from a specially designed prism. Highly ordered reproducible surface-enhanced Raman scattering (SERS) substrates are needed for the reliable calibration of target analyte concentrations. A high density of Au nanoparticles separated by nanoscale gaps was generated on the Au-coated ZnO inverse structures. The nanogaps may function as strong hot spots for highly sensitive SERS-based chemical/biological sensors. The optimized SERS intensity from the prepared Au-coated 3D ZnO inverse structures was 20 times the intensity obtained from an Au-coated flat glass control substrate. The surfaces could be reused after the photocatalytic degradation and removal of adsorbates in the presence of ZnO. The Au-coated 3D ZnO structures described here offer an alternative to traditional single-use SERS substrates.
机译：使用棱镜全息光刻和原子层沉积技术的组合，制备了高度粗糙的Au装饰3D ZnO纳米结构。棱镜全息光刻技术是一种简单而快速的方法，可利用源自特殊设计棱镜的多束光的干涉效应来制造有序3D纳米结构。为了可靠地标定目标分析物浓度，需要高度有序的可再现表面增强拉曼散射（SERS）底物。在金包被的ZnO反向结构上产生了被纳米级间隙分隔的高密度金纳米颗粒。纳米间隙可作为高度敏感的基于SERS的化学/生物传感器的热点。从制备的金涂层的3D ZnO逆结构获得的最佳SERS强度是从金涂层的平板玻璃控制基板获得的强度的20倍。在ZnO存在下，光催化降解并去除吸附物后，表面可以重新使用。本文所述的镀金3D ZnO结构为传统的一次性SERS基底提供了替代方案。

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