Tunability of hybrid silica xerogels: surface chemistry and porous texture based on the aromatic precursor
Fecha
2023Autor
Versión
Acceso abierto / Sarbide irekia
Tipo
Artículo / Artikulua
Versión
Versión publicada / Argitaratu den bertsioa
Identificador del proyecto
Impacto
|
10.3390/gels9050382
Resumen
The interest in new materials with specific properties has increased because they are essential for the environmental and technological needs of our society. Among them, silica hybrid
xerogels have emerged as promising candidates due to their simple preparation and tunability: when
they are synthesised, depending on the organic precursor and its concentration, their properties
can be modulated ...
[++]
The interest in new materials with specific properties has increased because they are essential for the environmental and technological needs of our society. Among them, silica hybrid
xerogels have emerged as promising candidates due to their simple preparation and tunability: when
they are synthesised, depending on the organic precursor and its concentration, their properties
can be modulated, and thus, it is possible to prepare materials with à la carte porosity and surface
chemistry. This research aims to design two new series of silica hybrid xerogels by co-condensation of
tetraethoxysilane (TEOS) with triethoxy(p-tolyl)silane (MPhTEOS) or 1,4-bis(triethoxysilyl)benzene
(Ph(TEOS)2 and to determine their chemical and textural properties based on a variety of characterisation techniques (FT-IR, 29Si NMR, X-ray diffraction and N2
, CO2 and water vapour adsorption,
among others). The information gathered from these techniques reveals that depending on the
organic precursor and its molar percentage, materials with different porosity, hydrophilicity and local
order are obtained, evidencing the easy modulation of their properties. The ultimate goal of this
study is to prepare materials suitable for a variety of applications, such as adsorbents for pollutants,
catalysts, films for solar cells or coatings for optic fibre sensors. [--]
Materias
Xerogels,
ORMOSILs,
Hybrid materials,
Tetraethoxysilane,
Surface chemistry,
Porous texture
Editor
MDPI
Publicado en
Gels, 2023, 9, 382
Departamento
Universidad Pública de Navarra. Departamento de Ciencias /
Nafarroako Unibertsitate Publikoa. Zientziak Saila /
Universidad Pública de Navarra/Nafarroako Unibertsitate Publikoa. Institute for Advanced Materials and Mathematics - INAMAT2
Versión del editor
Entidades Financiadoras
The authors gratefully acknowledge the financial support received from the “Ministerio de Ciencia e Innovación” from Spain (PID2020-113558RB-C42), and from the Public University of Navarre, with the project “Impulso de la creatividad y la innovación a través de proyectos en bachiller de investigación”. G.C.-Q. is thankful to the “Ministerio de Universidades” of the Spanish government for the “Formación de Profesorado Universitario (FPU)” grant (FPU18/03467). M.V.L.-R. acknowledges the financial support from the FEDER 2014-2020 Operative Program and the “Junta de Andalucía”, Spain (Projects FEDER-UJA-1380629), and M.E.-V. is thankful to the Public University of Navarre for the project “Jóvenes Investigadores UPNA 2022” (PJUPNA18-2022).