RT journal article
T1 Anti-fouling nano-Ag/SiO2 ormosil treatments for building materials: The role of cell-surface interactions on toxicity and bioreceptivity
A1 Domínguez, Marcia
A1 Zarzuela Sánchez, Rafael
A1 Moreno-Garrido, Ignacio
A1 Carbú Espinosa de los Monteros, María
A1 Cantoral Fernández, Jesús Manuel
A1 Mosquera Díaz, María Jesús
A1 Gil Montero, María Luisa Almoraima
A2 BiomedicinaBiotecnología y Salud Pública
A2 Química Física
K1 Biointerfaces
K1 Coatings
K1 Biofouling
K1 Hydrophobicity
K1 Biocide
K1 Building materials
AB Protective coatings with hydrophobic or biocide properties are commonly employed to prevent biofouling of building materials exposed to the environment. Although the factors affecting bioreceptivity of the base materials are well known, the influence of the coating and/or biocide agent surface properties on the interaction with the cell surface is often overlooked. As such, a proper understanding of these interfacial interactions can help improve their anti-fouling effectiveness. This work studies a multifunctional superhydrophobic/biocide treatment, containing surface engineered Ag/SiO2 nanoparticles embedded in an organically modified silica matrix, focusing on determining the effect of the cell-nanoparticle interactions and surface properties on its effectiveness against algal fouling. The modification of SiO2 with positively charged groups increased the interaction of the biocide with the cell walls through electrostatic forces, while at the same time it promotes cell aggregation. The hydrophobic matrix decreases initial colonization due to its lower roughness and water absorption, although surface free energy measurements indicated an increase of the cell-surface adhesion force as polarity of the cell wall decreased. A Cassie-Baxter wetting regime on the superhydrophobic surfaces decreased effective contact area and adhesion force, though this state was quickly lost under exposure to the cultures
SN 0300-9440
YR 2021
FD 2021
LK http://hdl.handle.net/10498/33403
UL http://hdl.handle.net/10498/33403
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 07-nov-2026