Trace water mediated growth of oriented single-crystalline mesoporous metal–organic frameworks on gold nanorods

2018 ◽  
Vol 54 (59) ◽  
pp. 8182-8185 ◽  
Author(s):  
Zehao Zhou ◽  
Mengyuan Li ◽  
Jian Zhao ◽  
Zhenghan Di ◽  
Chunzhi Di ◽  
...  
Keyword(s):  
Gold Nanorods ◽  
Metal Organic Frameworks ◽  
Single Crystalline ◽  
Metal Organic ◽  
Mesoporous Metal ◽  
Trace Water ◽  
First Time

The growth of single-crystalline mesoporous MOFs with well-controlled orientation on the surface of gold nanorods was reported for the first time.

Defective Pt nanoparticles encapsulated in mesoporous metal–organic frameworks for enhanced catalysis

2018 ◽  
Vol 54 (64) ◽  
pp. 8822-8825 ◽  
Author(s):  
Qiang Wang ◽  
Xu-Sheng Wang ◽  
Chun-Hui Chen ◽  
Xue Yang ◽  
Yuan-Biao Huang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Active Sites ◽  
Metal Organic Frameworks ◽  
Pt Nanoparticles ◽  
Mild Conditions ◽  
Metal Organic ◽  
Mesoporous Metal ◽  
First Time

Highly ultrafine defective Pt nanoparticles (NPs) encapsulated in the mesopores of MIL-101 (Pt(Co)@MIL-101) were achieved for the first time through a chemical dealloying approach. The obtained material could provide more active sites to contact reactants and showed superior catalytic activity towards the hydrogenation of nitroarenes under mild conditions.

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.

Micro and mesoporous metal–organic frameworks for catalysis applications

2010 ◽  
Vol 39 (7) ◽  
pp. 1692-1694 ◽  
Author(s):  
Praveen K. Thallapally ◽  
Carlos A. Fernandez ◽  
Radha Kishan Motkuri ◽  
Satish K. Nune ◽  
Jun Liu ◽  
...  
Keyword(s):  
Metal Organic Frameworks ◽  
Metal Organic ◽  
Mesoporous Metal

scholarly journals The nanoscaled metal-organic framework ICR-2 as a carrier of porphyrins for photodynamic therapy

2018 ◽  
Vol 9 ◽  
pp. 2960-2967 ◽  
Author(s):  
Jan Hynek ◽  
Sebastian Jurík ◽  
Martina Koncošová ◽  
Jaroslav Zelenka ◽  
Ivana Křížová ◽  
...  
Keyword(s):  
Inorganic Chemistry ◽  
Photodynamic Therapy ◽  
Photophysical Properties ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Biological Applications ◽  
Nanoparticle Surface ◽  
Metal Organic ◽  
Unsaturated Metal Sites ◽  
First Time

Nanosized porphyrin-containing metal-organic frameworks (MOFs) attract considerable attention as solid-state photosensitizers for biological applications. In this study, we have for the first time synthesised and characterised phosphinate-based MOF nanoparticles, nanoICR-2 (Inorganic Chemistry Rez). We demonstrate that nanoICR-2 can be decorated with anionic 5,10,15,20-tetrakis(4-R-phosphinatophenyl)porphyrins (R = methyl, isopropyl, phenyl) by utilizing unsaturated metal sites on the nanoparticle surface. The use of these porphyrins allows for superior loading of the nanoparticles when compared with commonly used 5,10,15,20-tetrakis(4-carboxyphenyl)porphyrin. The nanoICR-2/porphyrin composites retain part of the free porphyrins photophysical properties, while the photodynamic efficacy is strongly affected by the R substituent at the porphyrin phosphinate groups. Thus, phosphinatophenylporphyrin with phenyl substituents has the strongest photodynamic efficacy due to the most efficient cellular uptake.

scholarly journals Influence of Ligand Functionalization of UiO-66-Based Metal-Organic Frameworks When Used as Sorbents in Dispersive Solid-Phase Analytical Microextraction for Different Aqueous Organic Pollutants

Molecules ◽  
2018 ◽  
Vol 23 (11) ◽  
pp. 2869 ◽  
Author(s):  
Iván Taima-Mancera ◽  
Priscilla Rocío-Bautista ◽  
Jorge Pasán ◽  
Juan Ayala ◽  
Catalina Ruiz-Pérez ◽  
...  
Keyword(s):  
High Performance ◽  
Solid Phase ◽  
Metal Organic Frameworks ◽  
Aqueous Sample ◽  
Optimization Study ◽  
Relative Standard ◽  
Polycyclic Aromatic ◽  
Metal Organic ◽  
Array Detection ◽  
First Time

Four metal-organic frameworks (MOFs), specifically UiO-66, UiO-66-NH2, UiO-66-NO2, and MIL-53(Al), were synthesized, characterized, and used as sorbents in a dispersive micro-solid phase extraction (D-µSPE) method for the determination of nine pollutants of different nature, including drugs, phenols, polycyclic aromatic hydrocarbons, and personal care products in environmental waters. The D-µSPE method, using these MOFs as sorbents and in combination with high-performance liquid chromatography (HPLC) and diode-array detection (DAD), was optimized. The optimization study pointed out to UiO-66-NO2 as the best MOF to use in the multi-component determination. Furthermore, the utilization of isoreticular MOFs based on UiO-66 with the same topology but different functional groups, and MIL-53(Al) to compare with, allowed us for the first time to evaluate the influence of such functionalization of the ligand with regards to the efficiency of the D-µSPE-HPLC-DAD method. Optimum conditions included: 20 mg of UiO-66-NO2 MOF in 20 mL of the aqueous sample, 3 min of agitation by vortex and 5 min of centrifugation, followed by the use of only 500 µL of acetonitrile as desorption solvent (once the MOF containing analytes was separated), 5 min of vortex and 5 min of centrifugation. The validation of the D-µSPE-HPLC-DAD method showed limits of detection down to 1.5 ng·L−1, average relative recoveries of 107% for a spiked level of 1.50 µg·L−1, and inter-day precision values with relative standard deviations lower than 14%, for the group of pollutants considered.

scholarly journals Titelbild: Zirconium-Metalloporphyrin PCN-222: Mesoporous Metal-Organic Frameworks with Ultrahigh Stability as Biomimetic Catalysts (Angew. Chem. 41/2012)

2012 ◽  
Vol 124 (41) ◽  
pp. 10343-10343 ◽  
Author(s):  
Dawei Feng ◽  
Zhi-Yuan Gu ◽  
Jian-Rong Li ◽  
Hai-Long Jiang ◽  
Zhangwen Wei ◽  
...  
Keyword(s):  
Metal Organic Frameworks ◽  
Biomimetic Catalysts ◽  
Metal Organic ◽  
Mesoporous Metal

Adsorption behavior and structure transformation of mesoporous metal–organic frameworks towards arsenates and organic pollutants in aqueous solution

2018 ◽  
Vol 2 (7) ◽  
pp. 1389-1396 ◽  
Author(s):  
Jianhua Cai ◽  
Xuhui Mao ◽  
Wei-Guo Song
Keyword(s):  
Aqueous Solution ◽  
Organic Pollutants ◽  
Metal Organic Frameworks ◽  
Adsorption Behavior ◽  
Structure Transformation ◽  
Adsorptive Removal ◽  
Metal Organic ◽  
Mesoporous Metal ◽  
Highly Porous

Highly porous, water stable metal–organic frameworks, MIL-100(Fe,Al), were investigated for the adsorptive removal of arsenates.

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