Preparation of Eu0.075Tb0.925-Metal Organic Framework as a Fluorescent Probe and Application in the Detection of Fe3+ and Cr2O72−

Luminescent Ln-MOFs (Eu0.075Tb0.925-MOF) were successfully synthesised through the solvothermal reaction of Tb(NO3)3·6H2O, Eu(NO3)3·6H<s...

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Autores principales:	Jie Yin, Hongtao Chu, Shili Qin, Haiyan Qi, Minggang Hu
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	Ln-MOFs luminous sensing Fe<sup>3+</sup> Cr<sub>2</sub>O<sub>7</sub><sup>2−</sup> Chemical technology TP1-1185
Acceso en línea:	https://doaj.org/article/e4d62909fc0d43beb134563a2889d5ad
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spelling	oai:doaj.org-article:e4d62909fc0d43beb134563a2889d5ad2021-11-11T19:17:45ZPreparation of Eu<sub>0.075</sub>Tb<sub>0.925</sub>-Metal Organic Framework as a Fluorescent Probe and Application in the Detection of Fe<sup>3+</sup> and Cr<sub>2</sub>O<sub>7</sub><sup>2−</sup>10.3390/s212173551424-8220https://doaj.org/article/e4d62909fc0d43beb134563a2889d5ad2021-11-01T00:00:00Zhttps://www.mdpi.com/1424-8220/21/21/7355https://doaj.org/toc/1424-8220Luminescent Ln-MOFs (Eu<sub>0.075</sub>Tb<sub>0.925</sub>-MOF) were successfully synthesised through the solvothermal reaction of Tb(NO<sub>3</sub>)<sub>3</sub>·6H<sub>2</sub>O, Eu(NO<sub>3</sub>)<sub>3</sub>·6H<sub>2</sub>O, and the ligand pyromellitic acid. The product was characterised by X-ray diffraction (XRD), TG analysis, EM, X-ray photoelectron spectroscopy (XPS), and luminescence properties, and results show that the synthesised material Eu<sub>0.075</sub>Tb<sub>0.925</sub>-MOF has a selective ratio-based fluorescence response to Fe<sup>3+</sup> or Cr<sub>2</sub>O<sub>7</sub><sup>2−</sup>. On the basis of the internal filtering effect, the fluorescence detection experiment shows that as the concentration of Fe<sup>3+</sup> or Cr<sub>2</sub>O<sub>7</sub><sup>2−</sup> increases, the intensity of the characteristic emission peak at 544 nm of Tb<sup>3+</sup> decreases, and the intensity of the characteristic emission peak at 653 nm of Eu<sup>3+</sup> increases in Eu<sub>0.075</sub>Tb<sub>0.925</sub>-MOF. The fluorescence intensity ratio (I<sub>653</sub>/I<sub>544</sub>) has a good linear relationship with the target concentration. The detection linear range for Fe<sup>3+</sup> or Cr<sub>2</sub>O<sub>7</sub><sup>2−</sup> is 10–100 μM/L, and the detection limits are 2.71 × 10<sup>−7</sup> and 8.72 × 10<sup>−7</sup> M, respectively. Compared with the sensor material with a single fluorescence emission, the synthesised material has a higher anti-interference ability. The synthesised Eu<sub>0.075</sub>Tb<sub>0.925</sub>-MOF can be used as a highly selective and recyclable sensing material for Fe<sup>3+</sup> or Cr<sub>2</sub>O<sub>7</sub><sup>2−</sup>. This material should be an excellent candidate for multifunctional sensors.Jie YinHongtao ChuShili QinHaiyan QiMinggang HuMDPI AGarticleLn-MOFsluminous sensingFe<sup>3+</sup>Cr<sub>2</sub>O<sub>7</sub><sup>2−</sup>Chemical technologyTP1-1185ENSensors, Vol 21, Iss 7355, p 7355 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Ln-MOFs luminous sensing Fe<sup>3+</sup> Cr<sub>2</sub>O<sub>7</sub><sup>2−</sup> Chemical technology TP1-1185
spellingShingle	Ln-MOFs luminous sensing Fe<sup>3+</sup> Cr<sub>2</sub>O<sub>7</sub><sup>2−</sup> Chemical technology TP1-1185 Jie Yin Hongtao Chu Shili Qin Haiyan Qi Minggang Hu Preparation of Eu<sub>0.075</sub>Tb<sub>0.925</sub>-Metal Organic Framework as a Fluorescent Probe and Application in the Detection of Fe<sup>3+</sup> and Cr<sub>2</sub>O<sub>7</sub><sup>2−</sup>
