RT Generic
T1 Data: Evaluating the energy consumption, structural, and corrosion resistance properties of photocatalytic TiO2-based PEO coatings on pre-anodized AA2024-Al
A1 Ahsan Iqbal, Muhammad
A1 Asghar, Humaira
A1 Maurino, Valter
A1 Matykina, Endzhe
A1 Arrabal Durán, Raúl
A1 Mohedano Sánchez, Marta
AB In this work, a thorough investigation is carried out to develop plasma electrolytic oxidation (PEO) coatings on pre-anodized AA2024-Al at various concentrations of TiO2 dispersed in a water base electrolyte of sodium silicate, sodium phosphate dodecahydrate, and potassium hydroxide in order to determine the effect of TiO2 incorporation on energy consumption, coating growth, surface morphology, photocatalytic behavior, and associated long-term corrosion resistance properties. The pre-anodization time is controlled to develop a 20.0 ± 1.6 µm thick anodic film, where a reduction of ∼66 % in the energy consumption (kW h m2 µm−1) is observed compared to the PEO developed without pre-anodic precursors, while the addition of TiO2 nanoparticles (Degusa-P25) into the base electrolyte results in reductions of ∼68 %, 64 %, and 51 % for the PEO coatings developed at 2, 5 and 10 g/L TiO2-based electrolyte, respectively. TiO2-based PEO process is found to improve growth rate, coating microstructure with lower porosity and defects, and reduce energy consumption (for a coating of a given thickness). The photocatalytic activity of TiO2 was investigated by photodegrading phenol under simulated sunlight conditions, where the higher concentration of TiO2 nanoparticles affected the phenol photodegradation efficiency, whereas the effectiveness of TiO2 concentration on the corrosion resistance properties of PEO coatings was observed with nearly one-order higher impedance magnitude (after 336 h) than the PEO layer without TiO2.
PB Elsevier
YR 2024
FD 2024
LK https://hdl.handle.net/20.500.14352/124428
UL https://hdl.handle.net/20.500.14352/124428
LA eng
NO This work is financed by the European project UNA4CAREER (Marie Skłodowska Curie grant No 847635). The authors also gratefully acknowledge the support of PID2021–124341OB-C22 (MCIU/AEI/FEDER, UE). M. Mohedano is grateful for the support of RYC-2017–21843.
NO Ministerio de Ciencia, Innovación y Universidades (España)
NO UE
DS Docta Complutense
RD 9 nov 2025