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Au nanoparticle-modified WO3 nanoflowers/TiO2 nanotubes for SERS detection of dyes

Abstract

A metal-semiconductor heterojunction material was synthesized by electrodepositing Au nanoparticles onto the surface of WO3 nanoflowers that was grown on TiO2 nanotubes, and applied, for the first time, to the surface-enhanced Raman scattering detection of dyes. Owing to the nanoflower structure, a localized surface plasmon resonance is generated on the surface of Au/WO3/TiO2 nanosheets, which brings about multiple enhanced three-dimensional electromagnetic fields. An enhanced factor of 3.6 × 106 is achieved. The spot-to-spot change in SERS intensity is less than 15%, and the SERS substrate can be preserved for at least 50 days. The analysis of dyes in real samples gives a recovery rate of 94.33-115.6%, indicating the potential applications in environmental analysis.

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Publication details

The article was received on 15 Aug 2017, accepted on 12 Oct 2017 and first published on 12 Oct 2017


Article type: Paper
DOI: 10.1039/C7NJ02998E
Citation: New J. Chem., 2017, Accepted Manuscript
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    Au nanoparticle-modified WO3 nanoflowers/TiO2 nanotubes for SERS detection of dyes

    B. Zhang, X. Yin, D. Zhen, W. Gu, Y. Liu and Q. Cai, New J. Chem., 2017, Accepted Manuscript , DOI: 10.1039/C7NJ02998E

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