SBA-Pr-Is-TAP Functionalized Nanostructured Silica as a Highly Selective Fluorescent Chemosensor for Fe3+ and Cr2O72- Ions in Aqueous Media

Ghodsi Mohammadi Ziarani; Maryam Akhgar; Fatemeh Mohajer; Alireza Badiei; Rafael Luque

doi:10.3390/nano11102533

SBA-Pr-Is-TAP Functionalized Nanostructured Silica as a Highly Selective Fluorescent Chemosensor for Fe³⁺ and Cr₂O₇^2- Ions in Aqueous Media

Nanomaterials (Basel). 2021 Sep 28;11(10):2533. doi: 10.3390/nano11102533.

Authors

Ghodsi Mohammadi Ziarani¹, Maryam Akhgar¹, Fatemeh Mohajer¹, Alireza Badiei², Rafael Luque³

Affiliations

¹ Department of Chemistry, Faculty of Physics and Chemistry, Alzahra University, Tehran 1993893979, Iran.
² School of Chemistry, College of Science, University of Tehran, Tehran 1417614411, Iran.
³ Departamento de Quimica Organica, Grupo FQM-383, Campus de Rabanales, Universidad de Cordoba, Edificio Marie Curie, Ctra Nnal IV-A, Km 396, E14014 Córdoba, Spain.

Abstract

SBA-Pr-Is-TAP was synthesized via functionalization of SBA-15. The synthesized hybrid nanomaterial was characterized by various techniques including FT-IR, TGA, XRD, SEM, and BET. SBA-Pr-Is-TAP could precisely bind Fe³⁺ and Cr₂O₇^2- ions among a range of different species in aqueous media, consequently acting as a nanoporous chemosensor of Fe³⁺ and Cr₂O₇^2- ions. An excellent linear relation was observed between the nanoporous chemosensor and ion concentrations, with acceptable detection limits of 2.43 × 10^-6 M and 3.96 × 10^-7 M for Fe³⁺ and Cr₂O₇^2- ions respectively.

Keywords: 2,4,6-triaminoprymidine; Fe3+ and Cr2O72− ions; SBA-Pr-Is-TAP; aqueous media; chemosensor; fluorescent spectroscopy; functionalized mesoporous silica; isatin.