Controlled synthesis of Sm₂O₃ nano/microstructures with new morphology by hydrothermal-calcination process

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• 作者：Lixiong Yin ; Dongdong Zhang ; Dan Wang ; Feifei Wang ; Jianfeng Huang ; ^{huangjfsust@126.com" class="auth_mail" title="E-mail the corresponding author} ; Xingang Kong ; Hao Zhang ; Changqing Liu
• 关键词：Sm2O3 ; Morphology ; Hydrothermal-calcination process ; Optical property
• 刊名：Ceramics International
• 出版年：2016
• 出版时间：1 August 2016
• 年：2016
• 卷：42
• 期：10
• 页码：11998-12004
• 全文大小：3733 K

文摘

Sm₂O₃ nano-microcrystallites with different morphologies were controllably synthesized via a hydrothermal-calcination process. The octahedral, tie-like, dumbbell-like and granular Sm₂O₃ of cubic phase have been obtained by adjusting the reaction conditions such as the Sm³⁺/Na₂CO₃ molar ratio. The products were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), field emission scanning electron microscopy (FE-SEM), high resolution transmission electron microscopy (HR-TEM), and UV–vis diffuse reflectance spectra (UV–vis DRS) for their structures, morphologies, and optical performances. Results show that the morphological control of as-synthesized Sm₂O₃ nano-microstructures is strongly relied on the Sm³⁺/Na₂CO₃ molar ratio of the precursor solution. The characteristics of as-prepared semiconductors are measured by the Mott-Schottky test as well. Furthermore, the samples reveal excellent absorption in deep ultraviolet light, which are supposed to have good prospects in the special optical instruments.