Synthesis, Characterization, Photo/Electrocatalytic Activity, and Corrosion Behavior of Ag2S/PANI Composite Layered TiO2 Nanotubes Coated on Ti Foil
Abstract In this study, the photo/electrocatalytic and electrochemical properties of the composite structure formed by coating silver sulfide (Ag2S) and polyaniline (PANI) on titanium nanotubes are investigated. Titanium nanotubes (TiO2 NTs) are synthesized on the surface of titanium (Ti) sheets usi...
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Wiley
2025-06-01
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| Series: | Global Challenges |
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| Online Access: | https://doi.org/10.1002/gch2.202500011 |
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| author | Derya Birhan Derya Tekin Burak Dikici Taner Tekin Hakan Kızıltaş |
| author_facet | Derya Birhan Derya Tekin Burak Dikici Taner Tekin Hakan Kızıltaş |
| author_sort | Derya Birhan |
| collection | DOAJ |
| description | Abstract In this study, the photo/electrocatalytic and electrochemical properties of the composite structure formed by coating silver sulfide (Ag2S) and polyaniline (PANI) on titanium nanotubes are investigated. Titanium nanotubes (TiO2 NTs) are synthesized on the surface of titanium (Ti) sheets using the anodization method. Ag2S is deposited on the surface of TiO2 NTs through the successive ionic layer adsorption and reaction (SILAR) method, while PANI is coated via the chemical oxidative polymerization technique. SEM‐EDS, XRD, FTIR, and electrochemical measurements are used to characterize the prepared nanotubes. The corrosion inhibitor performance of TiO2 NTs is investigated by electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization (PDS) measurements. EIS measurements showed that the PANI layer decreased the resistance of the photoanodes, while the Ag2S coating increased the resistance compared to PANI. It is determined that the semicircles in the Nyquist curves drawn using EIS measurements are formed due to the Warburg resistance in the low‐frequency region and the high‐frequency region caused by the charge transfer resistance. Corrosion parameters are measured using Tafel fitting curves. Overall, TiO2 NTs grown by anodization effectively prevented the corrosion of the Ti photoelectrode, and the corrosion rate is calculated at 0.013 mm/year (mpy). In electrocatalytic (EC), photocatalytic (PC), and photoelectrocatalytic (PEC) activity experiments, PANI/Ag2S/TiO2 NT photoelectrode removed 13.775%, 37.71%, and 61.075% of methylene blue (MB) within 120 min under UV light irradiation. |
| format | Article |
| id | doaj-art-d2160a062b87474b8bdc7c71ec094b92 |
| institution | Kabale University |
| issn | 2056-6646 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Wiley |
| record_format | Article |
| series | Global Challenges |
| spelling | doaj-art-d2160a062b87474b8bdc7c71ec094b922025-08-20T03:46:21ZengWileyGlobal Challenges2056-66462025-06-0196n/an/a10.1002/gch2.202500011Synthesis, Characterization, Photo/Electrocatalytic Activity, and Corrosion Behavior of Ag2S/PANI Composite Layered TiO2 Nanotubes Coated on Ti FoilDerya Birhan0Derya Tekin1Burak Dikici2Taner Tekin3Hakan Kızıltaş4Department of Metallurgy and Materials Engineering Ataturk University Erzurum 25240 TurkeyDepartment of Metallurgy and Materials Engineering Ataturk University Erzurum 25240 TurkeyDepartment of Mechanical Engineering Ataturk University Erzurum 25240 TürkiyeDepartment of Chemical Engineering Ataturk University Erzurum 25240 TurkeyDepartment of Chemical Engineering Ataturk University Erzurum 25240 TurkeyAbstract In this study, the photo/electrocatalytic and electrochemical properties of the composite structure formed by coating silver sulfide (Ag2S) and polyaniline (PANI) on titanium nanotubes are investigated. Titanium nanotubes (TiO2 NTs) are synthesized on the surface of titanium (Ti) sheets using the anodization method. Ag2S is deposited on the surface of TiO2 NTs through the successive ionic layer adsorption and reaction (SILAR) method, while PANI is coated via the chemical oxidative polymerization technique. SEM‐EDS, XRD, FTIR, and electrochemical measurements are used to characterize the prepared nanotubes. The corrosion inhibitor performance of TiO2 NTs is investigated by electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization (PDS) measurements. EIS measurements showed that the PANI layer decreased the resistance of the photoanodes, while the Ag2S coating increased the resistance compared to PANI. It is determined that the semicircles in the Nyquist curves drawn using EIS measurements are formed due to the Warburg resistance in the low‐frequency region and the high‐frequency region caused by the charge transfer resistance. Corrosion parameters are measured using Tafel fitting curves. Overall, TiO2 NTs grown by anodization effectively prevented the corrosion of the Ti photoelectrode, and the corrosion rate is calculated at 0.013 mm/year (mpy). In electrocatalytic (EC), photocatalytic (PC), and photoelectrocatalytic (PEC) activity experiments, PANI/Ag2S/TiO2 NT photoelectrode removed 13.775%, 37.71%, and 61.075% of methylene blue (MB) within 120 min under UV light irradiation.https://doi.org/10.1002/gch2.202500011Ag2S NPsanodizationconductive polymerscorrosionphoto/electrocatalyticTiO2 nanotube |
| spellingShingle | Derya Birhan Derya Tekin Burak Dikici Taner Tekin Hakan Kızıltaş Synthesis, Characterization, Photo/Electrocatalytic Activity, and Corrosion Behavior of Ag2S/PANI Composite Layered TiO2 Nanotubes Coated on Ti Foil Global Challenges Ag2S NPs anodization conductive polymers corrosion photo/electrocatalytic TiO2 nanotube |
| title | Synthesis, Characterization, Photo/Electrocatalytic Activity, and Corrosion Behavior of Ag2S/PANI Composite Layered TiO2 Nanotubes Coated on Ti Foil |
| title_full | Synthesis, Characterization, Photo/Electrocatalytic Activity, and Corrosion Behavior of Ag2S/PANI Composite Layered TiO2 Nanotubes Coated on Ti Foil |
| title_fullStr | Synthesis, Characterization, Photo/Electrocatalytic Activity, and Corrosion Behavior of Ag2S/PANI Composite Layered TiO2 Nanotubes Coated on Ti Foil |
| title_full_unstemmed | Synthesis, Characterization, Photo/Electrocatalytic Activity, and Corrosion Behavior of Ag2S/PANI Composite Layered TiO2 Nanotubes Coated on Ti Foil |
| title_short | Synthesis, Characterization, Photo/Electrocatalytic Activity, and Corrosion Behavior of Ag2S/PANI Composite Layered TiO2 Nanotubes Coated on Ti Foil |
| title_sort | synthesis characterization photo electrocatalytic activity and corrosion behavior of ag2s pani composite layered tio2 nanotubes coated on ti foil |
| topic | Ag2S NPs anodization conductive polymers corrosion photo/electrocatalytic TiO2 nanotube |
| url | https://doi.org/10.1002/gch2.202500011 |
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