Preparation and characterization of novel mixed periodic mesoporous organosilica nanoparticles
Li, Hao (Universitat Autònoma de Barcelona. Departament de Química)
Raehm, Laurence (Université de Montpellier. Centre National de la Recherche Scientifique)
Charnay, Clarence (Université de Montpellier. Centre National de la Recherche Scientifique)
Durand, Jean-Olivier (Université de Montpellier. Centre National de la Recherche Scientifique)
Pleixats i Rovira, Roser (Universitat Autònoma de Barcelona. Departament de Química)

Date:	2020
Abstract:	We report herein the preparation of mixed periodic mesoporous organosilica nanoparticles (E-Pn 75/25 and 90/10 PMO NPs) by sol-gel co-condensation of E -1,2-bis(triethoxysilyl)ethylene ((E)-BTSE or E) with previously synthesized disilylated tert -butyl 3,5-dialkoxybenzoates bearing either sulfide (precursor P1) or carbamate (precursor P2) functionalities in the linker. The syntheses were performed with cetyltrimethylammonium bromide (CTAB) as template in the presence of sodium hydroxide in water at 80 °C. The nanomaterials have been characterized by Transmission Electron Microscopy (TEM), nitrogen-sorption measurements (BET), Dynamic Light Scattering (DLS), zeta-potential, Thermogravimetric Analysis (TGA), FTIR, 13 C CP MAS NMR and small angle X-ray diffraction (p-XRD). All the nanomaterials were obtained as mesoporous rodlike-shape nanoparticles. Remarkably, E-Pn 90/10 PMO NPs presented high specific surface areas ranging from 700 to 970 m 2 g −1, comparable or even higher than pure E PMO nanorods. Moreover, XRD analyses showed an organized porosity for E-P1 90/10 PMO NPs typical for a hexagonal 2D symmetry. The other materials showed a worm-like mesoporosity.
Grants:	Agencia Estatal de Investigación RTI2018-097853-B-I00 Ministerio de Ciencia e Innovación RED2018-102387-T Ministerio de Economía y Competitividad CTQ2014-53662-P Ministerio de Economía y Competitividad CTQ2016-81797-REDC Agència de Gestió d'Ajuts Universitaris i de Recerca SGR/2017-0465
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Periodic mesoporous organosilica nanoparticles ; Sol-gel process ; Disilylated tert -butyl 3,5-dialkoxybenzoates
Published in:	Materials, Vol. 13, Issue 7 (April 2020) , art. 1569, ISSN 1996-1944

DOI: 10.3390/ma13071569
PMID: 32231162

16 p, 5.2 MB

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