Synthesis, Characterization and Electrochemical Sensing of Tb₂O₃ Nanotubes

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• 作者：N. Sabari Arul ; J. Vidya ; V. Ramya ; D. Mangalaraj
• 关键词：Tb2O3 nanotubes ; precipitation ; structural ; electrochemical sensing ; H2O2
• 刊名：Journal of Electronic Materials
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：46
• 期：2
• 页码：1072-1078
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Optical and Electronic Materials; Characterization and Evaluation of Materials; Electronics and Microelectronics, Instrumentation; Solid State Physics;
• 出版者：Springer US
• ISSN：1543-186X
• 卷排序：46

文摘

One dimensional terbium oxide (Tb₂O₃) nanotubes have been synthesized by using surfactant free precipitation method and investigated its non-enzymatic electrochemical detection for hydrogen peroxide (H₂O₂). The structural analysis and x-ray diffraction data confirmed the formation of cubic phase Tb₂O₃ in the synthesized Tb₂O₃ nanotubes. The optical property of the synthesized product was investigated by ultraviolet spectroscopy and photoluminescence (PL) studies. The PL spectrum of Tb₂O₃ nanotubes exhibited a strong green luminescence corresponding to 5D₄ → ^{7F₅ transition of Tb3+ ions. The non-enzymatic hydrogen peroxide (H₂O₂) sensing of Tb₂O₃ nanotubes/carbon paper modified electrodes in 1 M KCl electrolyte was carried out using cyclic voltammetry and amperometric (i–t) analysis. The enhanced electrocatalytic behavior was observed for Tb₂O₃ nanotubes with an excellent sensitivity of 875 μA mM−1 cm−2, linear ranges of 0.5–5 mM and a low detection limit of 5 μM.}