Polyol synthesis and chemical conversion of Cu2O nanospheres
Polyol synthesis and chemical conversion of Cu2O nanospheres
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Cu2O纳米球的多元醇合成与化学转化
DOI：
10.1007/s12274-012-0212-7
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发表时间：
2012-05-01
期刊：
影响因子：
9.9
通讯作者：
Li, Yadong
中科院分区：
文献类型：
--
作者：
Chen, Wei;Li, Lingling;Li, Yadong
多元醇合成法是一种合成贵金属纳米晶的有效方法，已被用于制备Cu 2 O纳米球。通过该方法，可以通过调节Cu（NO3）（2）和/或聚（乙烯基吡咯烷酮）的浓度来容易地调整产物的粒度。结果表明，该反应的主要驱动力是乙二醇（EG）与NO（3）（-）之间的氧化还原电位差，而不是EG与Cu ~（2+）之间的氧化还原电位差。将所得的Cu 2 O纳米球用作固体前体，用于通过合适的化学转化产生具有不同硫化度的硫化铜以及CuO的中空纳米球。柯肯德尔效应决定了最终的中空结构。本文的研究结果为拓宽多元醇合成路线的应用范围提供了一个很好的范例，并可为其他氧化物材料的合成提供思路。
Polyol synthesis route, which is a popular and effective way of synthesizing noble metal nanocrystals, has been employed for the fabrication of Cu2O nanospheres. With this method, the particle size of the product can be readily tailored by tuning the concentration of Cu(NO3)(2) and/or poly(vinyl pyrrolidone). It has been demonstrated that the main driving force of this reaction is the difference in redox potentials between ethylene glycol (EG) and NO (3) (-) , and not that between those of EG and Cu2+. The resulting Cu2O nanospheres were used as a solid precursor for generating hollow nanospheres of copper sulfide with different sulfiding degrees, as well as CuO, via suitable chemical conversions. The Kirkendall effect determined the final hollow structure. The results in this paper provide a good example of the broadening of the scope of application of polyol synthesis route and may supply a thinking clue for the synthesis of other oxide materials.