Autor segons l'article: Formentin, Pilar; Marsal, Lluis F
Departament: Enginyeria Electrònica, Elèctrica i Automàtica
Autor/s de la URV: Formentín Vallés, Pilar / Marsal Garví, Luis Francisco
Paraules clau: Wettability Perfluoro-silane Oleophilic Macroporous silicon Hydrophobic Contact angle
Resum: © 2021 by the authors. Licensee MDPI, Basel, Switzerland. The effect of the morphology and chemical composition of a surface on the wettability of porous silicon structures is analyzed in the present work. Hydrophobic and superhydrophobic macroporous substrates are attractive for different potential applications. Herein, different hydropho-bic macroporous silicon structures were fabricated by the chemical etching of p-type silicon wafers in a solution based on hydrofluoric acid and coated with a fluoro silane self-assembled monolayer. The surface morphology of the final substrate was characterized using a scanning electron microscope. The wettability was assessed from contact angle measurements using water and organic solvents that present low surface energy. The experimental data were compared with the classical wetting states theoretical models described in the literature. Perfluoro-silane functionalized macroporous silicon surfaces presented systematically higher contact angles than untreated silicon substrates. The influence of porosity on the surface wettability of macoporous silicon structures has been estab-lished. These results suggest that the combination of etching conditions with a surface chemistry modification could lead to hydrophobic/oleophilic or superhydrophobic/oleophobic structures.
Àrees temàtiques: Physics, applied Nanoscience & nanotechnology Materials science, multidisciplinary Materials science (miscellaneous) Materials science (all) General materials science General chemical engineering Engenharias ii Chemistry, multidisciplinary Chemical engineering (miscellaneous) Chemical engineering (all)
Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
Adreça de correu electrònic de l'autor: lluis.marsal@urv.cat pilar.formentin@urv.cat pilar.formentin@urv.cat
Identificador de l'autor: 0000-0002-5976-1408
Data d'alta del registre: 2024-10-12
Versió de l'article dipositat: info:eu-repo/semantics/publishedVersion
Enllaç font original: https://www.mdpi.com/2079-4991/11/3/670
URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
Referència a l'article segons font original: Nanomaterials. 11 (3): 1-11
Referència de l'ítem segons les normes APA: Formentin, Pilar; Marsal, Lluis F (2021). Hydrophobic/oleophilic structures based on macroporous silicon: Effect of topography and fluoroalkyl silane functionalization on wettability. Nanomaterials, 11(3), 1-11. DOI: 10.3390/nano11030670
DOI de l'article: 10.3390/nano11030670
Entitat: Universitat Rovira i Virgili
Any de publicació de la revista: 2021
Tipus de publicació: Journal Publications