Localized surface plasmon behavior of Ag-Cu alloy nanoparticles stabilized by rice-starch and gelatin
- DefenceMetallurgical Research Laboratory, KanchanBagh, Hyderabad-500058 (India)
The purpose of this communication was to understand localized surface plasmon behavior of a series of Ag-Cu alloy nanoparticles capped by rice-starch and gelatin. The structures of dried powders were investigated with the help of X-ray diffraction. The analysis revealed Ag-rich and Cu-rich phases with maximum solid solubility of Cu ∼9 atom per cent; 8 atom per cent and Ag ∼ 16 atom per cent; 14 atom per cent in rice-starch and gelatin capped samples respectively. Transmission electron microscope was used for knowing the particle size as well as to supplement FCC phase formations of Ag-rich and Cu-rich solid phases arrived at based on X-ray diffraction studies. The UV-Vis spectra of sols were examined for the formation and stability of alloy nanoparticles. The temporal evolution of LSPR curves gave us to assert that the sol is stable for more than two months. Small angle X-ray scattering in the sol state was extensively utilized to understand nature of suspensions in terms of fractals. Such a study is important for having a correlation between LSPR behaviors with those of nanoparticle dispersion in aqueous media. It is believed that this work will be a contribution to the emerging field of plasmonics that include applications in the area of photophysical processes and photochemical reactions.
- OSTI ID:
- 22492122
- Journal Information:
- AIP Advances, Vol. 5, Issue 10; Other Information: (c) 2015 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 2158-3226
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
COPPER ALLOYS
CORRELATIONS
FCC LATTICES
FRACTALS
GELATIN
NANOPARTICLES
PARTICLE SIZE
PHOTOCHEMICAL REACTIONS
POWDERS
SILVER ALLOYS
SMALL ANGLE SCATTERING
SOLIDS
SOLS
STARCH
SURFACES
SUSPENSIONS
TRANSMISSION ELECTRON MICROSCOPY
ULTRAVIOLET SPECTRA
VISIBLE SPECTRA
X-RAY DIFFRACTION