RT Journal Article
T1 Selective growth of ZnO micro- and nano-structures on fs-laser processed metallic Zn substrates for large area applications
A1 Ariza, R.
A1 Urbieta Quiroga, Ana Irene
A1 Ferreiro, A.
A1 Rabanal, M.E.
A1 Fernández Sánchez, Paloma
A1 Solis, J.
AB The synthesis of large area micro- and nano-structured ZnO surfaces has been successfully achieved through a two-step process. It involves the irradiation of Zn metal sheets with femtosecond laser pulses (350 fs at 1030 nm) at high repetition rates (100–500 kHz), and fast scanning speeds (cm/s). Subsequently, the irradiated sheets are thermally treated in an Argon flux at 380 ◦C, a temperature significantly lower than that typically required for growing micro- and nanostructures in ZnO. Fs-laser irradiation promotes the initial development of topography and the localized oxidation of the metal. This enables the further growth of micro- and nanostructures at preferential sites with good crystalline quality and luminescent properties. Analysis of the material at different processing steps shows that the initial laser-induced oxidation is crucial in defining ZnO growth mechanisms upon thermal treatment, and determining the final properties. We have tested the potential use of these structures as reusable photocalyst. The ease of catalyst recovery in photocatalysis experiments and the degree of degradation achieved may be considered as key performance indicators. Photocatalytic activity tests performed with a Rhodamine B solution showed degradation values up to 43 % over 90 min. The morphology of the simples remains unaltered after photocatalysis experiments.
PB Elsevier
SN 0925-8388
YR 2025
FD 2025-01
LK https://hdl.handle.net/20.500.14352/122615
UL https://hdl.handle.net/20.500.14352/122615
LA eng
NO R. Ariza, A. Urbieta, A. Ferreiro, M.E. Rabanal, P. Fernández, J. Solis, Selective growth of ZnO micro- and nano-structures on fs-laser processed metallic Zn substrates for large area applications, Journal of Alloys and Compounds 1010 (2025) 177797.
NO MSCA-101149132
NO Ministerio de Ciencia e Innovación (España)
NO Agencia Estatal de Investigación (España)
NO European Commission
NO Universidad Complutense de Madrid
NO Comunidad de Madrid
DS Docta Complutense
RD 20 jul 2025