A Novel Naphthalene-Immobilized Nanoporous SBA-15 as a Highly Selective Optical Sensor for Detection of Fe(3+) in Water

J Fluoresc. 2015 Sep;25(5):1297-302. doi: 10.1007/s10895-015-1617-y. Epub 2015 Jul 25.

Abstract

A novel organic-inorganic hybrid optical sensor (SBA-NCO) was designed and synthesized through immobilization of isocyanatopropyl-triethoxysilane and 1-amino-naphthalene onto the surface of SBA-15 by post-grafting method. The characterization of materials using XRD, TEM, N2 adsorption-desorption, and FT-IR techniques confirmed the successful attachment of organic moieties and preserving original structure of SBA-15 after modification step. Fluorescence experiments demonstrated that SBA-NCO was a highly selective optical sensor for the detection of Fe(3+) directly in water over a wide range of metal cations including Na(+), Mg(2+), Al(3+), K(+), Ca(2+), Cr(3+), Mn(2+), Fe(2+), Co(2+), Ni(2+), Cu(2+), Zn(2+), Cd(2+), Hg(2+), and Pb(2+) in a wide pH values.

Keywords: Fe3+; Fluorescence; Nanoporous silica; Naphthalene; Optical sensor; SBA-15.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Absorption, Physicochemical
  • Binding Sites
  • Chemistry Techniques, Analytical / instrumentation*
  • Fluorescent Dyes / chemistry
  • Iron / analysis*
  • Iron / chemistry
  • Nanopores*
  • Naphthalenes / chemistry*
  • Silanes / chemistry
  • Silicon Dioxide / chemistry*
  • Spectrometry, Fluorescence
  • Water / chemistry*

Substances

  • Fluorescent Dyes
  • Naphthalenes
  • SBA-15
  • Silanes
  • Water
  • naphthalene
  • Silicon Dioxide
  • Iron