Magnetically Recyclable Metal–Organic Framework@Fe 3 O 4 Composite‐Catalyzed Facile Reduction of Nitroarene Compounds in Aqueous Medium

2017 ◽  
Vol 32 (3) ◽  
pp. e4132 ◽  
Author(s):  
Sen Yang ◽  
Zhi‐Hui Zhang ◽  
Qun Chen ◽  
Ming‐Yang He ◽  
Liang Wang
Keyword(s):  
Aqueous Medium ◽  
Metal Organic Framework ◽  
Metal Organic ◽  
Organic Framework

scholarly journals Selective Detection of nano-molar range Noxious Anions in Water by a Luminescent Metal-Organic Framework

2021 ◽  
Author(s):  
Sudip Kumar Mondal ◽  
Partha Mahata ◽  
Pooja Daga ◽  
Sourav Sarkar ◽  
Prakash Majee ◽  
...  
Keyword(s):  
Aqueous Medium ◽  
Metal Organic Framework ◽  
Selective Detection ◽  
Recognition Ability ◽  
Oxo Anions ◽  
Metal Organic ◽  
Organic Framework

A new metal-organic framework (MOF) showed excellent recognition ability towards five toxic oxo-anions viz. arsenate (HAsO42-), phosphate (PO43-), permanganate (MnO4-), chromate (CrO42-) and dichromate (Cr2O72-) in aqueous medium upon irradiation...

scholarly journals Experimental and Modeling of Dicamba Adsorption in Aqueous Medium Using MIL-101(Cr) Metal-Organic Framework

Processes ◽  
2021 ◽  
Vol 9 (3) ◽  
pp. 419
Author(s):  
Hamza Ahmad Isiyaka ◽  
Khairulazhar Jumbri ◽  
Nonni Soraya Sambudi ◽  
Jun Wei Lim ◽  
Bahruddin Saad ◽  
...  
Keyword(s):  
Aqueous Medium ◽  
Adsorption Capacity ◽  
Environmental Concern ◽  
Metal Organic Framework ◽  
High Surface ◽  
High Surface Area ◽  
Data Matrix ◽  
Adsorption Parameters ◽  
Metal Organic ◽  
Organic Framework

Drift deposition of emerging and carcinogenic contaminant dicamba (3,6-dichloro-2-methoxy benzoic acid) has become a major health and environmental concern. Effective removal of dicamba in aqueous medium becomes imperative. This study investigates the adsorption of a promising adsorbent, MIL-101(Cr) metal-organic framework (MOF), for the removal of dicamba in aqueous solution. The adsorbent was hydrothermally synthesized and characterized using N2 adsorption-desorption isotherms, Brunauer, Emmett and Teller (BET), powdered X-ray diffraction (XRD), Fourier Transformed Infrared (FTIR) and field emission scanning electron microscopy (FESEM). Adsorption models such as kinetics, isotherms and thermodynamics were studied to understand details of the adsorption process. The significance and optimization of the data matrix, as well as the multivariate interaction of the adsorption parameters, were determined using response surface methodology (RSM). RSM and artificial neural network (ANN) were used to predict the adsorption capacity. In each of the experimental adsorption conditions used, the ANN gave a better prediction with minimal error than the RSM model. The MIL-101(Cr) adsorbent was recycled six times to determine the possibility of reuse. The results show that MIL-101(Cr) is a very promising adsorbent, in particular due to the high surface area (1439 m2 g−1), rapid equilibration (~25 min), high adsorption capacity (237.384 mg g−1) and high removal efficiency of 99.432%.

Luminescent metal–organic framework-based phosphor for the detection of toxic oxoanions in an aqueous medium

2020 ◽  
Vol 49 (3) ◽  
pp. 829-840 ◽  
Author(s):  
Debal Kanti Singha ◽  
Prakash Majee ◽  
Sayani Hui ◽  
Sudip Kumar Mondal ◽  
Partha Mahata
Keyword(s):  
Aqueous Medium ◽  
Metal Organic Framework ◽  
Phosphate Ions ◽  
Metal Organic ◽  
Organic Framework

Compound 1 has been utilized for the luminescence based visible detection of chromate, permanganate and phosphate ions in aqueous medium.

In situ encapsulation of pyridine-substituted tetraphenylethene cations in metal–organic framework for the detection of antibiotics in aqueous medium

2019 ◽  
Vol 7 (27) ◽  
pp. 8383-8388 ◽  
Author(s):  
Yan-Mei Ying ◽  
Chen-Lei Tao ◽  
Maoxing Yu ◽  
Yi Xiong ◽  
Chang-Rui Guo ◽  
...  
Keyword(s):  
Aqueous Medium ◽  
Fluorescent Sensor ◽  
Metal Organic Framework ◽  
Aqueous Media ◽  
Sensitive Detection ◽  
Metal Organic ◽  
Nitrofuran Antibiotics ◽  
Organic Framework

A highly luminescent MOF containing tetraphenylethene-based cations has been prepared through in situ encapsulation, which can serve as a fluorescent sensor for selective and sensitive detection of nitrofuran antibiotics in aqueous media.

