Multilayered ZnO/TiO₂nanostructures as efficient corrosion protection for stainless steel 304

TiO2/Cu2O/CuO Multi-Nanolayers as Sensors for H2 and Volatile Organic Compounds: An Experimental and Theoretical Investigation

“…The hydrogen and ethanol responses of the samples consisting of the TiO 2 /Cu 2 O/CuO multi-nanolayered films with different thicknesses were studied to determine the impact of adding TiO 2 to the top layer. The ternary heterojunction can also act either as a self-cleaning surface or to enhance the gas detection and improve the protection against corrosion at high temperatures. − ,, …”

“…These results provide evidence that the deposited thin TiO2 film protects the sensor, increasing its lifespan. Thus, the titania (TiO2) ultra-thin layers deposited on top of Cu2O/CuO using spray pyrolysis method can be used for long-term stabilization of functionalities of sensors to provide protection against corrosion at high temperatures [27][28][29][30]55,56 Cite this paper as : O. NATO Science for Peace and Security Programme (SPS) within the grant G5634 "Advanced Electro-Optical Chemical Sensors" AMOXES.…”

“…Inorganic ultraviolet (UV) absorbers such as titania (TiO 2 ), ZnO, and CeO 2 are generally employed in shielding applications for the UV protection of different surfaces, , where effective physical nanocoating barriers are needed for high-temperature applications . Titania (TiO 2 ) nanocoatings are used extensively to increase the surface hardness and adhesive strength, provide long-term and high-temperature protection against corrosion, enhance tribological properties, and improve the design of the transparent coatings for self-cleaning surfaces. − …”

Research progress of TiO2 photocathodic protection to metals in marine environment

“…The OCP of 304SS coupled with the ZnO/TiO 2 fi lm was up to -730 mV (vs. SCE) in 3 wt.% NaCl at an annealing temperature of 500°C, and the absorption of the composite fi lm redshifted. Multilayered ZnO/TiO 2 coatings exhibited anticorrosion performance on 304SS (Boukerche et al, 2019). However, ZnO has a wide energy gap of 3.37 eV, which still needs to be ameliorated in the synthesis and structure.…”

“…When testing the protection of ZnO and TiO 2 layers on 304SS, Boukerche et al (2019) found through optical microscopy that ZnO and TiO 2 fi lms with diff erent proportions had diff erent colors, which provided the ability to discern the features of fi lms. Li and Fu (2013) observed the morphology after accelerated corrosion tests, which were conducted for 316L stainless steel substrates with chromium-doped TiO 2 coatings, and found that the photocathodic protection was increased by using chromium doping.…”