Synthesis and characterization of triangular-pyramidal bismuth oxide via a one-step chemical precipitation route

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• 作者：Maohua Wang 王茂华 ; Wen Jiang 江雯 ; Xiaoyu Ma
• 关键词：Key wordsone ; step synthesis route ; crystal structure ; self ; assembly
• 刊名：Journal of Wuhan University of Technology-Mater. Sci. Ed.
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：32
• 期：1
• 页码：16-18
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Materials Science, general;
• 出版者：Wuhan University of Technology
• ISSN：1993-0437
• 卷排序：32

文摘

Triangular-pyramidal ω-Bi₂O₃ is successfully synthesized via a one-step wet-chemical method. XRD, SEM, and UV-vis have been employed to characterize the as-prepared samples. Structural characterization by XRD confirms the formation of triclinic ω-Bi₂O₃ with high purity. The well-defined flower-like Bi₂O₃ structures consisted of many triangular-pyramids are formed. Preparative parameters, such as concentration of PEG 6000, have great effects on the morphology and the particle size. The obvious absorption edge for ω-Bi₂O₃ powder is located at about 493 nm, which corresponds to the optical band gap energy of 2.73 eV.