Title Nanosecond laser-fabricated titanium meshes and their chemical modification for photocatalytic and SERS applications
Authors Krzemiński, Piotr ; Lazauskas, Algirdas ; Meskinis, Sarunas ; Wojnarowska-Nowak, Renata ; Cieniek, Bogumił ; Kisała, Joanna
DOI 10.3390/app152111579
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Is Part of Applied sciences.. Basel : MDPI. 2025, vol. 15, iss. 21, art. no. 11579, p. 1-16.. ISSN 2076-3417
Keywords [eng] titanium mesh ; nanosecond laser fabrication ; photocatalysis ; silver nanoparticles ; surface modification
Abstract [eng] This study presents the fabrication and chemical modification of titanium meshes produced by nanosecond laser drilling, tailored for advanced photocatalytic and surface-enhanced Raman scattering (SERS) applications. Titanium meshes were fabricated via pulsed laser ablation (TM_1) and subsequently modified either by deposition of silver nanoparticles through irradiation (TM_2) and sonication (TM_3) or by surface oxidation using hydrogen peroxide (TM_4). Morphological and compositional analyses revealed that these modifications lead to distinct Ag nanoparticle morphologies and significant increases in surface oxygen content, notably enhancing photocatalytic performance. Photocatalytic tests demonstrated that the TM_4 mesh achieved the highest degradation rate of methylene blue, underscoring the critical role of surface oxygen enrichment. In contrast, TM_2 and TM_3 exhibit strong potential as surface-enhanced Raman scattering (SERS) substrates due to the well-distributed plasmonic silver nanostructures that enhance local electromagnetic fields. Their three-dimensional porous architecture facilitates high surface area and efficient analyte adsorption (MB), further improving SERS sensitivity. These findings establish nanosecond laser-processed titanium meshes, particularly those that are chemically modified, as promising, scalable materials for efficient water purification and effective SERS substrates for molecular sensing.
Published Basel : MDPI
Type Journal article
Language English
Publication date 2025
CC license CC license description