Fluoride ion sensing in aqueous medium by employing nitrobenzoxadiazole-postgrafted mesoporous silica nanoparticles (MCM-41)

2015 ◽  
Vol 17 (5) ◽  
pp. 3525-3533 ◽  
Author(s):  
Gaurav Jha ◽  
Anoop N. ◽  
Abdur Rahaman ◽  
Moloy Sarkar
Keyword(s):  
Mesoporous Silica ◽  
Silica Nanoparticles ◽  
Aqueous Medium ◽  
Mesoporous Silica Nanoparticles ◽  
Fluoride Ion ◽  
Selective Detection ◽  
Ion Sensing ◽  
Mcm 41

A nitrobenzoxadiazole (NBD) anchored mesoporous silica-based system has been designed and developed for the selective detection of fluoride in aqueous medium.

Solid-State NMR Study of MCM-41-type Mesoporous Silica Nanoparticles

2005 ◽  
Vol 127 (9) ◽  
pp. 3057-3068 ◽  
Author(s):  
Julien Trébosc ◽  
Jerzy W. Wiench ◽  
Seong Huh ◽  
Victor S.-Y. Lin ◽  
Marek Pruski
Keyword(s):  
Solid State ◽  
Mesoporous Silica ◽  
Silica Nanoparticles ◽  
Solid State Nmr ◽  
Mesoporous Silica Nanoparticles ◽  
Nmr Study ◽  
Mcm 41

Conjugation-induced fluorescence labelling of mesoporous silica nanoparticles for the sensitive and selective detection of copper ions in aqueous solution

2014 ◽  
Vol 38 (12) ◽  
pp. 6017-6024 ◽  
Author(s):  
Jingjing Cui ◽  
Shangfeng Wang ◽  
Kai Huang ◽  
Yongsheng Li ◽  
Wenru Zhao ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Detection Limit ◽  
Mesoporous Silica ◽  
Silica Nanoparticles ◽  
High Selectivity ◽  
Copper Ions ◽  
Mesoporous Silica Nanoparticles ◽  
Selective Detection ◽  
Fluorescence Labelling

A newly developed fluorescent “on–off” chemosensor presents high selectivity towards Cu2+ with detection limit as low as 0.28 μM.

On the hydrothermal stability of MCM-41 mesoporous silica nanoparticles and the preparation of luminescent materials

2010 ◽  
Vol 20 (26) ◽  
pp. 5504 ◽  
Author(s):  
Fabio Carniato ◽  
Chiara Bisio ◽  
Geo Paul ◽  
Giorgio Gatti ◽  
Luca Bertinetti ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Silica Nanoparticles ◽  
Mesoporous Silica Nanoparticles ◽  
Hydrothermal Stability ◽  
Luminescent Materials ◽  
Mcm 41

Molecular Ionic Liquid Supported on Mesoporous Silica Nanoparticles-Imprinted Iron Metal: A Recyclable Heterogeneous Catalyst for One-Pot, Three-Component Synthesis of a Library of Benzodiazepines

2019 ◽  
Vol 16 (1) ◽  
pp. 136-144 ◽  
Author(s):  
Vajihe Nejadshafiee ◽  
Hossein Naeimi
Keyword(s):  
Ionic Liquid ◽  
Mesoporous Silica ◽  
Silica Nanoparticles ◽  
Mesoporous Silica Nanoparticles ◽  
One Pot ◽  
Environmental Friendliness ◽  
Iron Metal ◽  
Catalytic Cyclization ◽  
Recyclable Heterogeneous Catalyst ◽  
Mcm 41

Aim and Objective: A novel and convenient transformation for the synthesis of benzodiazepines has been developed via catalytic cyclization reaction using ionic liquid supported on mesoporous silica nanoparticles- imprinted iron metal (Fe-MCM-41-IL) as a recyclable catalyst under mild conditions. Materials and Methods: For preparation of Fe-MCM-41-IL, FeCl3·6H2O was added to a mixture of distilled water, CTAB and NaOH aqueous solution. The tetraethyl orthosilicate was dropped into the solution under stirring. The product was separated, washed, and dried. The solid product was collected and calcined. Then, to a solution of β-hydroxy-1,2,3-triazole in toluene, 3-chloropropyltrimethoxysilane was added and the mixture was refluxed. The Conc. H2SO4 was added dropwise into the above solution and stirred. For immobilization of IL onto Fe-MCM-41, the solution IL was added to Fe-MCM-41 and was refluxed for the production of the Fe- MCM-41. Following this, benzodiazepines were synthesized using Fe-MCM-41-IL as a catalyst. </P><P> Results: The Fe-MCM-41-IL was prepared and characterized by a different analysis. The activity of the prepared catalyst as the above described was tested in the model reaction of o-phenyldiamine, tetronic acid, and different aldehydes under room temperature in ethanol solvent. Also, the catalyst could be recovered for five cycles. Conclusion: We developed a novel nanocatalyst for the synthesis of benzodiazepines in excellent yields. Fe- MCM-41-IL as a catalyst has advantages such as: environmental friendliness, reusability and easy recovery of the catalyst using an external magnet.

Effect of Functionalization Synthesis Type of Amino-MCM-41 Mesoporous Silica Nanoparticles on Its RB5 Adsorption Capacity and Kinetics

Silicon ◽  
2018 ◽  
Vol 11 (3) ◽  
pp. 1547-1555 ◽  
Author(s):  
William A. Talavera-Pech ◽  
Alejandro Ávila-Ortega ◽  
Daniella Pacheco-Catalán ◽  
Patricia Quintana-Owen ◽  
Jesus A. Barrón-Zambrano
Keyword(s):  
Mesoporous Silica ◽  
Silica Nanoparticles ◽  
Adsorption Capacity ◽  
Mesoporous Silica Nanoparticles ◽  
Mcm 41
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