Seed mediated synthesis of highly stable CTAB capped triangular silver nanoplates for LSPR sensing

Research output: Contribution to journalArticle

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.

Original languageEnglish
Article number105075
JournalMaterials Research Express
Volume6
Issue number10
DOIs
Publication statusPublished - 30-08-2019

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Silver
Seed
Tuning
Ultraviolet spectroscopy
Refractive index
Nanoparticles
Degradation
cetrimonium

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Metals and Alloys

Cite this

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title = "Seed mediated synthesis of highly stable CTAB capped triangular silver nanoplates for LSPR sensing",
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.",
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Seed mediated synthesis of highly stable CTAB capped triangular silver nanoplates for LSPR sensing. / Hegde, Hemant; Santhosh, C.; Sinha, Rajeev K.

In: Materials Research Express, Vol. 6, No. 10, 105075, 30.08.2019.

Research output: Contribution to journalArticle

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AU - Sinha, Rajeev K.

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