Single gold-nanoparticles-decorated silver/carbon nanowires as substrates for surface-enhanced Raman scattering detection

Limiao Chen; Johnny Muya Chabu; Rongli Jin; Jiannan Xiao

doi:10.1039/C3RA45397A

Single gold-nanoparticles-decorated silver/carbon nanowires as substrates for surface-enhanced Raman scattering detection†

Limiao Chen,*^a Johnny Muya Chabu,^ab Rongli Jin^a and Jiannan Xiao^a

* Corresponding authors

^a College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, PR China
E-mail: chenlimiao@csu.edu.cn
Fax: +86 73188879616
Tel: +86 73188879616

^b University of Lubumbashi, Faculty of Science, Department of Chemistry, BP 1825, Congo D. R.

Abstract

Silver/carbon (Ag/C) core–shell nanowires with different thickness of shell were synthesized by a hydrothermal method and used as templates for fabricating gold nanoparticle-decorated Ag/C (Ag/C/AuNPs) nanowires. The Ag/C/AuNPs nanowires were characterized by transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), scanning electron microscopy (SEM), and energy-dispersive X-ray (EDX). It was found that the number density and particle size of Au nanoparticles can be tuned by varying the concentration of Au precursor. Surface-enhanced Raman scattering (SERS) measurements showed that single Ag/C/AuNPs nanowire exhibited strong SERS effect. Rhodamine 6G (R6G) molecules, with an extremely low concentration (1.0 × 10⁻¹¹ M), were readily detected using single Ag/C/AuNPs nanowires. Detection of melamine molecules at concentrations as low as 1.0 × 10⁻⁷ M was used as an example to show the possible application of such Ag/C/AuNPs nanowires. In addition, the effect of benzoic acid on the detection of melamine was also investigated. It was found that the SERS spectrum profile and intensity of melamine is very sensitive to the presence of benzoic acid.

Supplementary files

Article information

DOI: https://doi.org/10.1039/C3RA45397A
Article type: Paper
Submitted: 26 Sep 2013
Accepted: 23 Oct 2013
First published: 24 Oct 2013

Download Citation

RSC Adv., 2013,3, 26102-26109

Permissions

Request permissions

Single gold-nanoparticles-decorated silver/carbon nanowires as substrates for surface-enhanced Raman scattering detection

L. Chen, J. M. Chabu, R. Jin and J. Xiao, RSC Adv., 2013, 3, 26102 DOI: 10.1039/C3RA45397A

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.

RSC Advances

Single gold-nanoparticles-decorated silver/carbon nanowires as substrates for surface-enhanced Raman scattering detection†

Abstract

Supplementary files

Article information

Download Citation

Permissions

Single gold-nanoparticles-decorated silver/carbon nanowires as substrates for surface-enhanced Raman scattering detection

Social activity

Search articles by author

Spotlight

Advertisements