CdTe and graphene co-sensitized TiO₂nanotube array photoanodes for protection of 304SS under visible light

Abstract

CdTe/graphene/TiO2 films that served as photoanodes for cathodic protection application were prepared by an electrochemical deposition method. The deposition of graphene and CdTe nanoparticles (NPs) on the surface of the TiO2 nanotubes was confirmed by scanning electron microscope and transmission electron microscopy. The composites exhibited high light absorption in both the UV and visible light region. The results indicated that TiO2 nanotube photoelectrodes sensitized by 20-cycle graphene and 30-cycle CdTe NPs exhibited effective photocathodic protection properties for 304 stainless steel (304SS) under the visible-light illumination, with an photopotential of -750 mV versus saturated calomel electrode and a current density of 560 μA cm(-2). Due to the efficient photogenerated charge separation, the three-component CdTe/graphene/TiO2 showed stronger photoresponse than pure TiO2 under visible-light illumination. In summary, the CdTe/graphene could improve the photocathodic protection properties of TiO2 films.

Ultra-stable self-standing Au nanowires/TiO2nanoporous membrane system for high-performance photoelectrochemical water splitting cells

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Design an Epoxy Coating with TiO2/GO/PANI Nanocomposites for Enhancing Corrosion Resistance of Q235 Carbon Steel

“…Their results show that under visible light irradiation, the ternary composite material has a stronger light response than pure TiO 2 , and its photoelectrochemical performance is significantly enhanced. Li [ 34 ] et al fabricated CdTe/graphene/TiO 2 films by an electrochemical deposition method, where their results show that CdTe/graphene/TiO 2 composite materials exhibit high light absorption in both ultraviolet and visible light regions, and offer a good photocathode protection performance. Although many studies can be found in the literature concerning the use of ternary TiO 2 hybrids as photoanodes for PCP, it generally requires two corrosion cells and photoanode cells connected by wires.…”

Photocathodic Protection of 304 Stainless Steel by Bi2S3/TiO2 Nanotube Films Under Visible Light

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