Photoelectrochemical Properties of NaTaO₃ Microrods Prepared by Anodization

Abstract:

In this work, sodium tantalate (NaTaO₃) microrods were successfully prepared by anodic oxidation of tantalum in 30% NaOH electrolyte. The morphology and structure of microrods were characterized by scanning electronic microscope (SEM), energy dispersive spectrometer (EDS) and X-ray diffraction (XRD), respectively. SEM analysis shows the formation of microrods with an average length of 12.8 μm and a diameter of 2.3 μm. XRD analysis reveals that the as-prepared microrods are amorphous. After annealing in nitrogen at 800 °C, the amorphous NaTaO₃ microrods transform into orthorhombic structure. Experimental results indicate that the microrods have a high photoelectrochemical property. The possible formation mechanism of NaTaO₃ microrods has also been discussed.

• Periodical: Key Engineering Materials (Volumes 602-603)
• Pages: 985-988
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.602-603.985
• Online since: March 2014
• Authors: Xi Xin Wang, Ji Jing Liu, Zhi Qiang Fu, Sheng Ying Yang, Jian Ling Zhao
• Keywords: Anodization, Microrods, NaTaO₃, Tantalum

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