一个溶液相,为多晶SnO2纳米线的前体路径,可以在环境条件下用于气体传感
Yuliang Wang1, Xuchuan Jiang, Younan Xia
1Department of Chemistry, University of Washington, Seattle, Washington 98195, USA.
Journal of the American Chemical Society
|December 25, 2003
概括
研究人员开发了一种简单的基于溶液的方法,以创建统一的二氧化 (SnO2) 纳米线. 这些多孔的SnO2纳米线显示了增强的气体传感能力,可以合成其他金属氧化物.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 化学合成 化学合成
背景情况:
- 开发金属氧化物纳米结构的高效合成方法对于先进的应用至关重要.
- 二氧化 (SnO2) 由于其半导体特性,是气体传感的一个有希望的材料.
研究的目的:
- 描述一种简单的,基于溶液的前体方法,用于合成均的rutile SnO2纳米线.
- 研究合成的SnO2纳米线的结构性质和潜在应用.
主要方法:
- 在乙烯基甘醇中反流锡 (II) 氧酸盐二水合物 (SnC2O4·2H2O) 和聚 (乙烯基乙烯基利) .
- 使用X射线衍射 (XRD),里埃变换红外光谱 (FT-IR) 和热重力测量分析 (TGA) 的结构特征.
- 在500°C的空气中化前体纳米线,形成多晶SnO2.2.
主要成果:
- 统一的纳米线 (大约. 50纳米直径,长度高达30微米) 的鲁SnO2纳米晶体已经成功合成.
- 通过在同位素介质中聚合链状前体而形成的无同位素纳米结构.
- 化SnO2纳米线具有高度的孔隙性,并且在环境条件下在气体传感应用中表现出更好的灵敏度和可逆性.
结论:
- 开发的基于溶液的前体方法为统一的SnO2纳米线提供了一个简单的途径.
- 合成的多孔SnO2纳米线具有出色的气体传感性能.
- 合成方法适用于生产其他金属氧化物纳米线,包括In2O3和TiO2.2.
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