scholarly journals Waste PET as a Reactant for Lanthanide MOF Synthesis and Application in Sensing of Picric Acid

Polymers ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 2015 ◽  
Author(s):  
Feng Zhang ◽  
Shuyi Chen ◽  
Shengqiang Nie ◽  
Jun Luo ◽  
Shaomin Lin ◽  
...  
Keyword(s):  
Terephthalic Acid ◽  
Limit Of Detection ◽  
Picric Acid ◽  
Metal Organic Framework ◽  
Pet Bottles ◽  
Metal Organic ◽  
Lanthanide Metal ◽  
Ft Ir ◽  
First Time ◽  
Organic Framework

In this study, a lanthanide metal organic framework based on the ligand of terephthalic acid derived from waste polyethylene terephthalate (PET) bottles was designed and synthesized. The structure and morphology of the Tb-BDC was investigated by X-ray diffractometry (XRD), Fourier transform infrared spectroscopy (FT-IR), and scanning electron microscopy (SEM). The Tb-BDC displays a high selectivity and sensitivity towards picric acid (TNP). The luminescence intensities exhibit a linear relation, with a concentration of TNP over the range of 1 × 10−5–1 × 10−4 M, with a limit of detection of 1 × 10−5 M. The sensing mechanism is also discussed. This is the first time that waste PET materials have been used as the starting precursor of terephthalic acid (BDC) for the fabrication of lanthanide MOF (metal organic framework), which is applied in sensing TNP.

Solvent-Free Powder Synthesis and MOF-CVD Thin Films of the Mesoporous Metal-Organic Framework MAF-6

2019 ◽  
Author(s):  
Timothée Stassin ◽  
Ivo Stassen ◽  
Joao Marreiros ◽  
Alexander John Cruz ◽  
Rhea Verbeke ◽  
...  
Keyword(s):  
Vapor Phase ◽  
Metal Organic Framework ◽  
Chemical Vapor ◽  
Uptake Capacity ◽  
Powder Synthesis ◽  
Crystalline Films ◽  
Metal Organic ◽  
Mesoporous Metal ◽  
First Time ◽  
Organic Framework

A simple solvent- and catalyst-free method is presented for the synthesis of the mesoporous metal-organic framework (MOF) MAF-6 (RHO-Zn(eIm)2) based on the reaction of ZnO with 2-ethylimidazole vapor at temperatures ≤ 100 °C. By translating this method to a chemical vapor deposition (CVD) protocol, mesoporous crystalline films could be deposited for the first time entirely from the vapor phase. A combination of PALS and Kr physisorption measurements confirmed the porosity of these MOF-CVD films and the size of the MAF-6 supercages (diam. ~2 nm), in close agreement with powder data and calculations. MAF-6 powders and films were further characterized by XRD, TGA, SEM, FTIR, PDF and EXAFS. The exceptional uptake capacity of the mesoporous MAF-6 in comparison to the microporous ZIF-8 is demonstrated by vapor-phase loading of a molecule larger than the ZIF-8 windows.

Lanthanide Metal–Organic Framework-Based Fluorescent Sensor Arrays to Discriminate and Quantify Ingredients of Natural Medicine

Langmuir ◽  
2021 ◽  
Vol 37 (17) ◽  
pp. 5321-5328
Author(s):  
Kunpeng Yin ◽  
Siqi Wu ◽  
Hao Zheng ◽  
Liang Gao ◽  
Jinfeng Liu ◽  
...  
Keyword(s):  
Fluorescent Sensor ◽  
Metal Organic Framework ◽  
Sensor Arrays ◽  
Natural Medicine ◽  
Metal Organic ◽  
Lanthanide Metal ◽  
Organic Framework

scholarly journals Construction of Silver Quantum Dot Immobilized Zn-MOF-8 Composite for Electrochemical Sensing of 2,4-Dinitrotoluene

2019 ◽  
Vol 9 (22) ◽  
pp. 4952 ◽  
Author(s):  
Sushma Rani ◽  
Bharti Sharma ◽  
Shivani Kapoor ◽  
Rajesh Malhotra ◽  
Rajender S. Varma ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Limit Of Detection ◽  
Metal Organic Framework ◽  
Linear Sweep Voltammetry ◽  
Electrochemical Sensing ◽  
Amperometric Determination ◽  
Transmission Electron ◽  
Electro Catalysis ◽  
Metal Organic ◽  
Organic Framework

