Synthesis of small silver nanocubes in a hydrophobic solvent by introducing oxidative etching with Fe(III) species
Synthesis of small silver nanocubes in a hydrophobic solvent by introducing oxidative etching with Fe(III) species
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DOI：
10.1039/c0jm00187b
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发表时间：
2010-01-01
影响因子：
--
通讯作者：
Xia, Younan
中科院分区：
文献类型：
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作者：
Ma, Yanyun;Li, Weiyang;Xia, Younan
氧化蚀刻的作用，在贵金属纳米晶体的合成与亲水性溶剂（特别是乙二醇）已在我们以前的工作进行了探讨。在本文中，我们证明了氧化蚀刻的机制可以扩展到在疏水性溶剂，如异戊基醚的单晶银纳米晶体的合成。在这种情况下，必须将FeCl 3或Fe（acac）（3）形式的Fe（III）物质引入疏水体系中作为有效的蚀刻剂。最终产物含有单晶Ag纳米立方体（略微截短），其边长小至类似于13.5 nm，这是使用亲水系统难以实现的尺寸。
The role of oxidative etching in the synthesis of noble-metal nanocrystals with a hydrophilic solvent (in particular, ethylene glycol) has been explored in our previous work. In this paper, we demonstrate that the mechanism of oxidative etching could be extended to the synthesis of single-crystal Ag nanocrystals in a hydrophobic solvent such as isoamyl ether. In this case, Fe(III) species in the form of FeCl3 or Fe(acac)(3) had to be introduced into the hydrophobic system as an effective etching agent. The final product contained single-crystal Ag nanocubes (slightly truncated) with an edge length as small as similar to 13.5 nm, a size that has been difficult to achieve using a hydrophilic system.