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Silver nanoparticle aggregate formation by a photochemical method and its application to SERS analysis †
Author(s) -
Pal Anjali,
Pal Tarasankar
Publication year - 1999
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/(sici)1097-4555(199903)30:3<199::aid-jrs359>3.0.co;2-b
Subject(s) - silver nanoparticle , ascorbic acid , plasmon , raman spectroscopy , nanoparticle , aqueous solution , absorption (acoustics) , absorption band , transmission electron microscopy , photochemistry , chemistry , absorption spectroscopy , materials science , nanotechnology , optoelectronics , optics , physics , food science , composite material
Photochemical reduction of silver(I) to silvernanoparticles was achieved, for the first time, in aqueous TritonX‐100 medium using ascorbic acid. The particles show the usualplasmon absorption band of silver at 410 nm and a new band at 650 nm.Transmission electron microscope studies show that the size of theindividual particles varies from 15 to 60 nm and the particles are ina string‐like assembly. The particles are extremely stable andSERS active. Copyright © 1999 John Wiley & Sons, Ltd.