• Fulltext

       

        Click here to view fulltext PDF


      Permanent link:
      https://www.ias.ac.in/article/fulltext/jcsc/134/0005

    • Keywords

       

      Fluoride ions; PEG-400; Silver nanoparticles; Sensing; Colorimetric sensing; UV–Visible spectra.

    • Abstract

       

      Development of rapid and effective analytical sensing strategy for fluoride ion in aqueousmedium is an utmost need in view of naturally widely spread fluoride contaminated groundwater or drinkingwater which causes numerous adverse effects on human health. In prospect of the need, we have developed asimple synthetic route for poly(ethylene glycol)-400 crowned silver nanoparticles for sensitive sensing offluoride ions in aqueous medium. The silver nanoparticles embedded with polyethylene glycol-400 (PEG-400) were synthesized as colloids by heating an aqueous solution of silver nitrate and PEG-400 with trisodiumcitrate. The effects of temperature, the concentration of silver nitrate and trisodium citrate werethoroughly investigated and optimized. The structure and morphology of prepared poly(ethylene glycol)-400crowned silver nanoparticles as colloids was thoroughly examined by UV–visible spectroscopy, Fouriertransform infrared (FTIR) and field emission scanning electron microscopy (FESEM). The prepared poly(-ethylene glycol)-400 crowned Ag Nps selectively detects fluoride ion in an aqueous medium at low concentration(0.098 mg/L) via the change in optical properties. The change in optical properties of Ag Nps wasinvestigated with UV-visible and morphological changes were examined with field emission scanningelectron microscope. The FESEM and UV-Visible analysis demonstrate that synthesized Ag nanoparticles areagglomerates with fluoride ions with immediate visual color change from yellow to colorless.

    • Graphical Abstract

       

      * Polyethylene glycol crowned silver nanoparticles have designed and synthesized for selective fluoride sensing in aqueous medium. * Sensing occurrences explained with FSEM and UV-Visible spectroscopic techniques *NPs exhibits good limit of detection 0.0016 mg/L that is less than desirable limit 0.05 mg/L

    • Author Affiliations

       

      SUMAN SWAMI1 ARUNAVA AGARWALA2 VIBHA SHRIVASTAVA3 RAHUL SHRIVASTAVA1

      1. Department of Chemistry, Manipal University Jaipur, Jaipur (Rajasthan), VPO-Dehmi-Kalan, Off Jaipur- Ajmer Express Way, Jaipur, Rajasthan 303007, India
      2. Department of Chemistry, Malda College, Malda, West Bengal 732101, India
      3. Department of Chemistry, Shri Kalyan Government Girls College, Sikar, Rajasthan 332001, India
    • Dates

       
  • Journal of Chemical Sciences | News

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2021-2022 Indian Academy of Sciences, Bengaluru.