CORRELATION OF THE SURFACE STRUCTURE OF THE RuO2/Ti AND TiO2 /Ti FILMS WITH ELECTROCHEMICAL IMPEDANCE DATA
The surface structure and nature of the capacitance formation of RuO2/Ti and TiO2 /Ti films are discussed. The factors affecting the reversibility of the adsorption-desorption processes of oxygen on the surface of RuO2/Ti and TiO2 /Ti films are described. The influence of the geometry of the pore, r...
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| Дата: | 2022 |
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| Автори: | , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
V.I.Vernadsky Institute of General and Inorganic Chemistry
2022
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| Онлайн доступ: | https://ucj.org.ua/index.php/journal/article/view/475 |
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| Назва журналу: | Ukrainian Chemistry Journal |
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oai:ojs2.1444248.nisspano.web.hosting-test.net:article-4752022-11-03T13:02:56Z CORRELATION OF THE SURFACE STRUCTURE OF THE RuO2/Ti AND TiO2 /Ti FILMS WITH ELECTROCHEMICAL IMPEDANCE DATA Linyucheva, Olga Pershina, Katherine ruthenium, titanium, surface film, pore geometry, capacitance, sensitivity. The surface structure and nature of the capacitance formation of RuO2/Ti and TiO2 /Ti films are discussed. The factors affecting the reversibility of the adsorption-desorption processes of oxygen on the surface of RuO2/Ti and TiO2 /Ti films are described. The influence of the geometry of the pore, ruthenium content, thickness of the films, and the capacitance value of oxide films was studied using electron microscopy and electrochemical impedance spectroscopy. The changes in pore content and their geometry depending on Ru concentration are fixed by electron microscopy. The changing capacitance and capacitance dispersion in a wide frequency range was used to obtain 3D images of the film's surface. A scheme of the adsorption-absorption ratio changing in relation to the pore’s structure of the films was proposed. The study of the composition, morphological structure and electrochemical behaviour of RuO2/Ti and TiO2 /Ti films determined the impact of the pore shape of surface films on the adsorption-absorption ratio of oxygen, which regulated technical data of sensors. By changing the capacitance and capacitance dispersion in a wide frequency range, it was proposed to obtain 3D images of the surface. It was found that decrease of DEL capacitance has following relationships: large V-shaped pores on the boundary of titanium base and oxide film and on the surface of film > small V-shaped pores on the boundary of titanium base and oxide film, and large pores on the surface of film > rectangular-shaped pores on the boundary of titanium base and oxide film and small V-shaped pores on the surface of film. The formation of the pore geometry and surface structure is dependent on the ration of ruthenium and the thickness of films. So, it is possible to change the morphological and electrochemical properties of sensors by the regulation of ruthenium content. V.I.Vernadsky Institute of General and Inorganic Chemistry 2022-09-26 Article Article Physical chemistry Физическая xимия Фізична xімія application/pdf https://ucj.org.ua/index.php/journal/article/view/475 10.33609/2708-129X.88.08.2022.97-105 Ukrainian Chemistry Journal; Vol 88 No 8 (2022): Ukrainian Chemistry Journal; 97-105 Украинский химический журнал; Том 88 № 8 (2022): Ukrainian Chemistry Journal; 97-105 Український хімічний журнал; Том 88 № 8 (2022): Український хімічний журнал; 97-105 2708-129X 2708-1281 en https://ucj.org.ua/index.php/journal/article/view/475/244 |
| institution |
Ukrainian Chemistry Journal |
| baseUrl_str |
|
| datestamp_date |
2022-11-03T13:02:56Z |
| collection |
OJS |
| language |
English |
| topic_facet |
ruthenium titanium surface film pore geometry capacitance sensitivity. |
| format |
Article |
| author |
Linyucheva, Olga Pershina, Katherine |
| spellingShingle |
Linyucheva, Olga Pershina, Katherine CORRELATION OF THE SURFACE STRUCTURE OF THE RuO2/Ti AND TiO2 /Ti FILMS WITH ELECTROCHEMICAL IMPEDANCE DATA |
| author_facet |
Linyucheva, Olga Pershina, Katherine |
| author_sort |
Linyucheva, Olga |
| title |
CORRELATION OF THE SURFACE STRUCTURE OF THE RuO2/Ti AND TiO2 /Ti FILMS WITH ELECTROCHEMICAL IMPEDANCE DATA |
| title_short |
CORRELATION OF THE SURFACE STRUCTURE OF THE RuO2/Ti AND TiO2 /Ti FILMS WITH ELECTROCHEMICAL IMPEDANCE DATA |
| title_full |
CORRELATION OF THE SURFACE STRUCTURE OF THE RuO2/Ti AND TiO2 /Ti FILMS WITH ELECTROCHEMICAL IMPEDANCE DATA |
| title_fullStr |
CORRELATION OF THE SURFACE STRUCTURE OF THE RuO2/Ti AND TiO2 /Ti FILMS WITH ELECTROCHEMICAL IMPEDANCE DATA |
| title_full_unstemmed |
CORRELATION OF THE SURFACE STRUCTURE OF THE RuO2/Ti AND TiO2 /Ti FILMS WITH ELECTROCHEMICAL IMPEDANCE DATA |
| title_sort |
correlation of the surface structure of the ruo2/ti and tio2 /ti films with electrochemical impedance data |
| description |
The surface structure and nature of the capacitance formation of RuO2/Ti and TiO2 /Ti films are discussed. The factors affecting the reversibility of the adsorption-desorption processes of oxygen on the surface of RuO2/Ti and TiO2 /Ti films are described. The influence of the geometry of the pore, ruthenium content, thickness of the films, and the capacitance value of oxide films was studied using electron microscopy and electrochemical impedance spectroscopy. The changes in pore content and their geometry depending on Ru concentration are fixed by electron microscopy. The changing capacitance and capacitance dispersion in a wide frequency range was used to obtain 3D images of the film's surface. A scheme of the adsorption-absorption ratio changing in relation to the pore’s structure of the films was proposed. The study of the composition, morphological structure and electrochemical behaviour of RuO2/Ti and TiO2 /Ti films determined the impact of the pore shape of surface films on the adsorption-absorption ratio of oxygen, which regulated technical data of sensors. By changing the capacitance and capacitance dispersion in a wide frequency range, it was proposed to obtain 3D images of the surface. It was found that decrease of DEL capacitance has following relationships: large V-shaped pores on the boundary of titanium base and oxide film and on the surface of film > small V-shaped pores on the boundary of titanium base and oxide film, and large pores on the surface of film > rectangular-shaped pores on the boundary of titanium base and oxide film and small V-shaped pores on the surface of film. The formation of the pore geometry and surface structure is dependent on the ration of ruthenium and the thickness of films. So, it is possible to change the morphological and electrochemical properties of sensors by the regulation of ruthenium content. |
| publisher |
V.I.Vernadsky Institute of General and Inorganic Chemistry |
| publishDate |
2022 |
| url |
https://ucj.org.ua/index.php/journal/article/view/475 |
| work_keys_str_mv |
AT linyuchevaolga correlationofthesurfacestructureoftheruo2tiandtio2tifilmswithelectrochemicalimpedancedata AT pershinakatherine correlationofthesurfacestructureoftheruo2tiandtio2tifilmswithelectrochemicalimpedancedata |
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2025-09-24T17:43:46Z |
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2025-09-24T17:43:46Z |
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