One pot synthesis and characterization of alginate stabilized semiconductor nanoparticles

Parani Sundarrajan, Prabakaran Eswaran, Alexander Marimuthu, Lakshmi Baddireddi Subhadra, Pandian Kannaiyan

Research output: Contribution to journalArticlepeer-review

142 Citations (Scopus)

Abstract

Uniform and well dispersed metal sulfide semiconductor nanoparticles incorporated into matrices of alginate biopolymer are prepared by using a facile in situ method. The reaction was accomplished by impregnation of alginate with divalent metal ions followed by reaction with thioacetamide. XRD analysis showed that the nanoparticles incorporated in the polymer matrix were of cubic structure with the average particle diameter of 1.8 to 4.8 nm. Field emission scanning electron microscopy and high resolution transmission electron microscopy images indicated that the particles were well dispersed and distributed uniformly in the matrices of alginate polymer. FT-IR spectra confirmed the presence of alginate in the nanocomposite. The crystalline nature and thermal stability of the alginate polymer was found to be influenced by the nature of the divalent metal ions used for the synthesis. The proposed method is considered to be a simple and greener approach for large scale synthesis of uniform sized nanoparticles.

Original languageEnglish
Pages (from-to)3218-3224
Number of pages7
JournalBulletin of the Korean Chemical Society
Volume33
Issue number10
DOIs
Publication statusPublished - 20 Oct 2012
Externally publishedYes

Keywords

  • Alginate
  • Biopolymers
  • Ion exchange
  • Semiconductor nanoparticles

ASJC Scopus subject areas

  • General Chemistry

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