Hierarchically Structured Ti-TiO₂ Membranes Fabricated by Femtosecond Laser Ablation and Atomic Layer Deposition for Enhanced Photoelectrochemical Water Splitting.

ABSTRACT: Efficient and scalable photoelectrodes are essential for advancing solar-driven hydrogen production via photoelectrochemical (PEC) water splitting. This work presents a novel binder-free Ti-TiO₂ membrane photoanode engineered by the synergy of femtosecond laser ablation and atomic layer deposition (ALD). Laser processing produced a highly ordered array of micro pyramids on titanium foil, significantly increasing the surface area and light-trapping capability. Subsequent ALD of TiO₂ (10 and 100 nm) yielded conformal coatings with tunable crystallinity. Among the tested configurations, the 100 nm TiO₂ layer showed superior performance, attributed to its enhanced crystallinity, optical absorption, and charge transport properties. The optimized membrane achieve

SUBMITTER: Lys A 

PROVIDER: S-EPMC12314867 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature