EFFECT OF VOLTAGE ON TiO2 NANOSTRUCTURED BY ELECTROCHEMICAL ANODIZATION
| Autor: | Heiddy P. Quiroz, Anderson Dussan, Francisco Quintero, Pedro J. Arias, Hugo R. Zea |
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| Jazyk: | English<br />Spanish; Castilian |
| Rok vydání: | 2014 |
| Předmět: | |
| Zdroj: | Momento, Vol 0, Iss 49, Pp 36-46 (2014) |
| Druh dokumentu: | article |
| ISSN: | 0121-4470 2500-8013 |
| Popis: | In this work TiO2 nanotubes arrays were obtained by electrochemical anodization method using Ti foil, both anode and cathode, and under different anodization voltages. A mix of water and ethylene glycol as electrolyte was used at environment temperature for several times of reaction. Annealing process to TiO_2 samples were realized at temperature between 273 and 723 K without changes on morphological properties. Rutile and anatase phases were identified by X-ray diffraction measurements in all samples and a change of anatase to rutile phase was observed at biggest annealing temperature (T=723 k). From SEM measurements the inner diameter size for nanotubes were obtained, varying between 37 nm and 41 nm when anodizing voltage was alternant and constant, respectively. Nanotubes with ~6 um of length and 29.56 nm thickness of barrier layer were obtained as influence of the anodizition voltage of 80 V fixed; however nanotubes with bamboo form were observed at alternant voltage of 80 and 20 V during 1 minute and 5 minutes, respectively. A correlation between deposition parameters and morphological properties is presented. |
| Databáze: | Directory of Open Access Journals |
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