Effects of polar modifiers on supercritical extraction efficiency for organic template removal from mesoporous MCM-41 materials

2013 ◽  
Vol 82 ◽  
pp. 96-105 ◽  
Author(s):  
Zhen Huang ◽  
Jing-huan Li ◽  
Hui-shan Li ◽  
Li-jun Teng ◽  
S. Kawi ◽  
...  
Keyword(s):  
Extraction Efficiency ◽  
Supercritical Extraction ◽  
Organic Template ◽  
Template Removal ◽  
Mcm 41

Kinetic study of template removal of MCM-41 nanostructured material

2004 ◽  
Vol 75 (2) ◽  
pp. 693-698 ◽  
Author(s):  
M. J. B. Souza ◽  
A. O. S. Silva ◽  
J. M. F. B. Aquino ◽  
V. J. Fernandes Jr. ◽  
A. S. Araújo
Keyword(s):  
Kinetic Study ◽  
Nanostructured Material ◽  
Template Removal ◽  
Mcm 41

Novel Method for Soft Template Removal in the Synthesis of MCM-41 Mesoporous Materials

2003 ◽  
Vol 90-91 ◽  
pp. 79-84 ◽  
Author(s):  
Edit Meretei ◽  
Dóra Méhn ◽  
János Halász ◽  
Imre Kiricsi
Keyword(s):  
Mesoporous Materials ◽  
Soft Template ◽  
Template Removal ◽  
Novel Method ◽  
Mcm 41

Influence of the incorporated metal on template removal from MCM-41 type mesoporous materials

2011 ◽  
Vol 106 (2) ◽  
pp. 355-361 ◽  
Author(s):  
Luiz K. C. de Souza ◽  
Juliana J. R. Pardauil ◽  
José R. Zamian ◽  
Geraldo N. da Rocha Filho ◽  
Carlos E. F. da Costa
Keyword(s):  
Mesoporous Materials ◽  
Template Removal ◽  
Mcm 41

Post-synthesis pore expansion of mesoporous silica SBA-15 in the organic template removal via solvothermal treatment

2015 ◽  
Vol 60 (11) ◽  
pp. 1019-1025 ◽  
Author(s):  
Nan Li ◽  
Yongsheng Li ◽  
Shengjue Lu ◽  
Xingdi Zhang ◽  
Jianzhuang Chen ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Organic Template ◽  
Template Removal ◽  
Solvothermal Treatment ◽  
Post Synthesis ◽  
Pore Expansion

Template removal in MCM-41 type materials by solvent extraction

2011 ◽  
Vol 89 (11) ◽  
pp. 2330-2343 ◽  
Author(s):  
A. Marcilla ◽  
M. Beltran ◽  
A. Gómez-Siurana ◽  
I. Martinez ◽  
D. Berenguer
Keyword(s):  
Solvent Extraction ◽  
Template Removal ◽  
Mcm 41

Towards mesoporous Keggin-type polyoxometalates – systematic study on organic template removal

2013 ◽  
Vol 1 (20) ◽  
pp. 6238 ◽  
Author(s):  
Thomas Lunkenbein ◽  
Marleen Kamperman ◽  
Martin Schieder ◽  
Sebastian With ◽  
Zihui Li ◽  
...  
Keyword(s):  
Systematic Study ◽  
Organic Template ◽  
Template Removal ◽  
Keggin Type

scholarly journals Tamoxifen Delivery System Based on PEGylated Magnetic MCM-41 Silica

Molecules ◽  
2020 ◽  
Vol 25 (21) ◽  
pp. 5129
Author(s):  
Margarita Popova ◽  
Neli Koseva ◽  
Ivalina Trendafilova ◽  
Hristina Lazarova ◽  
Violeta Mitova ◽  
...  
Keyword(s):  
Density Functional ◽  
Incipient Wetness Impregnation ◽  
Gravimetric Analysis ◽  
Template Removal ◽  
Pegylated Nanoparticles ◽  
Ft Ir ◽  
Surface Modified ◽  
Ir Spectroscopic ◽  
Mcm 41

Magnetic iron oxide containing MCM-41 silica (MM) with ~300 nm particle size was developed. The MM material before or after template removal was modified with NH2- or COOH-groups and then grafted with PEG chains. The anticancer drug tamoxifen was loaded into the organic groups’ modified and PEGylated nanoparticles by an incipient wetness impregnation procedure. The amount of loaded drug and the release properties depend on whether modification of the nanoparticles was performed before or after the template removal step. The parent and drug-loaded samples were characterized by XRD, N2 physisorption, thermal gravimetric analysis, and ATR FT-IR spectroscopy. ATR FT-IR spectroscopic data and density functional theory (DFT) calculations supported the interaction between the mesoporous silica surface and tamoxifen molecules and pointed out that the drug molecule interacts more strongly with the silicate surface terminated by silanol groups than with the surface modified with carboxyl groups. A sustained tamoxifen release profile was obtained by an in vitro experiment at pH = 7.0 for the PEGylated formulation modified by COOH groups after the template removal. Free drug and formulated tamoxifen samples were further investigated for antiproliferative activity against MCF-7 cells.

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