Fast Synthesis of Stable Cubic Copper Nanocages in the Aqueous Phase
Fast Synthesis of Stable Cubic Copper Nanocages in the Aqueous Phase
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DOI：
10.1021/jp074550w
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发表时间：
2007-09
影响因子：
3.7
通讯作者：
Xiaodan Su;Jing-zhe Zhao;H. Bala;Yanchao Zhu;Ye Gao;Shanshan Ma;Zichen Wang
中科院分区：
文献类型：
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作者：
Xiaodan Su;Jing-zhe Zhao;H. Bala;Yanchao Zhu;Ye Gao;Shanshan Ma;Zichen Wang
我们在这里报告了一种快速的方法，通过湿化学还原过程中的高产率的立方铜纳米笼的合成。在80 °C的低温下，以油酸钠（SOA）为稳定剂，水相中Cu（II）还原为Cu（0）的反应在3 min内即可完成。透射电子显微镜（TEM）和场发射扫描电子显微镜（FESEM）的结果表明，所得立方Cu笼是边长为200 nm的Cu纳米颗粒的聚集体，内含的纳米颗粒尺寸约为20 nm。根据对Cu纳米结构形成机理的考察，我们认为该策略中形成的粗固体Cu 2 O立方体的还原中间体充当了自发的形状控制模板，Cu纳米结构的立方结构是由它们的形貌遗传演化而来的。正如我们所检测到的，这种立方体形态的Cu聚集体被保存在不同的反应时间，从3分钟到2小时;…
We report here a fast approach to the synthesis of cubic Cu nanocages in higher yield through a wet chemical reductive procedure. The performing reductive reactions from Cu(II) to Cu(0) in the aqueous phase can be finished in just 3 min at the low temperature of 80 °C in the presence of sodium oleate (SOA) as a stabilizer. Both transmission electron microscopy (TEM) and field-emission scanning electron microscopy (FESEM) results indicate that the resultant cubic Cu cages are aggregates of Cu nanoparticles with 200 nm in edge lengths and the inclusive nanoparticles are about 20 nm in size. According to the inspection of the Cu nanostructure-forming mechanism, we suggest that the reduction intermediate of roughly solid Cu2O cubes formed in this strategy served as a spontaneous shape-controlled template and the cubic structure of the Cu nanostructures was evolved by morphology heredity from them. As we detected, this cubic morphology of Cu aggregates is preserved at varied reaction times, from 3 min to 2 h; ...