Controlled fabrication and optical properties of 3D hierarchical ¦Á-Bi₂O₃ siamesed microflowers

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• 作者：Yi Wang ; Jingzhe Zhao ; Yanchao Zhu ; Bing Zhou ; Xu Zhao ; Zichen Wang
• 关键词：¦Á-Bi2O3 ; Hierarchical siamesed microflowers ; Two steps of self-assembly ; Microstructure
• 刊名：Colloids and Surfaces A: Physicochemical and Engineering Aspects
• 出版年：2013
• 出版时间：5 October, 2013
• 年：2013
• 卷：434
• 期：Complete
• 页码：296-302
• 全文大小：2418 K

文摘

Three dimensional (3D) hierarchical ¦Á-Bi₂O₃ siamesed microflowers have been synthesized by a glycerin-assisted hydrothermal method. The microflowers of 30 ¦Ìm were built up of oblique prism-like nanorobs, with mean width of 300 nm and thickness of 100 nm. In the hydrothermal process, hierarchical microstructures constructed by nanoribbons, ultrathin nanoflakes and oblique prism-like nanorobs can be found at different step of crystal growth. Morphology evolution of ¦Á-Bi₂O₃ was analyzed and the probable formation mechanism was proposed based on experimental results. The vibrational properties, optical absorption and photoluminescence (PL) characteristics of the sample were investigated.