Heterogeneity in optimized solid-state synthesis of metavanadate AVO₃ (A = Rb, Cs)

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• 作者：Guangyao Sun ; Wenjing Li ; Shidong Ji ; Xun Cao…
• 关键词：AVO3 ; Heterogeneity ; Methanol ; Optimized solid ; state synthesis ; Oriented growth ; Defect
• 刊名：Research on Chemical Intermediates
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：43
• 期：1
• 页码：341-352
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Catalysis; Physical Chemistry; Inorganic Chemistry;
• 出版者：Springer Netherlands
• ISSN：1568-5675
• 卷排序：43

文摘

Methanol was used to optimize the solid-state synthesizing method of alkali metavanadates AVO₃ (A = Rb, Cs) for the first time and the benefits are discussed. Due to the optimization, four kinds of heterogeneous AVO₃ compounds, white CsVO₃ [CsVO₃ (W)], yellow CsVO₃ [CsVO₃ (Y)], white RbVO₃ [RbVO₃ (W)], and red RbVO₃ [RbVO₃ (R)], could be easily obtained. The colored compounds CsVO₃ (Y) and RbVO₃ (R) are reported for the first time and their synthetic process has been summarized, while their crystal structure, morphology, vibration spectroscopy, photoluminescence, moisture adsorption and thermodynamic properties were measured and compared to white compounds. The differences in properties of CsVO₃ (Y) and RbVO₃ (R) were hypothesized as the oriented growth and induced defects. All four AVO₃ compounds were excellent white-light-emitting phosphors, and CsVO₃ (Y) and RbVO₃ (R), with additional waterproofness, suggested much more practical value.