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Au-covered hollow urchin-like ZnO nanostructures for surface-enhanced Raman scattering sensing

Abstract : Au-covered hollow urchin-like ZnO nanostructures were prepared with controlled size by combining nanosphere lithography (NSL), atomic layer deposition (ALD), electrodeposition, and electron beam (e-beam) evaporation. The optimal Au film thickness for sensing applications was determined by measuring the surface-enhanced Raman scattering (SERS) intensities of the substrates. Furthermore, the sensing performances of these hybrid nanostructures have been investigated by using chemical and biological molecules: thiophenol and adenine, respectively. Limits of detection (LOD) of 10 À8 M and 10 À6 M were found for the detection of thiophenol and adenine, respectively. Additionally, the excellent uniformity and batch-to-batch reproducibility of the substrates make them excellent candidates for reliable SERS sensing and biosensing.
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Submitted on : Wednesday, November 18, 2020 - 11:34:39 AM
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Octavio Graniel, Igor Iatsunskyi, Emerson Coy, Christophe Humbert, Grégory Barbillon, et al.. Au-covered hollow urchin-like ZnO nanostructures for surface-enhanced Raman scattering sensing. Journal of Materials Chemistry C, Royal Society of Chemistry, 2019, 7 (47), pp.15066-15073. ⟨10.1039/C9TC05929F⟩. ⟨hal-02537077⟩



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