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Plasmon resonance of gold nanoparticles supported on Y-zeolite in the presence of various co-cations

机译:在各种共阳离子存在下负载在Y沸石上的金纳米颗粒的等离子体共振

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摘要

Gold nanoparticles supported on Y-zeolite were prepared using the [Au(NH_3)_4](NO_3)_3 complex as gold precursor. The differences in the formation of gold nanoparticles in the presence of various co-cations (Na, Cu, Ni or Fe) were discussed in this work. The shift in the plasmon peak observed in the UV-vis spectra for different sample compositions was linked with variation in Au nanoparticle size, as well as changes in the sample chemical composition under thermal treatment. Theoretical spectra for Au nanoparticles supported on modified zeolites were obtained applying an average field model. Qualitative comparison of the data with the theoretical spectra yields insight into the role of distinct co-cations in the system.
机译:使用[Au(NH_3)_4](NO_3)_3络合物作为金前体制备了负载在Y沸石上的金纳米颗粒。在这项工作中讨论了在各种共阳离子(Na,Cu,Ni或Fe)存在下金纳米颗粒形成的差异。对于不同样品组成,在紫外可见光谱中观察到的等离子体激元峰的移动与金纳米颗粒尺寸的变化以及热处理后样品化学组成的变化有关。应用平均场模型获得了负载在改性沸石上的金纳米颗粒的理论光谱。将数据与理论光谱进行定性比较,可以洞悉不同共阳离子在系统中的作用。

著录项

  • 来源
    《Applied Surface Science》 |2014年第1期|136-143|共8页
  • 作者单位

    Universidad Nacional Autonoma de Mexico, Centro de Nanociencias y Nanotecnologia, Km. 107 Carretera Tijuana a Ensenada, C.P. 22860 Ensenada, Baja California, Mexico;

    Universidad Nacional Autonoma de Mexico, Centro de Nanociencias y Nanotecnologia, Km. 107 Carretera Tijuana a Ensenada, C.P. 22860 Ensenada, Baja California, Mexico;

    Universidad Nacional Autonoma de Mexico, Centro de Nanociencias y Nanotecnologia, Km. 107 Carretera Tijuana a Ensenada, C.P. 22860 Ensenada, Baja California, Mexico, Departamento de Investigacion en Zeolitas, Universidad Autonoma de Puebla, Puebla 72570, Mexico;

    Universidad Nacional Autonoma de Mexico, Centro de Nanociencias y Nanotecnologia, Km. 107 Carretera Tijuana a Ensenada, C.P. 22860 Ensenada, Baja California, Mexico;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Gold nanoparticles; Plasmon resonance; Y-zeolite; Sodium, copper; Nickel; Iron;

    机译:金纳米粒子;等离子体共振;Y型沸石;钠;铜;镍;铁;

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