Surface enhanced Raman spectral studies of 2-bromo-1,4-naphthoquinone

[Display omitted] •Silver nanoparticles were synthesized by solution combustion method using urea as fuel.•Prepared silver nanoparticles are rod in shape.•nRs and SERS studies were performed for 2BrNQ molecule.•Higher enhancement observed for CO, CBr stretching, in-plane and out-of-plane bending CH...

Full description

Saved in:
Bibliographic Details
Published in:Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy Molecular and biomolecular spectroscopy, 2015-03, Vol.138, p.113-119
Main Authors: Geetha, K., Umadevi, M., Sathe, G.V., Vanelle, P., Terme, T., Khoumeri, O.
Format: Article
Language:English
Subjects:
2-Bromo-1,4-naphthoquinone (2-BrNQ)
Chemical Sciences
SEM
Silver nanoparticles
Solution combustion method
Surface Enhanced Raman Scattering
XRD
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:[Display omitted] •Silver nanoparticles were synthesized by solution combustion method using urea as fuel.•Prepared silver nanoparticles are rod in shape.•nRs and SERS studies were performed for 2BrNQ molecule.•Higher enhancement observed for CO, CBr stretching, in-plane and out-of-plane bending CH modes.•Orientation of 2BrNQ molecule on silver nanoparticles is ‘stand-on’. Silver nanoparticles have been synthesized by a simple and inexpensive solution combustion method with urea as fuel. The structural and morphology of the silver nanoparticles were investigated through X-ray powder diffraction (XRD), Field Emission Scanning Electron Microscopy (FESEM) and Energy Dispersion Spectra (EDS) techniques. Structural and morphological results confirmed the nanocrystalline nature of the silver nanoparticles. Density Functional Theory (DFT) calculations were also performed to study the ground and excited state behavior of 2-bromo-1,4-naphthoquinone (2-BrNQ) and 2-BrNQ on silver nanoparticles. Surface-Enhanced Raman Scattering (SERS) spectra of 2-BrNQ adsorbed on silver nanoparticles were investigated. The CO, CH in-plane bending and CBr stretching modes were enhanced in SERS spectrum with respect to normal Raman spectrum. The spectral analysis reveals that the 2-BrNQ adsorbed ‘stand-on’ orientation on the silver surface. Density Functional Theory (DFT) calculations are also performed to study the vibrational features of 2-BrNQ molecule and 2-BrNQ molecule on silver surface.
ISSN:1386-1425
1873-3557
DOI:10.1016/j.saa.2014.11.009