Trace level determination of Hg 2+ ions in environmental samples with a mercaptotriazole-functionalized TiO 2 nanostructure-based fluorescent probe

K. B. Akshaya, G. Reenamole, Kezia Sasitharan, T. P. Vinod, Anitha Varghese, Louis George

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

A highly selective and sensitive fluorescent probe for the determination of Hg 2+ ions is reported using substituted mercaptotriazole functionalized TiO 2 nanoparticles (MMT@TiO 2 ). The functionalized TiO 2 nanoparticles were characterized by UV-vis spectrophotometric, spectrofluorometric, FT-IR, FT-Raman, XPS, TEM, SEM, EDAX and P-XRD analyses. The interaction of Hg 2+ ions with functionalized MMT@TiO 2 induced aggregation of nanoparticles causing chelation enhanced fluorescence. The limit of detection and limit of quantitation for the determination of Hg 2+ ions were found to be 2.18 × 10 -10 M and 6.61 × 10 -10 M, respectively. The method developed was successfully applied for the determination of Hg 2+ ions in environmental samples.

Original languageEnglish
Pages (from-to)537-547
Number of pages11
JournalAnalytical Methods
Volume11
Issue number4
DOIs
StatePublished - 28 Jan 2019
Externally publishedYes

ASJC Scopus subject areas

  • Analytical Chemistry
  • General Chemical Engineering
  • General Engineering

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