RT journal article
T1 Effect of the drying procedure on hybrid sono-aereogels for organic solvent remediation
A1 Reyes Peces, María Virtudes
A1 Amaya Dolores, Beatriz
A1 Morales Flórez, Víctor
A1 Santos Martínez, Deseada María de los
A1 Mesa Díaz, María del Mar
A1 Esquivia, Luis
A1 Rosa Fox, Nicolás Daniel de la
A1 Piñero de los Ríos, Manuel
A2 Física de la Materia Condensada
A2 Ingeniería Química y Tecnología de Alimentos
A2 Química Física
K1 Ambigel
K1 DEDMS-TEOS
K1 Organic solvent remediation
K1 Sono-aerogel
K1 Supercritical CO2
K1 Superhydrophobic
AB Hybrid organic–inorganic aerogels are highly hydrophobic porous solids that avoid the brittleness and moisture adsorption of the standard silica aerogels. Superhydrophobic porous materials have attracted great interest because of their ability for selective absorption of organic solvents while repelling water, as excellent candidates for remediation techniques. This work shows a comparative of three drying procedures of DEDMS/TEOS (diethoxydimethylsilane/tetraethylorthosilicate) gels, namely, by supercritical CO2, by supercritical ethanol, and dried at ambient conditions. Supercritical CO2 and ambient drying produced superhydrophobic aerogels (θ > 150°), while supercritical ethanol drying produces denser aerogels with smaller both porous volume and specific surface area. Regarding the absorption of organic liquids, swelling is observed in all cases. Hexane had faster diffusion that obeyed Fick's law (∝t0.5) whereas liquid polydimethylsiloxane exhibited slower non-Fickian diffusion process (∝tn, n < 0.5)
PB Elsevier
SN 036-63175
YR 2023
FD 2023-03-12
LK http://hdl.handle.net/10498/28929
UL http://hdl.handle.net/10498/28929
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 06-nov-2026