Synthesis of yttrium(III)-based rare-earth metal-organic framework nanoplates and its applications for sensing of fluoride ions and pH

Wang, Xianfeng; Chu, Chengxiang; Wu, Yawen; Deng, Yulin; Zhou, Jun; Yang, Mei; Zhang, Suyi; Huo, Danqun; Hou, Changjun

doi:10.1016/j.snb.2020.128455

Cited by 51 publications

(31 citation statements)

References 39 publications

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“…Among them, the binding energy of C═O decreased by 0.024 eV, and that of C-O increased by 0.034 eV, which indicated that the coordination bond between Eu 3+ and the ligand became weaker, thereby reducing the energy transfer efficiency. [36] In addition, the O1s spectrum is deconvoluted into three peaks at 531.804, 532.674, and 533.119 eV (Figure 5c), respectively, which belong to -OH, C-O, and C═O bonds. [37] After acid soaking, the XPS spectrum of the O also changed to some extent as shown in Figure 5d.…”

Section: Acid Rain Detection Mechanismmentioning

confidence: 99%

Ethyl Cellulose/Rare Earth Complexes Light‐Conversion Films and Exploration in Acid Rain Detection

Zhang

et al. 2021

Macro Materials & Eng

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Generally, precipitation with pH less than 5.6 is considered acid rain, which will have adverse effects on water, soil, animals, and plants, etc, therefore, rapid detection of acid rain is of great significance. In this work, the rare earth europium is combined with 4,4,4-trifluoro-1-phenyl-1,3-butanedione to obtain the Eu 3+ complex, Eu(BTA) 3 (H 2 O) 2 . As an auxiliary ligand and matrix, ethyl cellulose avoided the fluorescence quenching caused by uneven dispersion of the complex in the matrix and while sensitizing the fluorescence of Eu 3+ . The rare earth complex light-conversion film is successfully prepared. The results showed that the film has good responsiveness to pH value. In the process of neutral to acidic aqueous solution, the fluorescence is gradually quenched and exhibits a good linear relationship, when the aqueous solution changed from acid to neutral, the fluorescence will be restored, and the fluorescence intensity can still maintain above 90% after 5 repetitions. In addition, the light-conversion film has excellent light conversion ability and high color purity. It can transform harmful ultraviolet light into red light which is conducive to photosynthesis, as well as prevent damage of acid rain to plants and has a certain positive effect on agricultural production.

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Section: Acid Rain Detection Mechanismmentioning

confidence: 99%

Ethyl Cellulose/Rare Earth Complexes Light‐Conversion Films and Exploration in Acid Rain Detection

Zhang

et al. 2021

Macro Materials & Eng

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“…Second, the Co-MOF structure had 2, 4, and 6 coordination numbers, which provided a large number of coordinated cobalt metal centers with d-orbitals, part of them were used for coordination with ligands, whereas the redundant open metal site provided the binding or adsorption positions and high probability of replacement toward F – . 4 , 9 Third, the fluorine ion has the smallest ion radius among all varieties of anions, which makes F – the easiest replacement of solvents like H 2 O in the Co-MOF unit cell, enhancing the frequency of the interaction between F – and the Co-MOF. 4 , 9 Fourth, a Lewis acid–base strong interaction may occur between the Co-MOF and F – , such as Lewis acid–base and open metal centers, offering specific recognition of small molecules such as F – 4 .…”

Section: Resultsmentioning

confidence: 99%

“… 4 , 9 Third, the fluorine ion has the smallest ion radius among all varieties of anions, which makes F – the easiest replacement of solvents like H 2 O in the Co-MOF unit cell, enhancing the frequency of the interaction between F – and the Co-MOF. 4 , 9 Fourth, a Lewis acid–base strong interaction may occur between the Co-MOF and F – , such as Lewis acid–base and open metal centers, offering specific recognition of small molecules such as F – 4 . Lastly, the strong electronegativity of the fluoride ion made a photoinduced electron transfer within the Co-MOF structure, leading to a photoluminescence red shift.…”

