Issue 8, 2015

Ni/Au hybrid nanoparticle arrays as a highly efficient, cost-effective and stable SERS substrate

Abstract

A large-area cost-effective Ni/Au hybrid nanoparticle array is synthesized with a proposed versatile and simple process by depositing Au on the pre-prepared arrays of Ni particles with ultra-thin alumina membranes as shadow mask during the deposition. A highly efficient and stable surface enhancement Raman scattering (SERS) substrate could be obtained from utilizing the resulting regular pattern of Ni/Au NP arrays. As compared with the single Au NP arrays, a largely decreased Au evaporation thickness and much lesser Au is needed for achieving the same Raman enhancement factor for the Ni/Au NP arrays. Subsequent SERS spectra measurement of the crystal violet (CV) molecule detection indicate a good SERS-active sensitivity with a detection limit of 10−10 M concentration, a large Raman enhancement factor at 108 was obtained, excellent SERS signal reproducibility with a relative standard deviation (RSD) as low as 6–7% as well as a great long term stability at 10 months.

Graphical abstract: Ni/Au hybrid nanoparticle arrays as a highly efficient, cost-effective and stable SERS substrate

Supplementary files

Article information

Article type
Paper
Submitted
26 aug 2014
Accepted
15 dec 2014
First published
15 dec 2014

RSC Adv., 2015,5, 6172-6180

Ni/Au hybrid nanoparticle arrays as a highly efficient, cost-effective and stable SERS substrate

Q. Fu, K. M. Wong, Y. Zhou, M. Wu and Y. Lei, RSC Adv., 2015, 5, 6172 DOI: 10.1039/C4RA09312G

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements