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首页> 外文期刊>RSC Advances >Green synthesis of Au nanoparticles using an aqueous extract of Stachys lavandulifolia and their catalytic performance for alkyne/aldehyde/amine A(3) coupling reactions
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Green synthesis of Au nanoparticles using an aqueous extract of Stachys lavandulifolia and their catalytic performance for alkyne/aldehyde/amine A(3) coupling reactions

机译：使用Stachys Lavandulifolia水提取物的Au纳米粒子的绿色合成及其对炔烃/醛/胺A（3）偶联反应的催化性能

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摘要

High reaction rate and easy availability make green synthesis of metal nanoparticles noticeable. In the present study, gold nanoparticles with wide applications in different fields were synthesized by an ecofriendly method at room temperature using Stachys lavandulifolia extract as the reducing agent. Properties of the synthesized gold nanoparticles (GNP) were identified by different analytical techniques including: UV-Vis absorption spectroscopy verified presence of Au NPs in the solution while functional groups of its extract and synthesized Au NPs were determined by FT-IR. Its crystalline analysis with a fcc plane was verified by X-ray diffraction (XRD) and energy dispersive spectroscopy (EDS) determined elements in the sample. Surface morphology, diverse shapes and sizes of the Au NPs were shown by scanning electron microscopy (SEM), atomic force microscopy (AFM), and transmission electron microscopy (TEM). Beginning and end destruction temperatures of the Au/S. lavandulifolia NPs were determined by thermal gravimetric analysis (TGA). The Au nanoparticles were capped with extracts, preventing them from oxidation and agglomeration and were used as an efficient heterogeneous nanocatalyst for a three-component reaction of amines, aldehydes, and alkynes (A(3) coupling). A diverse range of propargylamines were obtained in good yields. Furthermore, the separation and recycling of Au/S. lavandulifolia NPs was very simple, effective, and economical.
机译：高反应速率和易于可用性使得金属纳米颗粒的绿色合成显着。在本研究中，使用STACHYS Lavandulifolia提取物作为还原剂，通过Ecofriendly方法通过Ecofriendliend方法合成不同领域的金纳米颗粒。通过不同的分析技术鉴定了合成的金纳米颗粒（GNP）的性质，包括：UV-Vis吸收光谱验证溶液中Au nP的存在，而通过FT-IR测定其提取物和合成的Au NP的官能团。通过X射线衍射（XRD）和能量分散光谱（EDS）在样品中确定其具有FCC平面的晶体分析。通过扫描电子显微镜（SEM），原子力显微镜（AFM）和透射电子显微镜（TEM）显示表面形态，不同形状和尺寸的AU NPS。 Au / s的开始和结束损坏温度。 Lavandulifolia NPS由热重量分析（TGA）测定。将Au纳米颗粒用萃取物封端，防止它们免于氧化和附聚，并用作胺，醛和炔胺（A（3）偶联的三分组分反应的有效的异质纳米催化剂。以良好的产率获得多种丙胺。此外，Au / s的分离和再循环。 Lavandulifolia NPS非常简单，有效，经济。

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  • 来源
    《RSC Advances》 |2018年第67期|共10页
  • 作者

    Veisi Hojat; Farokhi Maliheh; Hamelian Mona; Hemmati Saba;

  • 作者单位

    Payame Noor Univ Dept Chem Tehran Iran;

    Payame Noor Univ Dept Chem Tehran Iran;

    Kermanshah Univ Med Sci Res Ctr Oils &

    Fats Kermanshah Iran;

    Payame Noor Univ Dept Chem Tehran Iran;

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  • 正文语种 eng
  • 中图分类 化学;
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