In Situ Growth of Low-Dimensional Silver Nanoclusters with Their Tunable
Plasmonic and Thermodynamic Behavior
Gajendra
Kumar Inwati
Yashvant Rao
Man Singh
10.1021/acsomega.7b00672.s001
https://acs.figshare.com/articles/journal_contribution/In_Situ_Growth_of_Low-Dimensional_Silver_Nanoclusters_with_Their_Tunable_Plasmonic_and_Thermodynamic_Behavior/5406163
Optical
properties of noble metal nanostructures associated with
localized surface plasmon resonance (SPR) are technically important
for optical switches and plasmonic devices. In this work, silver nanoclusters
are embedded inside the soda-lime glass matrix, followed by a thermal
annealing process in an open air atmosphere for 1 h. The effects of
thermal annealing on the plasmonic behavior of Ag nanoclusters embedded
in the glass matrix are studied with UV–vis spectroscopy and
photoluminescence. In the SPR spectra, a 14 nm blue shift is observed
in the visible range under the influence of thermal annealing at a
higher temperature. The thermal effects on Ag particle size and SPR
have been illustrated for plasmonic properties. The structural and
elemental investigation of as-grown Ag nanoclusters is confirmed by
X-ray diffraction, high-resolution transmission electron microscope,
and X-ray photoelectron spectroscopy. The structural, plasmonic, and
thermodynamic properties associated with the growth mechanism of Ag
nanoclusters have been explained under the thermal process. Enthalpy
(Δ<i>H</i>), entropy (Δ<i>S</i>),
and Gibbs energy (Δ<i>G</i>) for Ag nanoclusters growth
and nucleation are significantly calculated and interpreted at different
temperatures. An empirical relation among the Δ<i>H</i>, Δ<i>S</i>, and Δ<i>G</i> is developed
vis-a-vis activation energy (97.70 J/mol), which is calculated by
the Arrhenius linear equation.
2017-09-14 08:15:41
Ag nanoclusters growth
plasmonic
as-grown Ag nanoclusters
SPR
Low-Dimensional Silver Nanoclusters
Ag nanoclusters
Thermodynamic Behavior Optical properties
soda-lime glass matrix
X-ray photoelectron spectroscopy
UV
transmission electron microscope
surface plasmon resonance
annealing
Ag particle size