Flash light synthesis of noble metal nanoparticles for electrochemical applications: silver, gold, and their alloys
Flash light synthesis of noble metal nanoparticles for electrochemical applications: silver, gold, and their alloys
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DOI：
10.1007/s10008-020-04521-5
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发表时间：
2020-02-13
影响因子：
2.5
通讯作者：
Girault, Hubert H.
中科院分区：
文献类型：
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作者：
Costa Bassetto, Victor;Oliveira Silva, Wanderson;Girault, Hubert H.
贵金属纳米颗粒的合成（即，银和金）用于电化学应用已经主要使用湿合成化学方法或电化学沉积方法被广泛研究。在这项工作中，我们提出了一个单步闪光光化学方法合成贵金属纳米粒子（即，银、金和Au：Ag）的溶液中进行电化学应用。该方法基于氙闪光灯发出的强脉冲辐射，其诱导溶液中的金属阳离子还原以形成金属纳米颗粒。本发明的方法是基于金属前体盐的选择性光吸收与添加到溶液中的聚乙烯吡咯烷酮的分解相结合。这种方法可以称为闪光合成。
The synthesis of noble metal nanoparticles (i.e., silver and gold) for electrochemical applications has been widely studied using mainly wet synthesis chemical methods or electrochemical deposition methods. In this work, we propose a single-step flash photochemical method for synthesizing noble metal nanoparticles (i.e., silver, gold, and Au:Ag) in solution for electrochemical applications. The method is based on the intense pulsed radiation emitted from a xenon flashlamp, which induce the reduction of metal cations in solution to form metallic nanoparticles. The present method is based on the selective light absorption of the metal precursor salts combined with the decomposition of polyvinylpyrrolidone added to the solution. This approach can be termed as flash light synthesis.