description	Luminescent Ln-MOFs (Eu<sub>0.075</sub>Tb<sub>0.925</sub>-MOF) were successfully synthesised through the solvothermal reaction of Tb(NO<sub>3</sub>)<sub>3</sub>·6H<sub>2</sub>O, Eu(NO<sub>3</sub>)<sub>3</sub>·6H<sub>2</sub>O, and the ligand pyromellitic acid. The product was characterised by X-ray diffraction (XRD), TG analysis, EM, X-ray photoelectron spectroscopy (XPS), and luminescence properties, and results show that the synthesised material Eu<sub>0.075</sub>Tb<sub>0.925</sub>-MOF has a selective ratio-based fluorescence response to Fe<sup>3+</sup> or Cr<sub>2</sub>O<sub>7</sub><sup>2−</sup>. On the basis of the internal filtering effect, the fluorescence detection experiment shows that as the concentration of Fe<sup>3+</sup> or Cr<sub>2</sub>O<sub>7</sub><sup>2−</sup> increases, the intensity of the characteristic emission peak at 544 nm of Tb<sup>3+</sup> decreases, and the intensity of the characteristic emission peak at 653 nm of Eu<sup>3+</sup> increases in Eu<sub>0.075</sub>Tb<sub>0.925</sub>-MOF. The fluorescence intensity ratio (I<sub>653</sub>/I<sub>544</sub>) has a good linear relationship with the target concentration. The detection linear range for Fe<sup>3+</sup> or Cr<sub>2</sub>O<sub>7</sub><sup>2−</sup> is 10–100 μM/L, and the detection limits are 2.71 × 10<sup>−7</sup> and 8.72 × 10<sup>−7</sup> M, respectively. Compared with the sensor material with a single fluorescence emission, the synthesised material has a higher anti-interference ability. The synthesised Eu<sub>0.075</sub>Tb<sub>0.925</sub>-MOF can be used as a highly selective and recyclable sensing material for Fe<sup>3+</sup> or Cr<sub>2</sub>O<sub>7</sub><sup>2−</sup>. This material should be an excellent candidate for multifunctional sensors.
format	article
author	Jie Yin Hongtao Chu Shili Qin Haiyan Qi Minggang Hu
author_facet	Jie Yin Hongtao Chu Shili Qin Haiyan Qi Minggang Hu
author_sort	Jie Yin
title	Preparation of Eu<sub>0.075</sub>Tb<sub>0.925</sub>-Metal Organic Framework as a Fluorescent Probe and Application in the Detection of Fe<sup>3+</sup> and Cr<sub>2</sub>O<sub>7</sub><sup>2−</sup>
title_short	Preparation of Eu<sub>0.075</sub>Tb<sub>0.925</sub>-Metal Organic Framework as a Fluorescent Probe and Application in the Detection of Fe<sup>3+</sup> and Cr<sub>2</sub>O<sub>7</sub><sup>2−</sup>
title_full	Preparation of Eu<sub>0.075</sub>Tb<sub>0.925</sub>-Metal Organic Framework as a Fluorescent Probe and Application in the Detection of Fe<sup>3+</sup> and Cr<sub>2</sub>O<sub>7</sub><sup>2−</sup>
title_fullStr	Preparation of Eu<sub>0.075</sub>Tb<sub>0.925</sub>-Metal Organic Framework as a Fluorescent Probe and Application in the Detection of Fe<sup>3+</sup> and Cr<sub>2</sub>O<sub>7</sub><sup>2−</sup>
title_full_unstemmed	Preparation of Eu<sub>0.075</sub>Tb<sub>0.925</sub>-Metal Organic Framework as a Fluorescent Probe and Application in the Detection of Fe<sup>3+</sup> and Cr<sub>2</sub>O<sub>7</sub><sup>2−</sup>
title_sort	preparation of eu<sub>0.075</sub>tb<sub>0.925</sub>-metal organic framework as a fluorescent probe and application in the detection of fe<sup>3+</sup> and cr<sub>2</sub>o<sub>7</sub><sup>2−</sup>
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/e4d62909fc0d43beb134563a2889d5ad
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_version_	1718431617314193408

Preparation of Eu<sub>0.075</sub>Tb<sub>0.925</sub>-Metal Organic Framework as a Fluorescent Probe and Application in the Detection of Fe<sup>3+</sup> and Cr<sub>2</sub>O<sub>7</sub><sup>2−</sup>

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