Seed mediated synthesis of highly stable ctab capped triangular silver nanoplates for lspr sensing

Hegde, Hemanth and Chidangil, Santhosh and Sinha, Rajeev K (2019) Seed mediated synthesis of highly stable ctab capped triangular silver nanoplates for lspr sensing. Materials Research Express, 6 (10). pp. 1-9. ISSN 2053-1591

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Abstract

Triangular silver nanoplates synthesized using conventional method with trisodium citrate as capping agent shows degradation of its sharp edges over a period of time making them suitable for use only in a limited time-frame. In this work, we present a new approach to synthesize triangular nanoplates using seed mediated method and cetyltrimethylammonium bromide (CTAB) as a single capping agent in very low concentration of 0.4 mM. The seed nanoparticles as well as nanoplates synthesized in this work showed higher stability over an observation period of ten days. Also, the method allows the fine tuning of nanoplate size by tuning the seed volume in the synthesis process. The synthesized nanoplates were examined morphologically as well as through UV–vis spectroscopy utilizing lab-built setup. These nanoplates also show good bulk refractive index sensitivity of 167 nm/RIU for∼45 nm edge length triangular nanoplates.

Item Type: Article
Uncontrolled Keywords: Silver nanoplates; cethytrimethylammonium bromide (CTAB); localized surface plasmon resonance (LSPR); glucose sensing; seed mediated.
Subjects: Departments at MU > Atomic Molecular Physics
Depositing User: KMC Library
Date Deposited: 25 Sep 2019 10:16
Last Modified: 25 Sep 2019 10:16
URI: http://eprints.manipal.edu/id/eprint/154618

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