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Title: Microwave-assisted synthesis of sensitive silver substrate for surface-enhanced Raman scattering spectroscopy

Abstract

A sensitive silver substrate for surface-enhanced Raman scattering (SERS) spectroscopy is synthesized under multimode microwave irradiation. The microwave-assisted synthesis of the SERS-active substrate was carried out in a modified domestic microwave oven of 2450 MHz, and the reductive reaction was conducted in a polypropylene container under microwave irradiation with a power of 100 W for 5 min. Formaldehyde was employed as both the reductant and microwave absorber in the reductive process. The effects of different heating methods (microwave dielectric and conventional) on the properties of the SERS-active substrates were investigated. Samples obtained with 5 min of microwave irradiation at a power of 100 W have more well-defined edges, corners, and sharper surface features, while the samples synthesized with 1 h of conventional heating at 40 deg. C consist primarily of spheroidal nanoparticles. The SERS peak intensity of the {approx}1593 cm{sup -1} band of 4-mercaptobenzoic acid adsorbed on silver nanoparticles synthesized with 5 min of microwave irradiation at a power of 100 W is about 30 times greater than when it is adsorbed on samples synthesized with 1 h of conventional heating at 40 deg. C. The results of quantum chemical calculations are in good agreement with our experimental data. Thismore » method is expected to be utilized for the synthesis of other metal nanostructural materials.« less

Authors:
; ; ; ; ;  [1];  [2]
  1. College of Chemistry, Liaoning University, Shenyang 110036 (China)
  2. Beijing National Laboratory for Condensed Matter Physics and Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China)
Publication Date:
OSTI Identifier:
21254771
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Chemical Physics; Journal Volume: 129; Journal Issue: 13; Other Information: DOI: 10.1063/1.2987705; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; FORMALDEHYDE; GHZ RANGE 01-100; HEATING; IRRADIATION; MICROWAVE OVENS; MICROWAVE RADIATION; NANOSTRUCTURES; PARTICLES; POLYPROPYLENE; RAMAN EFFECT; SILVER; SPECTROSCOPY; SUBSTRATES; SURFACES; SYNTHESIS

Citation Formats

Xia Lixin, Wang Haibo, Wang Jian, Gong Ke, Jia Yi, Zhang Huili, and Sun Mengtao. Microwave-assisted synthesis of sensitive silver substrate for surface-enhanced Raman scattering spectroscopy. United States: N. p., 2008. Web. doi:10.1063/1.2987705.
Xia Lixin, Wang Haibo, Wang Jian, Gong Ke, Jia Yi, Zhang Huili, & Sun Mengtao. Microwave-assisted synthesis of sensitive silver substrate for surface-enhanced Raman scattering spectroscopy. United States. doi:10.1063/1.2987705.
Xia Lixin, Wang Haibo, Wang Jian, Gong Ke, Jia Yi, Zhang Huili, and Sun Mengtao. Tue . "Microwave-assisted synthesis of sensitive silver substrate for surface-enhanced Raman scattering spectroscopy". United States. doi:10.1063/1.2987705.
@article{osti_21254771,
title = {Microwave-assisted synthesis of sensitive silver substrate for surface-enhanced Raman scattering spectroscopy},
author = {Xia Lixin and Wang Haibo and Wang Jian and Gong Ke and Jia Yi and Zhang Huili and Sun Mengtao},
abstractNote = {A sensitive silver substrate for surface-enhanced Raman scattering (SERS) spectroscopy is synthesized under multimode microwave irradiation. The microwave-assisted synthesis of the SERS-active substrate was carried out in a modified domestic microwave oven of 2450 MHz, and the reductive reaction was conducted in a polypropylene container under microwave irradiation with a power of 100 W for 5 min. Formaldehyde was employed as both the reductant and microwave absorber in the reductive process. The effects of different heating methods (microwave dielectric and conventional) on the properties of the SERS-active substrates were investigated. Samples obtained with 5 min of microwave irradiation at a power of 100 W have more well-defined edges, corners, and sharper surface features, while the samples synthesized with 1 h of conventional heating at 40 deg. C consist primarily of spheroidal nanoparticles. The SERS peak intensity of the {approx}1593 cm{sup -1} band of 4-mercaptobenzoic acid adsorbed on silver nanoparticles synthesized with 5 min of microwave irradiation at a power of 100 W is about 30 times greater than when it is adsorbed on samples synthesized with 1 h of conventional heating at 40 deg. C. The results of quantum chemical calculations are in good agreement with our experimental data. This method is expected to be utilized for the synthesis of other metal nanostructural materials.},
doi = {10.1063/1.2987705},
journal = {Journal of Chemical Physics},
number = 13,
volume = 129,
place = {United States},
year = {Tue Oct 07 00:00:00 EDT 2008},
month = {Tue Oct 07 00:00:00 EDT 2008}
}