Hydrothermal synthesis of ZnO-Eu₂O₃ binary oxide with straight strips morphology and sensitivity to NO₂ gas

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• 作者：Simona Somacescu ; Adrian Dinescu ; Adelina Stanoiu ; Cristian E. Simion ; Jose Maria Calderon Moreno
• 关键词：Colloidal processing ; Semiconductors ; Microstructure ; Raman and XPS ; Sensors
• 刊名：Materials Letters
• 出版年：2012
• 出版时间：15 December, 2012
• 年：2012
• 卷：89
• 期：Complete
• 页码：219-222
• 全文大小：447 K

文摘

ZnO-x % Eu₂O₃ (x=5 wt. % ) binary oxide with straight strips morphology was successfully synthesized by hydrothermal route, using cetyltrimethylammonium bromide (CTAB) as template ZnSO₄, Eu(NO₃)₃¡¤5H₂O as inorganic precursors and ammonium hydroxide solution 28 % NH₃ for adjusting the pH to 11 value. The morphology, structure, photoluminescence and surface chemistry were investigated. The results highlighted that ZnO-Eu₂O₃ binary oxide shows straight strip morphology and crystalline framework indexed to wurtzite ZnO while Eu₂O₃ was detected as secondary phase. Surface chemistry revealed the presence of Eu³⁺. High sensor signal to 3 ppm NO₂ together with its low sensitivity towards CO recommend this material as a good candidate in selective detection of NO_2.