Issue 12, 2020

Synthesis of corrugated surface AgNWs and their applications in surface enhanced Raman spectroscopy

Abstract

Among metals, AgNWs are considered to be excellent materials for use in surface enhancement Raman spectroscopic (SERS) sensing due to their superior electrical properties, strong electromagnetic field generation and strong enhancement intensity. Herein, we used a simple conventional polyol method to synthesize AgNWs feasibly in 40 min under Ar inert atmosphere without using any inorganic salts; only high molecular weight PVP was used as a capping and growth controlling agent, while ethylene glycol was used as a solvent as well as a reducing agent and silver nitrate was used as a Ag source. The polyol-synthesized smooth surface AgNWs were then subjected to chemical etching using aqueous ammonia and 30% hydrogen peroxide as etchant materials, and corrugated surface AgNWs were successfully prepared. The as-synthesized corrugated surface AgNWs were used as surface enhancement materials to increase the intensity of Raman signals, and the surface enhancement properties of the corrugated surface AgNWs were studied using rhodamine 6G as a probe molecule via SERS sensing. The results showed that the AgNWs were successfully prepared in 40 min of reaction; also, corrugated surface AgNWs were prepared, and their corrugated surfaces resulted in high intensity SERS signals.

Graphical abstract: Synthesis of corrugated surface AgNWs and their applications in surface enhanced Raman spectroscopy

Article information

Article type
Paper
Submitted
25 Nov 2019
Accepted
18 Feb 2020
First published
04 Mar 2020

CrystEngComm, 2020,22, 2183-2196

Synthesis of corrugated surface AgNWs and their applications in surface enhanced Raman spectroscopy

S. Fahad, H. Yu, L. Wang, Y. Wang, T. Elshaarani, B. U. Amin, K. Naveed, R. U. Khan, S. Mehmood, F. Haq, Z. Ni and M. Usman, CrystEngComm, 2020, 22, 2183 DOI: 10.1039/C9CE01866B

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