scholarly journals Synthesis and optical properties of covalently bound Nile Red in mesoporous silica hybrids – comparison of dye distribution of materials prepared by facile grafting and by co-condensation routes

RSC Advances ◽  
2016 ◽  
Vol 6 (8) ◽  
pp. 6209-6222 ◽  
Author(s):  
Markus Börgardts ◽  
Kathrin Verlinden ◽  
Manuel Neidhardt ◽  
Tobias Wöhrle ◽  
Annika Herbst ◽  
...  
Keyword(s):  
Optical Properties ◽  
Mesoporous Silica ◽  
Nile Red ◽  
Ordered Mesoporous ◽  
Fluorescence Dye ◽  
Silica Hybrids ◽  
Hexagonally Ordered ◽  
Mcm 41 ◽  
Covalently Bound

The fluorescence dye Nile Red (NR) can be covalently ligated to hexagonally ordered, mesoporous MCM-41 materialsviaco-condensation and post grafting routes for investigating differences in the dye distribution.

scholarly journals Functionalized Ordered Mesoporous Silicas (MCM-41): Synthesis and Applications in Catalysis

Catalysts ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 617 ◽  
Author(s):  
Gabriel Martínez-Edo ◽  
Alba Balmori ◽  
Iris Pontón ◽  
Andrea Martí del Rio ◽  
David Sánchez-García
Keyword(s):  
Mesoporous Silica ◽  
Pore Structure ◽  
Metallic Nanoparticles ◽  
Mesoporous Silicas ◽  
Acid Catalysts ◽  
Catalytic Systems ◽  
Research Attention ◽  
Ordered Mesoporous ◽  
Regioselective Functionalization ◽  
Mcm 41

Mesoporous silica sieves are among the most studied nano-objects due to their stable pore structure and easy preparation. In particular, MCM-41 have attracted increasing research attention due to their chemical versatility. This review focuses on the synthesis and regioselective functionalization of MCM-41 to prepare catalytic systems. The topics covered are: mono and di-functionalized MCM-41 as basic and acid catalysts, catalysts based on metallic complexes and heteropolyacids supported onto MCM-41, metallic nanoparticles embed onto functionalized MCM-41 and magnetic MCM-41 for catalytic purposes.

scholarly journals Determination of toluene hydrogenation kinetics with neutron diffraction

2016 ◽  
Vol 18 (26) ◽  
pp. 17237-17243 ◽  
Author(s):  
Marta Falkowska ◽  
Sarayute Chansai ◽  
Haresh G. Manyar ◽  
Lynn F. Gladden ◽  
Daniel T. Bowron ◽  
...  
Keyword(s):  
Neutron Diffraction ◽  
Mesoporous Silica ◽  
Ordered Mesoporous Silica ◽  
Total Neutron ◽  
Toluene Hydrogenation ◽  
Ordered Mesoporous ◽  
Hydrogenation Kinetics ◽  
Hydrogenation Of Toluene ◽  
Mcm 41

Total neutron scattering has been used to follow the hydrogenation of toluene-d8 to methylcyclohexane-d14 over 3 wt% platinum supported on highly ordered mesoporous silica (MCM-41) at 298 K and under 150–250 mbar D2 pressure.

scholarly journals Mesoporous Silica as a Drug Delivery System for Naproxen: Influence of Surface Functionalization

Molecules ◽  
2020 ◽  
Vol 25 (20) ◽  
pp. 4722
Author(s):  
Lukáš Žid ◽  
Vladimír Zeleňák ◽  
Miroslav Almáši ◽  
Adriana Zeleňáková ◽  
Jaroslava Szücsová ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Surface Functionalization ◽  
High Performance ◽  
Nitrogen Adsorption ◽  
Ethanol Solution ◽  
Physiological Solution ◽  
Ordered Mesoporous ◽  
Ft Ir ◽  
Hexagonally Ordered ◽  
Adsorption Desorption

In this work we describe the relationship between surface modification of hexagonally ordered mesoporous silica SBA-15 and loading/release characteristics of nonsteroidal anti-inflammatory drug (NSAID) naproxen. Mesoporous silica (MPS) was modified with 3-aminopropyl, phenyl and cyclohexyl groups by grafting method. Naproxen was adsorbed into pores of the prepared MPS from ethanol solution using a solvent evaporation method. The release of the drug was performed in buffer medium at pH 2 and physiological solution at pH 7.4. Parent MPSs as well as naproxen loaded MPSs were characterized using physicochemical techniques such as nitrogen adsorption/desorption, thermogravimetric analysis (TG), Zeta potential analysis, Fourier transform infrared spectroscopy (FT-IR), and elemental analysis. The amount of naproxen released from the MPSs into the medium was determined by high-performance liquid chromatography (HPLC). It was shown that the adsorption and desorption characteristics of naproxen are dependent on the pH of the solution and the surface functionalization of the host.

Templated self-assembly of ordered mesoporous silica on clay nanotubes

2019 ◽  
Vol 55 (38) ◽  
pp. 5507-5510 ◽  
Author(s):  
Aleksandr Glotov ◽  
Nikolay Levshakov ◽  
Anna Stavitskaya ◽  
Maria Artemova ◽  
Pavel Gushchin ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Self Assembly ◽  
Catalytic Properties ◽  
Ordered Mesoporous Silica ◽  
Ordered Mesoporous ◽  
Clay Nanotubes ◽  
Mcm 41

Self-assembly of ordered silica arrays on clay nanotubes resulted in mesoporous MCM-41 type materials with enhanced catalytic properties.

Optical properties of thick ordered mesoporous silica membranes

2011 ◽  
Vol 8 (6) ◽  
pp. 1941-1945 ◽  
Author(s):  
Kumar Vanga ◽  
Dawdon Cheam ◽  
Christopher Middlebrook ◽  
Paul Bergstrom
Keyword(s):  
Optical Properties ◽  
Mesoporous Silica ◽  
Ordered Mesoporous Silica ◽  
Silica Membranes ◽  
Ordered Mesoporous

Enhancing phosphate removal from water by using ordered mesoporous silica loaded with samarium oxide

2015 ◽  
Vol 7 (23) ◽  
pp. 10052-10060 ◽  
Author(s):  
Bingqian Han ◽  
Nan Chen ◽  
Dongyang Deng ◽  
Shaojuan Deng ◽  
Igor Djerdj ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Sol Gel ◽  
Phosphate Removal ◽  
Ordered Mesoporous Silica ◽  
Samarium Oxide ◽  
Silica Source ◽  
Ordered Mesoporous ◽  
Samarium Chloride ◽  
One Step ◽  
Mcm 41

A series of ordered mesoporous silica loaded with samarium oxide (Sm-MCM-41) were synthesized by a facile one-step sol–gel route using CTAB as the template, TEOS as the silica source, and hexahydrated samarium chloride as the precursor.

Confinement of zinc oxide nanoparticles in ordered mesoporous silica MCM-41

2012 ◽  
Vol 133 (2-3) ◽  
pp. 850-856 ◽  
Author(s):  
P.B. Lihitkar ◽  
Samuel Violet ◽  
Mandar Shirolkar ◽  
Jai Singh ◽  
O.N. Srivastava ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Mesoporous Silica ◽  
Zinc Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Ordered Mesoporous Silica ◽  
Ordered Mesoporous ◽  
Mcm 41
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