A highly sensitive and stable SERS substrate using hybrid tungsten dioxide/carbon ultrathin nanowire beams

Compared to noble metals, semiconductor surface enhanced Raman spectrum (SERS) substrates are much cheaper, but their poor sensitivity and stability limits their applications. Here, we report a remarkable enhancement of Raman signals observed from hybrid WO 2 /C ultrathin nanowire beams. An outstand...

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Bibliographic Details
Published in:Journal of materials chemistry. C, Materials for optical and electronic devices Materials for optical and electronic devices, 2018, Vol.6 (13), p.3200-3205
Main Authors: He, Chenying, Bai, Hua, Yi, Wencai, Liu, Jingyao, Li, Xinshi, Li, Xia, Xi, Guangcheng
Format: Article
Language:English
Subjects:
Beams (radiation)
Charge transfer
Nanowires
Noble metals
Substrates
Tungsten
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Summary:Compared to noble metals, semiconductor surface enhanced Raman spectrum (SERS) substrates are much cheaper, but their poor sensitivity and stability limits their applications. Here, we report a remarkable enhancement of Raman signals observed from hybrid WO 2 /C ultrathin nanowire beams. An outstanding enhancement factor (EF) of 1.3 × 10 6 is achieved, and the lowest detection limit is up to 10 −8 M. More importantly, the new SERS active substrate shows ultrahigh chemical, thermal, and light stabilities. An electromagnetic enhancement model and an interfacial charge transfer model coexist in the new SERS substrate.
ISSN:2050-7526
2050-7534
DOI:10.1039/C8TC00573G