A Novel Naphthalene-Immobilized Nanoporous SBA-15 as a Highly Selective Optical Sensor for Detection of Fe3+ in Water

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.

GSH-doped GQDs using citric acid rich-lime oil extract for highly selective and sensitive determination and discrimination of Fe3+ and Fe2+ in the presence of H2O2 by a fluorescence “turn-off” sensor

“…In recent years, several uorescence sensors have been widely investigated for the selective detection of iron speciation in biological systems because of their ability to provide a simple, sensitive, and selective method for monitoring without the need for any pretreatment of the sample; these techniques also have the advantages of spatial and temporal resolution. [19][20][21] Therefore, the development of a novel uorescence probe with low cytotoxicity, excellent biocompatibility, and high water solubility has become increasingly important and urgent. Recently, graphene quantum dots (GQDs) have ignited increasing research interest as an exciting class of carbon nanomaterial, and have emerged as a potential new platform in designing and tuning uorescence (FL) biosensing and imaging.…”

SBA-15 Functionalized with Naphthalene Derivative for Selective Optical Sensing of Cr2O72− in Water

“…It showed selectivity for sensing Fe 3+ in water. 32 The prepared sensor in this work was prepared in two step and evaluated toward various anions. It exhibited a high selectivity and sensitivity for the detection of dichromate ions in water.…”

Fluorescence study of 5-nitroisatin Schiff base immobilized on SBA-15 for sensing Fe3+

“…Amongst heavy metals, iron plays an important function in living organisms and their metabolism such as oxygen-carrying and the formation of the hemoglobin [1]. However, excessive Fe 3+ in the human body causes various problems such as cancers and dysfunction of organs while an iron deficiency can lead to anemia [2,3]. For these reasons, detecting iron ions have been an interesting area of research.…”