A novel strategy for the synthesis of samarium/europium-metal organic frameworks, and their utilization for detection of Cr3+, Pb2+, and acetone as a luminescent sensor with superior selectivity and sensitivity properties

Asad Syed

doi:10.1016/j.saa.2024.124345

A novel strategy for the synthesis of samarium/europium-metal organic frameworks, and their utilization for detection of Cr³⁺, Pb²⁺, and acetone as a luminescent sensor with superior selectivity and sensitivity properties

Spectrochim Acta A Mol Biomol Spectrosc. 2024 Aug 5:316:124345. doi: 10.1016/j.saa.2024.124345. Epub 2024 Apr 24.

Author

Asad Syed¹

Affiliation

¹ Department of Botany and Microbiology, College of Science, King Saud University, P.O. 2455, Riyadh 11451, Saudi Arabia. Electronic address: assyed@ksu.edu.sa.

PMID: 38685161
DOI: 10.1016/j.saa.2024.124345

Abstract

With outstanding detection selectivity and sensitivity characteristics, samarium/europium-metal organic frameworks (Sm/Eu-MOF) is capable of functioning as a versatile light-emitting sensor particularly for detecting acetone, Cr³⁺, and Pb²⁺ in aqueous environment. While considering maximum detectable concentrations of 0.85 μM, 0.46 μM, and 1.04 μM, respectively, competitive energy interactions for acetone, absorption of energy for Cr³⁺, and substitution of ions for Pb²⁺ are the elucidated mechanisms of detecting these substances by Sm/Eu-MOF. Successful formulation and synthesis of a core-shell structured Sm/Eu-MOF, which has endurance to acid/alkali conditions and hydration/heat-stability, can be accomplished by utilizing Samarium and Europium nitrate ions, terephthalic acid, and 2, 5-furandicarboxylic acid. The recovery rate of acetone, Cr³⁺, and Pb²⁺ detection from real samples were 95.0-101.0 %, 99.8-101.0 %, and 99.9-104.0 %, respectively.

Keywords: Acetone; Cr(3+); Luminescence quenching; Pb(2+); Sm/Eu-MOF.