scholarly journals A CO2optical sensor based on self-assembled metal–organic framework nanoparticles

2018 ◽  
Vol 6 (27) ◽  
pp. 13171-13177 ◽  
Author(s):  
Blanca Chocarro-Ruiz ◽  
Javier Pérez-Carvajal ◽  
Civan Avci ◽  
Olalla Calvo-Lozano ◽  
Maria Isabel Alonso ◽  
...  
Keyword(s):  
Optical Waveguides ◽  
Limit Of Detection ◽  
Metal Organic Framework ◽  
Transparent Film ◽  
Zeolitic Imidazolate Framework ◽  
Metal Organic ◽  
Self Assembled ◽  
Organic Framework

An optical CO2sensor is fabricated by integration of a self-assembled, transparent film of zeolitic imidazolate framework-8 (ZIF-8) nanoparticles onto bimodal optical waveguides. This sensor shows a limit of detection (LOD) of 774 ppm CO2, is robust, fast and reusable, and can be stored under humid conditions with no loss in performance.

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.

Metal–organic framework-derived CoSe2/(NiCo)Se2 box-in-box hollow nanocubes with enhanced electrochemical properties for sodium-ion storage and hydrogen evolution

2017 ◽  
Vol 5 (35) ◽  
pp. 18823-18830 ◽  
Author(s):  
Seung-Keun Park ◽  
Jin Koo Kim ◽  
Yun Chan Kang
Keyword(s):  
Electrochemical Properties ◽  
Hydrogen Evolution ◽  
Metal Organic Framework ◽  
Sodium Ion ◽  
Zeolitic Imidazolate Framework ◽  
Box Structures ◽  
Ion Storage ◽  
Metal Organic ◽  
Sodium Ion Storage ◽  
Organic Framework

Multishell structured metal selenide nanocubes, namely, Co/(NiCo)Se2 box-in-box structures with different shell compositions, were successfully synthesized by applying zeolitic imidazolate framework-67 (ZIF-67) as a template.

scholarly journals Correction: Organic guest molecule induced ultrafast breathing of an epitaxially grown metal–organic framework on a self-assembled monolayer

2021 ◽  
Author(s):  
Purna Chandra Rao ◽  
Prabu Mani ◽  
Younghu Son ◽  
Jiyun Kim ◽  
Minyoung Yoon
Keyword(s):  
Guest Molecule ◽  
Metal Organic Framework ◽  
Self Assembled Monolayer ◽  
Metal Organic ◽  
Self Assembled ◽  
Organic Framework

Correction for ‘Organic guest molecule induced ultrafast breathing of an epitaxially grown metal–organic framework on a self-assembled monolayer’ by Purna Chandra Rao et al., Chem. Commun., 2021, DOI: 10.1039/d1cc03721h.

Self-assembled multifunctional core–shell highly porous metal–organic framework nanoparticles

2020 ◽  
Vol 581 ◽  
pp. 119281
Author(s):  
Jingwen Qiu ◽  
Xue Li ◽  
Karine Steenkeste ◽  
Nadine Barroca-Aubry ◽  
Caroline Aymes-Chodur ◽  
...  
Keyword(s):  
Metal Organic Framework ◽  
Porous Metal ◽  
Core Shell ◽  
Metal Organic ◽  
Self Assembled ◽  
Highly Porous ◽  
Organic Framework

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.

Coating a DNA self-assembled monolayer with a metal organic framework-based exoskeleton for improved sensing performance

The Analyst ◽  
2019 ◽  
Vol 144 (11) ◽  
pp. 3539-3545 ◽  
Author(s):  
Jiehua Ma ◽  
Wenxin Chai ◽  
Jianyang Lu ◽  
Tian Tian ◽  
Shuai Wu ◽  
...  
Keyword(s):  
Metal Organic Framework ◽  
Self Assembled Monolayers ◽  
Self Assembled Monolayer ◽  
New Strategy ◽  
Assembled Monolayers ◽  
Metal Organic ◽  
Self Assembled ◽  
Poor Stability ◽  
Sensing Performance ◽  
Organic Framework

The relatively poor stability of DNA self-assembled monolayers (SAMs) greatly limits their use in real applications. A new strategy is reported to protect the DNA SAMs by using a metal organic framework (MOF)-based exoskeleton.

A yolk–shell structured metal–organic framework with encapsulated iron-porphyrin and its derived bimetallic nitrogen-doped porous carbon for an efficient oxygen reduction reaction

2020 ◽  
Vol 8 (19) ◽  
pp. 9536-9544 ◽  
Author(s):  
Chaochao Zhang ◽  
Hao Yang ◽  
Dan Zhong ◽  
Yang Xu ◽  
Yanzhi Wang ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Porous Carbon ◽  
Metal Organic Framework ◽  
Reduction Reaction ◽  
Iron Porphyrin ◽  
Zeolitic Imidazolate Framework ◽  
Nitrogen Doped ◽  
Metal Organic ◽  
Organic Framework

A yolk–shell structured metal–organic framework (MOF) with encapsulated 5,10,15,20-tetraphenylporphyrinatoiron (FeTPP) in a zeolitic imidazolate framework (ZIF)-L-ZIF-8 is reported.

scholarly journals Rosebengal-Loaded Nanoporous Structure Based on Rare Earth Metal-Organic-Framework: Synthesis, Characterization and Photophysical Performance

Crystals ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 185
Author(s):  
Kai Song ◽  
Han Yu ◽  
Jingyi Zhang ◽  
Yumeng Bai ◽  
Yanjun Guan ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Metal ◽  
Limit Of Detection ◽  
Metal Organic Framework ◽  
Earth Metal ◽  
Nanoporous Structure ◽  
Quenching Effect ◽  
Metal Organic ◽  
Emission Quenching ◽  
Organic Framework

A rosebengal-modified nanoporous structure was designed and constructed. This composite structure consisted of an organic sensitizer based on rosebengal and a supporting host of rare earth metal-organic-framework (MOF). It was identified by means of its x-ray diffraction (XRD) pattern, Infrared (IR) spectra, thermal stability and photophysical measurements. Its absorption was increased by 2,4,6-trinitrophenol. Its rosebengal emission was proportionally increased. But its rare earth emission was well-preserved, offering ratiometric signals. These two sensing modes exhibited linear response and good selectivity with a limit of detection (LOD) of 1.9 μM. Its sensing nature was confirmed as the combination of increased rosebengal emission and rare earth emission quenching effect triggered electron-deficient molecules. This nanoporous structure was superior to traditional ones owing to its double sensing modes.

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