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Facile Synthesis of Size-Tunable Silver Nanoparticles by Heteroepitaxial Growth Method for Efficient NIR SERS

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Title Facile Synthesis of Size-Tunable Silver Nanoparticles by Heteroepitaxial Growth Method for Efficient NIR SERS
 
Creator THARION, J
SATIJA, J
MUKHERJI, S
 
Subject ENHANCED-RAMAN-SCATTERING
SEED-MEDIATED GROWTH
OPTICAL-PROPERTIES
GOLD NANOPARTICLES
GREEN SYNTHESIS
POLYOL PROCESS
REDUCTION
NANOWIRES
FILM
NM
Silver nanoparticles
Localized surface plasmon resonance
Surface-enhanced Raman scattering
Heteroepitaxial growth
Sensor
 
Description We report a rapid and facile method to synthesize highly monodispersed silver nanoparticles (AgNP) by heteroepitaxial growth method using gold seed particles (size similar to 2 nm). Silver was deposited on gold seed particles by Tollen's reaction. The presence of seed particles provided good control on the morphology and size distribution of AgNP, achieving the standard deviation in size a parts per thousand currency sign11 %. The real-time kinetics of AgNP formation revealed that the presence of gold seed particles increased the reaction rate by 7-fold compared to seedless approach. The size and extinction maxima of AgNP were tunable by varying the gold seed particles to silver molar ratio. This new heteroepitaxial growth method of AgNP synthesis is simple, fast (completing the reaction within 3 min), and eco-friendly to yield monodispersed nanoparticles. Further, these AgNP were used to develop efficient surface-enhanced Raman scattering (SERS) substrates for sensing applications which showed good repeatability and significantly improved enhancement factors in the near-infrared (NIR) region.
 
Publisher SPRINGER
 
Date 2016-01-14T12:18:31Z
2016-01-14T12:18:31Z
2015
 
Type Article
 
Identifier PLASMONICS, 10(4)753-763
1557-1955
1557-1963
http://dx.doi.org/10.1007/s11468-014-9862-5
http://dspace.library.iitb.ac.in/jspui/handle/100/17478
 
Language en