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Synthesis of composite powders composed of silver and carbon nanotubes by liquid-phase reduction method
Nano-Structures & Nano-Objects Pub Date : 2020-11-09 , DOI: 10.1016/j.nanoso.2020.100622
Maël Pontoreau , Benjamin Thomas , Emmanuel Le Guen , Christine Bourda , Nada Kraiem , Lisa Andrey , Jean-François Silvain

A successful synthesis of composite powders composed of both silver (Ag) particles and multi walled carbon nanotubes (MWCNTs) by liquid-phase reduction methods is reported. Based on previous work on electroless deposition of Ag on MWCNTs and the mixing technique called “modified molecular level mixing”, the novel procedure strongly controls the amount of individualized MWCNTs in the Ag/MWCNTs composite powders with a mass fraction of MWCNTs between 0 and 0.6 wt%.

The results show that temperature and the concentration of the reducing agent have a significant impact on the growth of the Ag particles while the MWCNTs concentration influences the nucleation rate of Ag particles during synthesis of Ag/MWCNTs composite powders. Thermogravimetric analysis of the powder synthesized also show a catalytic effect of Ag particles on the oxidation of MWCNTs.



中文翻译:

液相还原法合成银和碳纳米管组成的复合粉末

据报道,通过液相还原法成功合成了由银(Ag)颗粒和多壁碳纳米管(MWCNT)组成的复合粉末。基于先前在MWCNTs上进行化学镀银的工作和称为“改进分子水平混合”的混合技术,该新方法可有效控制MWCNTs的质量分数在0至0.6之间的Ag / MWCNTs复合粉末中单个MWCNTs的量。重量%。

结果表明,温度和还原剂的浓度对Ag颗粒的生长具有显着影响,而MWCNTs的浓度影响Ag / MWCNTs复合粉体合成过程中Ag颗粒的成核速率。合成粉末的热重分析也显示了Ag颗粒对MWCNT氧化的催化作用。

更新日期:2020-11-09
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