Research into corrosion and electrocatalytic properties of the modified oxide films on tin
| Autor: | Anna Cheremysinova, Irina Sknar, Victor Vargalyuk, Kateryna Plyasovskaya, Ann Karakurkchi, Oleksii Sigunov |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Inorganic chemistry електрокаталітична активність Oxide Energy Engineering and Power Technology chemistry.chemical_element Oxygen Industrial and Manufacturing Engineering модифіковані оксидні плівки Catalysis Corrosion chemistry.chemical_compound Management of Technology and Innovation Electrical and Electronic Engineering Applied Mathematics Mechanical Engineering Computer Science Applications Anode Titanium oxide chemistry Control and Systems Engineering олово оксидні сполуки титана корозійна стійкість Tin Titanium |
| Zdroj: | Eastern-European Journal of Enterprise Technologies. 5:39-44 |
| ISSN: | 1729-4061 1729-3774 |
| DOI: | 10.15587/1729-4061.2017.109710 |
| Popis: | Oxide films on tin, modified by titanium compounds, are nontoxic and serve as anticorrosion protection, material for gas sensors, photo and electrocatalysts. We investigated the process of anodic tin treatment in the presence of potassium metatitanate. It is shown that the twostage technique for the formation of an oxide film at the electrode potentials of − 0.3 V and 3.0 V makes it possible to substantially increase the content of titanium oxide compounds in the oxide mixture. The content of Ti(IV) reaches values of 14 − 15 % (mol). Films with a maximum content of titanium compounds and the largest corrosion resistance are formed at a concentration of potassium metatitanate above 1·10 –3 mol/l. The time of selfactivation of such films is 10 times longer than that of the unmodified films. We explored catalytic properties of the obtained films with mixed composition SnО х (TiО у ). It is shown that an increase in the content of titanium oxide compounds in the film contributes to the acceleration of anodic oxidation of MTBE. It was established that this process takes place directly on the surface of the oxide film rather than during interaction with oxygen formed on the anode. The modified oxide films SnО х (TiО у ) on tin with maximal corrosion resistance and electrocatalytic activity are formed from the solutions that contain 0.5M KOH. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|