Fabrication and Significant Photoelectrochemical Activity of Titania Nanotubes Modified with Thin Indium Tin Oxide Film
来源期刊：Acta Metallurgica Sinica2017年第12期
论文作者：Katarzyna Siuzdak Mariusz Szkoda Jakub Karczewski Jacek Ryl Kazimierz Darowicki Katarzyna Grochowska
文章页码：1210 - 1220
摘 要：Ordered titanium dioxide nanotubes（Ti O2NTs）modified with indium tin oxide（ITO）films were obtained via magnetron sputtering,in which ITO plate was used as a target,onto the as-anodized titania support followed by the calcination process.The morphology of fabricated material with deposited oxide was investigated using scanning electron microscopy.Raman and UV–Vis spectroscopies were utilized to characterize crystalline phase and optical properties of prepared samples,whereas X-ray photoelectron spectroscopy allowed determining the binding energy of present elements.In the case of titanium,three various oxidation states were identified and also the presence of indium and tin was confirmed.The electrochemical test carried out when the sample was exposed to light allows for selection of the most photoactive material.The highest photocurrent was registered when only 5-nm ITO layer was sputtered,and it equals 256and 133 l A cm-2for the electrode material immersed in 0.5 M KOH and K2SO4electrolytes,respectively,that is accordingly 3.5 and 4.4 times higher than the one observed for pristine titania.Furthermore,ITO-modified titania exhibits excellent photostability upon prolonged illumination that is of key importance for possible application in light-driven processes.
Katarzyna Siuzdak1，Mariusz Szkoda2，Jakub Karczewski3，Jacek Ryl4，Kazimierz Darowicki4，Katarzyna Grochowska1
1. Centre for Plasma and Laser Engineering,The Szewalski Institute of Fluid-Flow Machinery,Polish Academy of Sciences2. Department of Chemistry and Technology of Functional Materials,Chemical Faculty,Gdańsk University of Technology3. Faculty of Applied Physics and Mathematics,Gdansk University of Technology4. Department of Electrochemistry,Corrosion and Materials Engineering,Gdańsk University of Technology
摘 要：Ordered titanium dioxide nanotubes（Ti O2NTs）modified with indium tin oxide（ITO）films were obtained via magnetron sputtering,in which ITO plate was used as a target,onto the as-anodized titania support followed by the calcination process.The morphology of fabricated material with deposited oxide was investigated using scanning electron microscopy.Raman and UV–Vis spectroscopies were utilized to characterize crystalline phase and optical properties of prepared samples,whereas X-ray photoelectron spectroscopy allowed determining the binding energy of present elements.In the case of titanium,three various oxidation states were identified and also the presence of indium and tin was confirmed.The electrochemical test carried out when the sample was exposed to light allows for selection of the most photoactive material.The highest photocurrent was registered when only 5-nm ITO layer was sputtered,and it equals 256and 133 l A cm-2for the electrode material immersed in 0.5 M KOH and K2SO4electrolytes,respectively,that is accordingly 3.5 and 4.4 times higher than the one observed for pristine titania.Furthermore,ITO-modified titania exhibits excellent photostability upon prolonged illumination that is of key importance for possible application in light-driven processes.
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