Luminescent europium(III)-organic framework for visual and on-site detection of hydrogen peroxide via a tablet computer

Mao, Xiaoxia; Liu, Shaowei; Su, Benyue; Wang, Dejin; Huang, Zhan Jie; Li, Jian; Zhang, Yuanguang

doi:10.1007/s00604-020-04379-4

Cited by 14 publications

(4 citation statements)

References 45 publications

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“…63,65 A strong absorption peak appeared in Eu-MOF at 3503 cm −1 attributed to the water OH stretching vibration group and two peaks appeared at 1674 and 2929 cm −1 which were related to two asymmetric stretching vibrations of two methyl groups from DMF molecules. 66,67 This indicated that both DMF and water molecules simultaneously work as reactants and solvents. The XRD patterns of the synthesized Eu-MOF (Eu 2 bdc 3 ·4H 2 O), which are highly consistent with the corresponding Eu-MOF crystal material in simulated XRD patterns Tb 2 bdc 3 ·4H 2 O and some of the Eu-MOF crystals reported in the literature, 68–70 are shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

A red luminescent europium metal organic framework (Eu-MOF) integrated with a paper strip using smartphone visual detection for determination of folic acid in pharmaceutical formulations

Kayani

Omer

2022

New J. Chem.

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Section: Resultsmentioning

confidence: 99%

A red luminescent europium metal organic framework (Eu-MOF) integrated with a paper strip using smartphone visual detection for determination of folic acid in pharmaceutical formulations

Kayani

Omer

2022

New J. Chem.

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“…Moreover, there were no extra peaks of precursors (Eu(NO 3 ) 3 and H 3 BTC) in the MOF pattern, implying a high purity of the as-obtained product. 25,27,28 To further identify the coordination of metal ions with organic ligands, FT-IR spectra of the acid ligand (H 3 BTC) and sample (Eu−MOF) were recorded (Figure 1b). The similarity in the characteristic peaks of the two spectra indicates the presence of…”

Section: Resultsmentioning

confidence: 99%

“…All peak locations in the 2θ range 5–50° are well-indexed to the known bulk phase of La(1,3,5-BTC)(H 2 O) 6 , which confirmed the formation of Eu–MOF, and it is consistent with previous studies. , The main diffraction peaks at 9.852, 10.15, 13.295, 17.279, and 20.66° were assigned to the (120), (110), (11-1), (130), and (111) characteristic planes of Eu-BTC, a monoclinic structure. , The vigorous intensity and sharpness of the peaks indicate the crystalline phase of the Eu–MOF. Moreover, there were no extra peaks of precursors (Eu(NO 3 ) 3 and H 3 BTC) in the MOF pattern, implying a high purity of the as-obtained product. ,, To further identify the coordination of metal ions with organic ligands, FT-IR spectra of the acid ligand (H 3 BTC) and sample (Eu–MOF) were recorded (Figure b). The similarity in the characteristic peaks of the two spectra indicates the presence of BTC groups in the Eu–MOF powder.…”

Section: Resultsmentioning

confidence: 99%

Self-Powered UVC Photodetector Based on Europium Metal–Organic Framework for Facile Monitoring Invisible Fire

Nguyen

Bark

2022

ACS Appl. Mater. Interfaces

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The effective use of a europium metal–organic framework (Eu–MOF) as a photoabsorber material has been reported. Using the advantages of Eu–MOFs including simple preparation, wide bandgap structure, and stability in the environment, a self-powered and high UVC-selectivity detector based on Eu–MOF nanoparticles was prepared with a simple device geometry. The as-fabricated photodetector was highly sensitive to 254 nm UV illumination without an external power supply. Accordingly, it exhibited a high UVC-to-UVA rejection ratio (I 254/I 365 ≈ 40) and UVC-to-solar rejection ratio (I 254/I solar light ≈ 34), a fast response time of 98/122 ms, a comparable on/off photocurrent ratio (107.33), and superior stability. The self-powered Eu–MOF photodetector can detect and monitor UV emission from an invisible fire in an early state at room temperature, suggesting practical use as a potential optoelectronic device.

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“…Fetal bovine serum (FBS) is commonly added as a supplement to the basal medium in cell culture. Cells can release H 2 O 2 when stimulated in a cell culture medium containing 10% fetal bovine serum [39,40]. Therefore, sensing performance for application in biological samples can be assessed in a solution containing FBS.…”

Section: Repeatability Interference Studies Storage Stability and Bio...mentioning

confidence: 99%

A Disposable Carbon-Based Electrochemical Cell Modified with Carbon Black and Ag/δ-FeOOH for Non-Enzymatic H2O2 Electrochemical Sensing

Melo,

Nantes,

Ferreira

et al. 2023

Electrochem

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Hydrogen peroxide (H2O2) is an essential analyte for detecting neurodegenerative diseases and inflammatory processes and plays a crucial role in pharmaceuticals, the food industry, and environmental monitoring. However, conventional H2O2 detection methods have drawbacks such as lengthy analysis times, high costs, and bulky equipment. Non-enzymatic sensors have emerged as promising alternatives to overcome these limitations. In this research, we introduce a simple, portable, and cost-effective non-enzymatic sensor that uses carbon black (CB) and silver nanoparticle-modified δ-FeOOH (Ag/δ-FeOOH) integrated into a disposable electrochemical cell (DCell). Scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), and electrochemical impedance spectroscopy (EIS) confirmed successful CB and Ag/δ-FeOOH immobilization on the DCell working electrode. Electrochemical investigations revealed that the DCell-CB//Ag/δ-FeOOH sensor exhibited an approximately twofold higher apparent heterogeneous electron transfer rate constant than the DCell-Ag/δ-FeOOH sensor, capitalizing on CB’s advantages. Moreover, the sensor displayed an excellent electrochemical response for H2O2 reduction, boasting a low detection limit of 22 µM and a high analytical sensitivity of 214 μA mM−1 cm−2. Notably, the DCell-CB//Ag/δ-FeOOH sensor exhibited outstanding selectivity for H2O2 detection, even in potential interferents such as dopamine, uric acid, and ascorbic acid. Furthermore, the sensor has the right qualities for monitoring H2O2 in complex biological samples, as evidenced by H2O2 recoveries ranging from 92% to 103% in 10% fetal bovine serum. These findings underscore the considerable potential of the DCell-CB//Ag/δ-FeOOH sensor for precise and reliable H2O2 monitoring in various biomedical and environmental applications.

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Luminescent europium(III)-organic framework for visual and on-site detection of hydrogen peroxide via a tablet computer

Cited by 14 publications

References 45 publications

A red luminescent europium metal organic framework (Eu-MOF) integrated with a paper strip using smartphone visual detection for determination of folic acid in pharmaceutical formulations

A red luminescent europium metal organic framework (Eu-MOF) integrated with a paper strip using smartphone visual detection for determination of folic acid in pharmaceutical formulations

Self-Powered UVC Photodetector Based on Europium Metal–Organic Framework for Facile Monitoring Invisible Fire

A Disposable Carbon-Based Electrochemical Cell Modified with Carbon Black and Ag/δ-FeOOH for Non-Enzymatic H2O2 Electrochemical Sensing

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