Rapid switch-on fluorescent detection of nanomolar-level hydrazine in water by a diacetoxy-functionalized MOF: application in paper strips and environmental samples

2020 ◽  
Vol 49 (36) ◽  
pp. 12565-12573
Author(s):  
Soutick Nandi ◽  
Mostakim SK ◽  
Shyam Biswas
Keyword(s):  
Aqueous Medium ◽  
Environmental Samples ◽  
Metal Organic Framework ◽  
Fluorescent Detection ◽  
Turn On ◽  
Metal Organic ◽  
Organic Framework

A diacetoxy-functionalized Zr-based metal–organic framework was employed for the selective, ultra-sensitive, turn-on fluorescent detection of hydrazine in an aqueous medium.

scholarly journals Synthesis of copper metal organic framework based on Schiff base tricarboxylate ligand for highly selective and sensitive detection of 2,4,6-trinitrophenol in aqueous medium

2021 ◽  
Author(s):  
Manpreet Kaur ◽  
M. Yususf ◽  
Ashok Kumar Malik
Keyword(s):  
Schiff Base ◽  
Aqueous Medium ◽  
Electrostatic Interactions ◽  
Density Functional ◽  
Metal Organic Framework ◽  
Copper Metal ◽  
X Ray ◽  
Metal Organic ◽  
Functional Features ◽  
Organic Framework

Abstract By using Schiff base tricarboxylate ligand 5-(4-carboxybenzylideneamino)isophthalic acid (H 3 CIP), a new imine functionalized copper metal organic framework (MOF) has been synthesized solvothermally. It was fully characterized by Fourier Transform Infrared (FTIR) Spectroscopy, Powder X-Ray Diffraction (PXRD), Scanning Electron Microscopy (SEM), Energy Dispersive X-Ray Spectroscopy (EDS), and elemental mapping techniques. The as-synthesized MOF has been utilized as fluorescent probe for detection of nitro aromatic explosives (NAEs). The results show that the copper MOF can be developed into highly selective and sensitive sensor for detection of TNP in the aqueous medium via the “turn-off” quenching response. The linear fitting of the Stern-Volmer plot for TNP offered large quenching constant of 1.07 × 10 4 M −1 for Cu-MOF indicating the high sensitivity of the sensing process. Outstanding sensitivity of prepared material towards TNP detection was further validated by the low detection limit of 80 ppb (0.35 µM). The detailed mechanistic studies for their mode of action and density functional theory (DFT) calculations reveals that photo-induced electron transfer (PET) and fluorescence resonance energy transfer (FRET) processes, as well as electrostatic interactions ( i.e. H-bonding) are the key factors for the turn-off response toward TNP by this fluorescent sensor. Thus, this new LMOF owing to their high water stability and remarkable functional features are potential candidates which can be developed into selective and sensitive TNP detection devices.

scholarly journals Construction of Multifunctional NH2-UiO-66 Metal Organic Framework: Sensing And Photocatalytic Degradation of Ketorolac Tromethamine And Tetracycline In Aqueous Medium

2021 ◽  
Author(s):  
Manpreet Kaur ◽  
Surinder Kumar Mehta ◽  
Sushil Kumar Kansal
Keyword(s):  
Aqueous Medium ◽  
Limit Of Detection ◽  
Metal Organic Framework ◽  
Simultaneous Detection ◽  
Functional Materials ◽  
Solar Light ◽  
Pharmaceutical Drugs ◽  
Fluorescent Intensity ◽  
Metal Organic ◽  
Organic Framework

Abstract Existence of pharmaceutical residues in water has endangered environmental pollution worldwide, which makes it ineludible to develop prospective bifunctional materials which not only possess excellent fluorescence behaviour to monitor pharmaceuticals but also exhibits simultaneous photocatalytic removal efficiency. Strengthened by functionalized metal organic framework (MOF) materials, we present here an amine functionalized zirconium based MOF NH2-UiO-66 which has been successfully synthesized using solvothermal approach. The as prepared MOF was subjected to numerous structural, morphological and compositional characterizations. Interestingly, featured by the excellent fluorescent intensity of MOF modulated by LMCT effect, NH2-UiO-66 was screened to detect pharmaceutical compounds with KTC and TC in aqueous solution. The prepared functionalized MOF showcased excellent sensing platform with magnificent response range (0‒3 µM), lower limit of detection (160 nM; KTC and 140 nM; TC), excellent selectivity and influential anti-interference capability. More importantly, the practical utility of the proposed sensor was further explored for the determination of pharmaceutical drugs in real water samples with suitable recoveries. Simultaneously, the synthesized MOF also exhibited high photocatalytic efficiency towards the removal of KTC and TC under solar light irradiation. The degradation efficiency for KTC and TC was found to be 68.3 % and 71.8 % within 60 and 280 min of solar light, respectively. Moreover, excellent recyclability was demonstrated by the current synthesized system over five cycles. Overall, this study presents a feasible route for the utilization of functionalized MOFs as potential dual functional materials towards the simultaneous detection and degradation of specific pharmaceuticals from aqueous medium.

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