Section: Resultsmentioning

confidence: 99%

“… 1 , 11 So, some international organizations like “The American Dental Association (ADA) and The U.S. Environmental Protection Agency (EPA)” recommended F – concentrations of ∼0.6 to 1.2 mg/L and ∼2 to 4 mg/L in bottled water and drinking water, respectively. 9 , 13 A F – dose of 1.5–4.0 mg/day is recommended in an adult diet, and for children in their first 12 months, the dietary recommended dose per day is 0.1–1 mg. 1 , 4 In a recent study, 14 the statistical results showed that about 200 million people, in about 25 countries, are still under the danger of F – overdoses. 15 − 17 …”

Section: Introductionmentioning

confidence: 99%

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Selective and Fast Detection of Fluoride-Contaminated Water Based on a Novel Salen-Co-MOF Chemosensor

Alhaddad

El‐Sheikh

2021

ACS Omega

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The development of selective and fast optical sensitive chemosensors for the detection and recognition of different cations and anions in a domain is still a challenge in biological, industrial, and environmental fields. Herein, we report a novel approach for the detection and determination of fluoride ion (F – ) sensing based on a salen-cobalt metal-organic framework (Co(II)-MOF). By a simple method, the Co(II)-MOF was synthesized and characterized using several tools to elucidate the structure and morphology. The photoluminescence (PL) spectrum of the Co(II)-MOF (100.0 nM/L) was examined versus different ionic species like F – , Br – , Cl – , I – , SO 4 2– , and NO 3 – and some cationic species like Mg 2+ , Ca 2+ , Na + , and K + . In the case of F – ions, the PL intensity of the Co(II)-MOF was scientifically enhanced with a remarkable red shift. With the increase of F – concentration, the Co(II)-MOF PL emission spectrum was also professionally enhanced. The limit of detection (LOD) for the Co(II)-MOF chemosensor was 0.24 μg/L, while the limit of quantification (LOQ) was 0.72 μg/L. Moreover, a comparison of the Co(II)-MOF optical approach with other published reports was studied, and the mechanism of interaction was also investigated. Additionally, the applicability of the current Co(II)-MOF approach in different real water samples, such as tap water, drinking water, Nile River water, and wastewater, was extended. This easy-to-use future sensor provides reliable detection of F – in everyday applications for nonexpert users, especially in remote rural areas.

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“…This work provided a new design concept for fluoride chemosensors using solvatochromic chemosensors, which could not only detect fluoride anions, but could also additionally detect organic solvents. The same year, X. Wang and coauthors synthesized rare-earth metal-organic frameworks (RE-MOFs) ( Wang et al, 2020 ). RE-MOFs were successfully used for fluoride detection in bottled water and Chinese green tea (Biluochun) with acceptable results.…”

Section: Other Additional Functionsmentioning

confidence: 99%

Hydrogen-Bonded Colorimetric and Fluorescence Chemosensor for Fluoride Anion With High Selectivity and Sensitivity: A Review

et al. 2021

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In recent years, the wide application of fluoride materials has grown rapidly, therefore excessive discharge in the surrounding environment, especially in drinking water and organic effluent, has become a potential hazard to humans, and has even resulted in fluorosis disease. The development of a highly effective and convenient method to recognize fluoride anions in surrounding environments seems necessary and urgent. Among which, the development of a colorimetric and fluorescence fluoride chemosensor with obvious color changing allowing for naked-eye detection with high sensitivity and selectivity is more interesting and challenging. In this minireview, current novel colorimetric and fluorescence chemosensors for fluoride anions by hydrogen-bond interaction are introduced, including obvious color changing by naked-eye detection, high sensitivity and selectivity, non-pollution and fluoride extraction ability, aqueous detection, and other additional functions. Finally, the perspective of the fluoride chemosensor design concept and potential evolution trends are pointed out.

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Synthesis of yttrium(III)-based rare-earth metal-organic framework nanoplates and its applications for sensing of fluoride ions and pH

Cited by 51 publications

References 39 publications

Ethyl Cellulose/Rare Earth Complexes Light‐Conversion Films and Exploration in Acid Rain Detection

Ethyl Cellulose/Rare Earth Complexes Light‐Conversion Films and Exploration in Acid Rain Detection

Selective and Fast Detection of Fluoride-Contaminated Water Based on a Novel Salen-Co-MOF Chemosensor

Hydrogen-Bonded Colorimetric and Fluorescence Chemosensor for Fluoride Anion With High Selectivity and Sensitivity: A Review

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