Detection of Cr(III), prometryn, and ibuprofen by hybrid Eu(III)- dipicolinate kaolinite luminescent sensor

Author(s)

Clementino, F. C. ; Peixoto, V. G. ; de Araujo, D. T. ; Ciuffi, K. J. ; Nassar, E. J. ; Vicente, M. A. ; Rives, V. ; de Faria, E. H.

• Document type: Journal article
• Source: APPLIED CLAY SCIENCE; v. 227, p. 14-pg., 2022-09-15.

Abstract

Europium (III) was complexed on solids prepared by kaolinite functionalization with pyridine 2-carboxylic and pyridine 2,6-dicarboxylic acids; the luminescent properties of the obtained solids were analyzed for evaluating their application as luminescent sensors of prometryn, ibuprofen and chromium (III). The luminescent hybrid materials were characterized through powder X-ray diffraction, infrared absorption spectroscopy, thermal analysis, scanning electron microscopy, ultraviolet/visible absorption spectroscopy, energy dispersion and photoluminescence spectroscopy (excitation and emission) and lifetime measurements of the excited state. The materials proved to be promising, with quantum efficiencies of 31.16% and 45.18% for the samples functionalized with picolinic and dipicolinic acids, respectively. For the contaminant adsorption tests, the solid with picolinic acid showed better detection efficiency in a lower concentration range for chromium (III) than solids with dipicolinic acid, while both showed similar ranges for the organic contaminants. (AU)

• FAPESP's process: 17/15482-1 - Novel strategies synthesis to reuse Tanner industry by-products to obtain high-value functional porous materials
• Grantee: Emerson Henrique de Faria
• Support Opportunities: Regular Research Grants
• FAPESP's process: 17/01719-0 - Biohybrid materials (kaolinite-amino acid) as luminescent sensors for emerging pollutants
• Grantee: Denis Talarico de Araujo
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 18/26569-3 - Biohybrid materials (kaolinite-amino acids) as luminescent sensors for organic emmerging pollutants.
• Grantee: Denis Talarico de Araujo
• Support Opportunities: Scholarships abroad - Research Internship - Doctorate
• FAPESP's process: 12/11673-3 - Thin films obtained by spin and dip-coating using sol-gel methodology
• Grantee: Eduardo José Nassar
• Support Opportunities: Regular Research Grants
• FAPESP's process: 16/01501-1 - Multifunctional catalysts for advanced oxidation processes employing biogenic matrices or clays
• Grantee: Katia Jorge Ciuffi Pires
• Support Opportunities: Regular Research Grants
• FAPESP's process: 11/03335-8 - Ironporphyrins as catalysts in oxidation reaction of cyclohexane and Baeyer-Villeger: heterogeneous systems
• Grantee: Katia Jorge Ciuffi Pires
• Support Opportunities: Regular Research Grants
• FAPESP's process: 13/19523-3 - Functional Biohybrid materials based on layered and/or fibrous natural clays with multifaceted applications
• Grantee: Emerson Henrique de Faria
• Support Opportunities: Regular Research Grants