RT journal article
T1 Reinforced silica-carbon nanotube monolithic aerogels synthesised by rapid controlled gelation
A1 Morales-Florez, Victor
A1 Piñero de los Ríos, Manuel
A1 Mesa Díaz, María del Mar
A1 Santos Martínez, Deseada María de los
A1 Reyes Peces, María Virtudes
A1 Díaz-Fraile, José A.
A1 Rosa Fox, Nicolás Daniel de la
A1 Esquivia, Luis
A1 Morales Flórez, Víctor
A2 Física de la Materia Condensada
A2 Ingeniería Química y Tecnología de Alimentos
K1 Silica hybrid aerogel
K1 Carbon nanotube
K1 Controlled gelation
K1 Structure
K1 Reinforcement
K1 Mechanical properties
AB This work introduces a new synthesis procedure for obtaining homogeneous silica hybrid aerogels with carbon nanotubecontents up to 2.50 wt.%. The inclusion of nanotubes in the highly porous silica matrix was performed by a two-step sol–gelprocess, resulting in samples with densities below 80 mg/cm3. The structural analyses (N2 physisorption and SEM) revealedthe hierarchical structure of the porous matrix formed by nanoparticles arranged in clusters of 100 and 300 nm in size,specific surface areas around 600 m2/g and porous volumes above 4.0 cm3/g. In addition, a relevant increase on themechanical performance was found, and an increment of 50% for the compressive strength and 90% for the maximum deformation were measured by uniaxial compression. This reinforcement was possible thanks to the outstanding dispersion of the CNT within the silica matrix and the formation of Si–O–C bridges between nanotubes and silica matrix, as suggested by FTIR. Therefore, the original synthesis procedure introduced in this work allows the fabrication of highly porous hybrid materials loaded with carbon nanotubes homogeneously distributed in the space, which remain available for a variety oftechnological applications.
PB Springer Nature
SN 0928-0707
YR 2018
FD 2018
LK http://hdl.handle.net/10498/30363
UL http://hdl.handle.net/10498/30363
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 06-nov-2026