Paper Title
SERS activity of Ag nanoparticles@Ag nanoflower for Trace Level Detection of Organic Pollutant

Abstract
In this study, we report a facile fabrication process of silver nanoparticles@silver nanoflower (Ag NP@Ag NF) hybrid nanostructure for reliable surface-enhanced Raman scattering (SERS) substrate by a drop-casting technique for chemical sensing of rhodamine 6G (R6G). Herein, we demonstrate that the Ag NP@Ag NF nanostructure reveals better SERS activity than Ag NP and Ag NF. The incorporation of Ag NP on to Ag NF through the sonication process will produce numerous hot spots which enhanced the Raman signal with high analytical enhancement factor (AEF) of 3.39  109 and detect R6G down to 10-11 M with high reproducibility of 9.13% for ideal Raman peak at 1366 cm-1. The proposed simple method is rapid and cost-effective which offers high AEF, sensitivity, reproducibility and has great potential for the detection of organic molecules in a realistic environment. Keywords - Surface-enhanced Raman scattering, Ag nanoparticles, Ag nanoflower, rhodamine 6G.