Effects of different amounts of APTES on physicochemical and structural properties of amino-functionalized MCM-41-MSNs

Mesoporous silica nanoparticles (MSNs) are frequently functionalized to be used for specific applications, including catalysis and biomedical engineering. In this research, MCM-41-MSNs were synthesized by the sol–gel method and were functionalized with different quantities of (3-aminopropyl) trietho...

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Bibliographic Details
Published in:Journal of sol-gel science and technology 2016-12, Vol.80 (3), p.697-708
Main Authors: Talavera-Pech, William Alejandro, Esparza-Ruiz, Adriana, Quintana-Owen, Patricia, Vilchis-Nestor, Alfredo Rafael, Carrera-Figueiras, Cristian, Ávila-Ortega, Alejandro
Format: Article
Language:English
Subjects:
Aminopropyltriethoxysilane
Biomedical engineering
Biomedical materials
Catalysis
Ceramics
Chemical synthesis
Chemistry and Materials Science
colloids
Composites
etc.
fibers
Glass
Grafting
Inorganic Chemistry
Materials Science
Nanoparticles
Nanotechnology
Natural Materials
Optical and Electronic Materials
Original Paper: Nano-structured materials (particles
Silicon dioxide
Sol-gel processes
Structural analysis
X ray photoelectron spectroscopy
Zeta potential
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Summary:Mesoporous silica nanoparticles (MSNs) are frequently functionalized to be used for specific applications, including catalysis and biomedical engineering. In this research, MCM-41-MSNs were synthesized by the sol–gel method and were functionalized with different quantities of (3-aminopropyl) triethoxysilane (APTES) using a post-grafting method to determine the physicochemical and structural changes in the MSNs. The functionalized materials were assessed by different characterization techniques, namely, TGA, FTIR, BET, SEM, TEM, DLS, zeta potential, SAXS, XRD and XPS. The FTIR data confirmed the presence of amino groups on the MSN surfaces, and the results from the XPS, TGA and zeta potential demonstrated that the APTES concentration during post-grafting directly affects the quantity of amino groups bound to the MSNs. The SAXS, TEM and nitrogen adsorption–desorption analyses showed that as the amount of APTES in the MSNs increases, the mesoporous structure become more disordered. Graphical Abstract
ISSN:0928-0707
1573-4846
DOI:10.1007/s10971-016-4163-4