Real-Time Multiple Beam Interferometry Reveals Complex Deformations of Metal–Organic-Framework Crystals upon Humidity Adsorption/Desorption

2015 ◽  
Vol 119 (29) ◽  
pp. 16769-16776 ◽  
Author(s):  
Theodoros Baimpos ◽  
Buddha Ratna Shrestha ◽  
Qingyun Hu ◽  
Georgi Genchev ◽  
Markus Valtiner
Keyword(s):  
Real Time ◽  
Metal Organic Framework ◽  
Multiple Beam ◽  
Metal Organic ◽  
Adsorption Desorption ◽  
Multiple Beam Interferometry ◽  
Organic Framework

scholarly journals A STUDY ON HYDROTHERMAL SYNTHESIS OF METAL–ORGANIC FRAMEWORK MIL-101

2017 ◽  
Vol 126 (1C) ◽  
pp. 21
Author(s):  
Võ Thị Thanh Châu ◽  
Hoàng Văn Đức
Keyword(s):  
Hydrothermal Synthesis ◽  
Photoelectron Spectroscopy ◽  
Metal Organic Framework ◽  
Hydrothermal Process ◽  
Nitrogen Adsorption ◽  
X Ray ◽  
Transmission Electron ◽  
Metal Organic ◽  
Adsorption Desorption ◽  
Organic Framework

<p>In the present paper, a synthesis of MIL-101 by hydrothermal process was demonstrated. The obtained samples were characterized by powder X-ray diffraction (PXRD), transmission electron microscope (TEM), nitrogen adsorption/desorption isotherms at 77K, X-ray photoelectron spectroscopy (XPS). The results showed that MIL-101 synthesized by optimal conditions exhibited high crystallinity and surface area. The obtained MIL-101 possesses high stability in water and several organic solvents.</p><p><strong>Keywords:</strong> MIL-101, hydrothermal synthesis, metal organic framework-101. </p>

scholarly journals Unveiling the mechanism of lattice-mismatched crystal growth of a core–shell metal–organic framework

2019 ◽  
Vol 10 (41) ◽  
pp. 9571-9575 ◽  
Author(s):  
Fajar I. Pambudi ◽  
Michael W. Anderson ◽  
Martin P. Attfield
Keyword(s):  
Crystal Growth ◽  
Epitaxial Growth ◽  
Real Time ◽  
Growth Mechanism ◽  
Metal Organic Framework ◽  
Core Shell ◽  
Metal Organic ◽  
Organic Framework

Real time microscopy reveals the nanoscopic epitaxial growth mechanism and form of a severely lattice-mismatched shell MOF in a core–shell MOF.

Shear Exfoliated Metal–Organic Framework Nanosheet-Enabled Flexible Sensor for Real-Time Monitoring of Superoxide Anion

2020 ◽  
Vol 12 (5) ◽  
pp. 5429-5436 ◽  
Author(s):  
Qiming Qiu ◽  
Huayun Chen ◽  
Zhiheng You ◽  
Yuyan Feng ◽  
Xiao Wang ◽  
...  
Keyword(s):  
Real Time ◽  
Superoxide Anion ◽  
Metal Organic Framework ◽  
Real Time Monitoring ◽  
Flexible Sensor ◽  
Metal Organic ◽  
Organic Framework

scholarly journals Study of Curcumin Adsorption of Nano Fe-based Metal-Organic Framework

2020 ◽  
Vol 4 (4) ◽  
pp. First
Author(s):  
Trang Thị Thu Nguyễn ◽  
Ý Thị Đặng ◽  
Linh Hồ Thùy Nguyễn ◽  
Hạnh Thị Kiều Tạ ◽  
Thắng Bách Phan ◽  
...  
Keyword(s):  
Particle Size ◽  
Metal Organic Framework ◽  
Crystal Formation ◽  
X Ray Diffraction ◽  
Isothermal Adsorption ◽  
Framework Materials ◽  
Metal Organic ◽  
Ft Ir ◽  
Adsorption Desorption ◽  
Organic Framework

