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Silver nanoparticle aggregate formation by a photochemical method and its application to SERS analysis

✍ Scribed by Anjali Pal; Tarasankar Pal

Publisher: John Wiley and Sons
Year: 1999
Tongue: English
Weight: 181 KB
Volume: 30
Category: Article
ISSN: 0377-0486
DOI: 10.1002/(sici)1097-4555(199903)30:3<199::aid-jrs359>3.0.co;2-b

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✦ Synopsis

Photochemical reduction of silver(I) to silver nanoparticles was achieved, for the Ðrst time, in aqueous Triton X-100 medium using ascorbic acid. The particles show the usual plasmon absorption band of silver at 410 nm and a new band at 650 nm. Transmission electron microscope studies show that the size of the individual particles varies from 15 to 60 nm and the particles are in a string-like assembly. The particles are extremely stable and SERS active.

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