RT journal article
T1 Pursuit of optimal synthetic conditions for obtaining colloidal zero-valent iron nanoparticles by scanning pulsed laser ablation in liquids
A1 Lahoz, Ruth
A1 Natividad, Eva
A1 Mayoral, Álvaro
A1 Rentenberger, Christian
A1 Díaz-Fernández, Daniel
A1 Félix Ruiz, Eduardo José
A1 Soriano, Leonardo
A1 Kautek, Wolfgang
A1 Bomati Miguel, Óscar
A2 Física de la Materia Condensada
K1 Nanoscale zero-valent iron particles
K1 Core-shell structure
K1 Water-stable colloidal metal nanoparticles
K1 Surface functionalization
K1 Liquid-assisted nanosecond pulsed laser ablation
K1 High-resolution transmission electron microscopy
AB Liquid-Assisted Pulsed Laser Ablation (LA-PLA) is a promising top-down method to directly synthesize colloidal dispersions of nanoparticles in a eco-friendly manner. However, the role of LA-PLA synthesis parameters is not yet fully agreed. This work seeks to optimize the production of nanoscale zero-valent iron (nZVI) particles suitable for biomedical or environmental applications using nanosecond LA-PLA on iron targets with different ablation media, laser and target scanning parameters. The use of alcohols as solvents produces iron-iron oxide core-shell nanoparticles with amorphous cores, except for a small crystalline fraction corresponding to the biggest core sizes. Decreasing carbon chain length and complexity leads to a thinning of the carbonaceous material coatings and an increase of the colloidal stability and the nanoparticle productivity. Moreover, a decrease of solvent density and surface tension allows obtaining reduced sizes and polydispersity values. Among, laser and scanning parameters, the pulse accumulation per spot displayed a clear effect in boosting size and productivity. As main outcome, aqueous dispersions with suitable colloidal properties are obtained, either by transferring to water of optimized nZVI particles produced in ethanol, or by direct formation of nZVI particles and in situ coating with hydrophilic molecules in aqueous solutions of these molecules.
PB Elsevier B.V.
SN 1226-086X
YR 2020
FD 2020-01-25
LK http://hdl.handle.net/10498/38293
UL http://hdl.handle.net/10498/38293
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 05-nov-2026