Gallic acid-functionalized silver nanoparticles as colorimetric and spectrophotometric probe for detection of Al3+ in aqueous medium

Gajanan Ghodake, Surendra Shinde, Avinash Kadam, Rijuta Ganesh Saratale, Ganesh Dattatraya Saratale, Asad Syed, Omar Shair, Marzouq Alsaedi, Dae Young Kim

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

Metal chelation-enhanced changes in surface plasmon resonance (SPR) band of gallic acid-functionalized AgNP solution to monitor aluminum ions (Al3+) is reported herein. In aqueous solution, Al3+ selectively induced a strong absorbance with large shifts up to ∼125 nm from the SPR band with color changing from orange to red. This study illustrates that hydroxyl groups of phenol affect the response of a probe that tunes the absorbance maxima to a longer wavelength at 525 nm. Moreover, the rapid formation of a AgNP-Al3+ coordination complex was demonstrated by real-time monitoring, adsorptive removal, and energy dispersive spectroscopy mapping.

Original languageEnglish
Pages (from-to)243-253
Number of pages11
JournalJournal of Industrial and Engineering Chemistry
Volume82
DOIs
StatePublished - 25 Feb 2020

Keywords

  • Adsorptive removal
  • Colloidal solution
  • Coordination complex
  • Gallic acid
  • Hydroxyl groups

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