In the present study, we report a highly effective electrochemical sensor for detecting 2,4-dinitrotoluene (2,4-DNT). The amperometric determination of 2,4-DNT was carried out using a gold electrode modified with zinc–metal organic framework-8 and silver quantum dot (Zn-MOF-8@AgQDs) composite. The synthesized nanomaterials were characterized by using transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR) and X-ray powder diffraction (XRD). The synthesized nanocomposite proved to be efficient in electro-catalysis thereby reducing the 2,4-DNT. The unique combination present in Zn-MOF-8@AgQDs composite offered an excellent conductivity and large surface area enabling the fabrication of a highly sensitive (−0.238 µA µM−1 cm−2), selective, rapid and stable 2,4-DNT sensor. The dynamic linear range and limit of detection (LOD) was about 0.0002 µM to 0.9 µM and 0.041 µM, respectively. A 2,4-DNT reduction was also observed during the linear sweep voltammetry (LSV) experiments with reduction peaks at −0.49 V and −0.68 V. This is an unprecedented report with metal organic framework (MOF) composite for sensing 2,4-DNT. In addition, the presence of other species such as thiourea, urea, ammonia, glucose, and ascorbic acid displayed no interference in the modified electrode suggesting its practicability in various environmental applications.

Solvothermal synthesis of new metal organic framework structures in the zinc–terephthalic acid–dimethyl formamide system

2005 ◽  
Vol 178 (11) ◽  
pp. 3342-3351 ◽  
Author(s):  
Henrik Fanø Clausen ◽  
Rasmus Damgaard Poulsen ◽  
Andrew D. Bond ◽  
Marie-Agnes S. Chevallier ◽  
Bo Brummerstedt Iversen
Keyword(s):  
Solvothermal Synthesis ◽  
Terephthalic Acid ◽  
Metal Organic Framework ◽  
Dimethyl Formamide ◽  
Metal Organic ◽  
Organic Framework

A flexible Eu(iii)-based metal–organic framework: turn-off luminescent sensor for the detection of Fe(iii) and picric acid

2013 ◽  
Vol 42 (34) ◽  
pp. 12403 ◽  
Author(s):  
Xin-Hui Zhou ◽  
Liang Li ◽  
Hong-Hui Li ◽  
Ao Li ◽  
Tao Yang ◽  
...  
Keyword(s):  
Picric Acid ◽  
Metal Organic Framework ◽  
Luminescent Sensor ◽  
Metal Organic ◽  
Organic Framework

A chiral lanthanide metal–organic framework for selective sensing of Fe(iii) ions

2016 ◽  
Vol 45 (3) ◽  
pp. 1040-1046 ◽  
Author(s):  
Xiao-Lin Zhao ◽  
Dan Tian ◽  
Qiang Gao ◽  
Hong-Wei Sun ◽  
Jian Xu ◽  
...  
Keyword(s):  
Metal Organic Framework ◽  
Luminescence Quenching ◽  
Metal Organic ◽  
Lanthanide Metal ◽  
Helical Channels ◽  
Organic Framework

A new luminescent lanthanide metal–organic framework was successfully synthesized, featuring rare 1D chiral helical channels and a highly selective luminescence quenching response to Fe3+ ions.

Reversible switching of slow magnetic relaxation in a classic lanthanide metal–organic framework system

2013 ◽  
Vol 49 (74) ◽  
pp. 8244 ◽  
Author(s):  
Qi Zhou ◽  
Fen Yang ◽  
Bingjing Xin ◽  
Guang Zeng ◽  
Xiaojing Zhou ◽  
...  
Keyword(s):  
Magnetic Relaxation ◽  
Metal Organic Framework ◽  
Slow Magnetic Relaxation ◽  
Metal Organic ◽  
Lanthanide Metal ◽  
Framework System ◽  
Organic Framework

High Proton Conduction at above 100 °C Mediated by Hydrogen Bonding in a Lanthanide Metal–Organic Framework

2014 ◽  
Vol 136 (35) ◽  
pp. 12444-12449 ◽  
Author(s):  
Qun Tang ◽  
Yiwei Liu ◽  
Shuxia Liu ◽  
Danfeng He ◽  
Jun Miao ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Metal Organic Framework ◽  
Proton Conduction ◽  
High Proton ◽  
Metal Organic ◽  
Lanthanide Metal ◽  
Organic Framework
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