TY - JOUR
T1 - Sonochemically synthesized Ag nanoparticles as a SERS active substrate and effect of surfactant
AU - Dar, Nitzan
AU - Chen, Kuang Yu
AU - Nien, Yung Tang
AU - Perkas, Nina
AU - Gedanken, Aharon
AU - Chen, In Gann
N1 - Publisher Copyright:
© 2015 Elsevier B.V. All rights reserved.
Copyright:
Copyright 2019 Elsevier B.V., All rights reserved.
PY - 2015/3/15
Y1 - 2015/3/15
N2 - Abstract Surface enhanced Raman scattering (SERS) enables the detection of substances at low concentrations using silver or gold nanostructure. The SERS technique has many applications, such as environmental detection and biosensing. Sonochemistry is an excellent and cheap deposition technique for coating substrates in a form of nanostructure at ambient temperature. It can also be utilized to prepare large SERS substrates. Here, we used the advantages of sonochemistry to deposit solid SERS substrates immobilized on GaN nanostructure. Morphology was studied by scanning electron microscopy. The elemental composition and the spatial distribution were examined by energy dispersive X-ray spectroscopy. The crystal structure and atomic presence was confirmed by X-ray diffraction. SERS substrates were examined with the analytes crystal violet (10 -5 M) and rhodamine 6G (10 -6 M), they showed prominent characteristic peaks. We discovered that the SERS intensity of poly-vinyl-pyrrolidinone aided sonochemical deposition of Ag nanoparticles was increased. The reason for the effect is morphological changes of the Ag nanoparticles. Smaller nanoparticles were fabricated, which increase their SERS intensity.
AB - Abstract Surface enhanced Raman scattering (SERS) enables the detection of substances at low concentrations using silver or gold nanostructure. The SERS technique has many applications, such as environmental detection and biosensing. Sonochemistry is an excellent and cheap deposition technique for coating substrates in a form of nanostructure at ambient temperature. It can also be utilized to prepare large SERS substrates. Here, we used the advantages of sonochemistry to deposit solid SERS substrates immobilized on GaN nanostructure. Morphology was studied by scanning electron microscopy. The elemental composition and the spatial distribution were examined by energy dispersive X-ray spectroscopy. The crystal structure and atomic presence was confirmed by X-ray diffraction. SERS substrates were examined with the analytes crystal violet (10 -5 M) and rhodamine 6G (10 -6 M), they showed prominent characteristic peaks. We discovered that the SERS intensity of poly-vinyl-pyrrolidinone aided sonochemical deposition of Ag nanoparticles was increased. The reason for the effect is morphological changes of the Ag nanoparticles. Smaller nanoparticles were fabricated, which increase their SERS intensity.
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U2 - 10.1016/j.apsusc.2015.01.045
DO - 10.1016/j.apsusc.2015.01.045
M3 - Article
AN - SCOPUS:84924710546
VL - 331
SP - 219
EP - 224
JO - Applied Surface Science
JF - Applied Surface Science
SN - 0169-4332
M1 - 29481
ER -