通过反电偶合金化防止铜纳米颗粒的有氧氧化：金与银的比较。
Prevention of aerobic oxidation of copper nanoparticles by anti-galvanic alloying: gold versus silver.
作者信息
Liu Xiang, Ruiz Jaime, Astruc Didier
机构信息
ISM, UMR CNRS No. 5255, Univ. Bordeaux, 33405 Talence Cedex, France.
出版信息
Chem Commun (Camb). 2017 Oct 18;53(81):11134-11137. doi: 10.1039/c7cc05129h. Epub 2017 Aug 29.
Preservation from easy aerobic Cu(0) oxidation in Cu nanoparticles (NPs) is of interest for electronic, sensing, optical and catalytic properties. An anti-galvanic (AG) method is presented here for this purpose. Remarkably, alloying CuNPs with AuNPs or AgNPs followed by exposure to air only leads to Cu(0) oxidation to Cu(i) in AgCu alloyed NPs, whereas Cu(0) is not oxidized in AuCu alloyed NPs in which Au(i) forms. This result is also verified by "click" catalysis experiments.
在铜纳米颗粒（NPs）中防止易发生的有氧铜（0）氧化对于电子、传感、光学和催化性能而言具有重要意义。为此，本文提出了一种反电偶（AG）方法。值得注意的是，将铜纳米颗粒与金纳米颗粒或银纳米颗粒合金化，随后暴露于空气中，这只会导致银铜合金化纳米颗粒中的铜（0）氧化为铜（I），而在形成金（I）的金铜合金化纳米颗粒中，铜（0）不会被氧化。“点击”催化实验也验证了这一结果。
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