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易于合成由树突性聚合物稳定的氧化纳米粒子

Venkateswarlu Juttukonda¹, Robert L Paddock, Jeffery E Raymond

¹Department of Chemistry, Central Michigan University, Mount Pleasant, 48859, USA.

Journal of the American Chemical Society

|January 13, 2006

概括

研究人员利用二氧化碳和树突性聚合物合成了锡 (IV) 氧化物纳米粒子. 这种新的方法控制了纳米粒子的大小,为金属氧化物合成提供了一条新的途径.

科学领域:

材料科学材料科学材料科学
纳米技术纳米技术
无机化学无机化学

背景情况:

树突聚合物为纳米粒子合成提供独特的宿主-客户能力.
对金属氧化物纳米颗粒的受控合成对于先进的应用至关重要.
二氧化碳通常被认为是废物,但可以作为反应性气体利用.

研究的目的:

使用二氧化碳作为反应气体合成锡 (IV) 氧化物 (SnO2) 纳米粒子.
研究树突型聚合物架构在控制纳米粒子大小中的作用.
建立一种使用CO2进行金属氧化物纳米粒子合成的新方法.

主要方法:

氧化纳米粒子通过二氧化碳与酸离子的反应来合成.
使用树突聚合物,包括PAMAM,PPI和聚乙烯胺) 超分支聚合物固定了斯坦离子.
纳米颗粒大小的特征是基于使用的树突性聚合物宿主类型.

主要成果:

合成产生了控制直径的 (IV) 氧化物纳米颗粒.
使用PAMAM和PPI树突体宿主产生了2.5-3纳米纳米粒子.
聚乙胺) 超分支的聚合物宿主产生了3-3.5nm的纳米粒子.
这项研究代表了使用树突结构的SnO2纳米颗粒生长的首个报告.

结论:

二氧化碳可以有效地作为反应气体用于金属氧化物纳米颗粒的受控合成.
树突性聚合物架构在确定产生的锡 (IV) 氧化物纳米颗粒的大小方面发挥着重要作用.
这种新的方法为纳米材料的绿色合成提供了新的途径.

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