Highly porous and biocompatible nano metal-organic framework materials (NMOF) are increasingly being applied in biomedical fields, especially as pharmaceutical adsorbent materials. Curcumin, found in turmeric, is a widely common herb in Eastern which has recently used in many applications in supporting cancer treatment. In the synthesis of MOF materials, the use of surfactants allows to control the morphology, the process of crystal formation and development and particle size of the material. In this research, MIL-100 (Fe) nanomaterials were successfully synthesized at room temperature in the presence of polyvinylpyrrolidone surfactant (PVP) to control the nanoparticle size about 50 nm in size. The synthesized MOF structure and properties were analyzed by using characterization techniques, including powder X-ray diffraction (PXRD), fourier-transform infrared (FT-IR), thermal gravimetric analyses (TGA) and nitrogen isothermal adsorption-desorption at 77 K. The characterization results showed that MIL-100 (Fe) nanomaterials have high crystallinity, large surface area, and highly thermal stability. However, its particle size is very small, only about 50 nm. Curcumin adsorption studies exhibited that this material had the ability to adsorb curcumin with an adsorption capacity up to 64.36 mg g-1. Kinetic and mechanism studies revealed that curcumin adsorption followed the pseudo-second model. In addition, thermodynamic studies proved that this was a spontaneous and exothermic adsorption process.

Turn-On Luminescence Sensing and Real-Time Detection of Traces of Water in Organic Solvents by a Flexible Metal-Organic Framework

2014 ◽  
Vol 54 (5) ◽  
pp. 1651-1656 ◽  
Author(s):  
Antigoni Douvali ◽  
Athanassios C. Tsipis ◽  
Svetlana V. Eliseeva ◽  
Stéphane Petoud ◽  
Giannis S. Papaefstathiou ◽  
...  
Keyword(s):  
Real Time ◽  
Organic Solvents ◽  
Metal Organic Framework ◽  
Turn On ◽  
Metal Organic ◽  
Real Time Detection ◽  
Flexible Metal ◽  
Organic Framework

scholarly journals Aqueous synthesis of highly adsorptive copper–gallic acid metal–organic framework

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Badril Azhar ◽  
Artik Elisa Angkawijaya ◽  
Shella Permatasari Santoso ◽  
Chintya Gunarto ◽  
Aning Ayucitra ◽  
...  
Keyword(s):  
Gallic Acid ◽  
Metal Organic Framework ◽  
Synthesis Temperature ◽  
Molar Ratio ◽  
Aqueous Synthesis ◽  
Synthesis Conditions ◽  
Metal Organic ◽  
The Stability ◽  
Adsorption Desorption ◽  
Organic Framework

Abstract A greener route to synthesize mesoporous copper–gallic acid metal–organic framework (CuGA MOF) than the conventional method using harmful DMF solvent was proposed in this study. Various synthesis attempts were conducted by modifying the synthesis conditions to produce CuGA MOF with comparable physical properties to a reference material (DMF-synthesized CuGA NMOF). The independent variables investigated include the molar ratio of NaOH to GA (1.1 to 4.4) and the synthesis temperature (30, 60, 90 °C). It was found that proper NaOH addition was crucial for suppressing the generation of copper oxide while maximizing the formation of CuGA MOF. On the other hand, the reaction temperature mainly affected the stability and adsorption potential of CuGA MOF. Reacting Cu, GA, and NaOH at a molar ratio of 1:1:2.2 and a temperature of 90 °C, produced mesoporous MOF (CuGA 90–2.2) with a surface area of 198.22 m2/g, a pore diameter of 8.6 nm, and a thermal stability of 219 °C. This MOF exhibited an excellent adsorption capacity for the removal of methylene blue (124.64 mg/g) and congo red (344.54 mg/g). The potential usage of CuGA 90–2.2 as a reusable adsorbent was demonstrated by its high adsorption efficiency (> 90%) after 5 adsorption–desorption cycles.

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