One-step synthesis of nanograss-free TiO2 nanotubes using DTPA-enriched electrolytes
| Autor: | Fernando Bonatto, Alexandre G. Brolo, Ana Carolina Shuh Frantz, Thais Chiapinotto dos Santos, Carlos Perez Bergmann, Janio Venturini |
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| Rok vydání: | 2018 |
| Předmět: |
Fabrication
Materials science Morphology (linguistics) Anodizing Process Chemistry and Technology One-Step 02 engineering and technology Electrolyte 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Anode Chemical engineering Materials Chemistry Ceramics and Composites Chelation Surface layer 0210 nano-technology |
| Zdroj: | Ceramics International. 44:22345-22351 |
| ISSN: | 0272-8842 |
| DOI: | 10.1016/j.ceramint.2018.08.360 |
| Popis: | A single-step anodic fabrication of TiO2 nanotubes (TNT) without a surface layer of nanograss was attained in electrolytes containing diethylenetriamine-pentaaceticacid (DTPA) as chelating agent. The role of DTPA concentration and anodization voltage on the final TNT morphology was studied. We discuss chemical aspects of the DTPA effect over the surface of TNTs as well as the physical properties of TNT samples prepared under several anodization conditions. We demonstrate that the DTPA concentration has a significant effect on the final surface morphology of TNTs, leading to a surface free of nanograss. Furthermore, we propose a mechanism that explains this phenomenon. |
| Databáze: | OpenAIRE |
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