WANG Yi.Controlled fabrication and growth mechanism of 1D rod-like bismuth oxide[J].Journal of Yanbian University,2014,40(01):42-44，74.
一维棒状氧化铋的控制合成与生长机制
- Title:
- Controlled fabrication and growth mechanism of 1D rod-like bismuth oxide
- Keywords:
- Bi2O3; one-step aqueous process; rod-like microstructure
- 分类号:
- N55
- 文献标志码:
- A
- 摘要:
- 以Bi(NO3)3·5H2O为原料,NaOH为沉淀剂,DESB(十二烷基乙氧基磺基甜菜碱)为控制剂,采用一步水相沉淀法,在温和条件下(70 ℃)制备了直径约为4 μm、长度为几十微米的棒状一维氧化铋.通过X射线衍射(XRD)、扫描电镜(SEM)、能量色散X射线(EDX)对其晶体结构、相组成、微观形貌及可能的生长机制进行了表征和分析.结果表明,所得两端呈尖角的棒状结构为高纯度的单斜相氧化铋,并且具有较好的结晶度.根据实验结果,推测定向附着(o
- Abstract:
- 1D rod-like Bi2O3 was synthesized by precipitating bismuth nitrate with sodium hydroxide under a mild one-step aqueous process in the presence of DESB(dodecyl ethoxy sulfobetaine). The rod-like Bi2O3 have better distribution with an average diameter of 4 μm and length of up to tens of micrometers. X-ray diffraction and energy-dispersive X-ray analysis(EDX)indicate that rod-like Bi2O3 with sharp end is monoclinic phase with high purity and crystallinity. A combined growth mechanism of oriented attachment followed by Ostwald ripening is speculated for the formation of rod-like Bi2O3 based on experimental results.
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备注/Memo
收稿日期: 2013-11-10作者简介: 王轶(1971—),女,副教授,研究方向为功能材料.