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Ruthenium Oxide Nanotubes Via Template Electrosynthesis

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Abstract:

Ruthenium oxide nanotubes were fabricated by a single-step galvanostatic deposition using porous anodic alumina membrane as template. For the electrodeposition process, we used a electrochemical cell specifically designed in order to employ only 0.5 ml of 0.02 M RuCl3•xH2O solution. The deposition from a very small volume was specifically addressed owing to the high cost of ruthenium compounds, which could be of some relevance from an applicative point of view. Several techniques were used to characterize the samples prior to and after thermal treatment, which was carried out at different temperatures in order to study the crystallization process of the deposit. Raman spectroscopy of as-deposited nanotubes revealed the presence of RuO2 vibrating modes, while XRD patterns did not show RuO2 peaks, consequently the formation of a subnano-crystalline structure was proposed. After thermal treatment at different temperature above 600°C, they crystallized in the tetragonal form of RuO2. Both XRD analysis and Raman spectroscopy revealed that crystal size of the deposit grew with temperature up to 1000°C. SEM investigations showed the formation of nanotubes having an uniform average external diameter, while wall thickness changed throughout the height.





Keywords: Anodic alumina membrane; electrodeposition; metal oxide; nanotubes; raman spectroscopy; ruthenium oxide; supercapacitors; template fabrication

Document Type: Research Article

DOI: https://doi.org/10.2174/157341311794653622

Publication date: 2011-04-01

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  • Current Nanoscience publishes authoritative reviews and original research reports, written by experts in the field on all the most recent advances in nanoscience and nanotechnology. All aspects of the field are represented including nano- structures, synthesis, properties, assembly and devices. Applications of nanoscience in biotechnology, medicine, pharmaceuticals, physics, material science and electronics are also covered. The journal is essential to all involved in nanoscience and its applied areas.
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