Photochemical preparation of Au/Fe<sub>3</sub>O<sub>4</sub> composites

GONG Peijun; ZHAO Sufang; HONG Jun; YAO Side; YU Jiahui; LI Liangchao

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Photochemical preparation of Au/Fe₃O₄ composites

更新时间：2023-03-30

- Photochemical preparation of Au/Fe₃O₄ composites
- Journal of Radiation Research and Radiation Processing Vol. 26, Issue 2, Pages: 108-111(2008)
- 作者机构：
  
  1.浙江师范大学化学与生命科学学院　物理化学研究所　金华　321004
  2.中国科学院上海应用物理研究所　上海　201800
  3.华东师范大学新药创制先进技术研究院　上海　200062
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GONG Peijun, ZHAO Sufang, HONG Jun, et al. Photochemical preparation of Au/Fe₃O₄ composites. [J]. Journal of Radiation Research and Radiation Processing 26(2):108-111(2008)
DOI：

GONG Peijun, ZHAO Sufang, HONG Jun, et al. Photochemical preparation of Au/Fe₃O₄ composites. [J]. Journal of Radiation Research and Radiation Processing 26(2):108-111(2008) DOI：

摘要

用紫外光辐照含有纳米Fe,3,O,4,磁流体的氯金酸和聚乙烯醇的水溶液，制备了Au/Fe,3,O,4,磁性复合粒子，并用紫外-可见光谱、X射线衍射和透射电镜对其进行了表征。磁性复合粒子中Au纳米粒子具有面心立方结构，其等离子共振吸收峰分布较窄，说明金纳米粒子的粒径分布较均匀。TEM表明该复合粒子具有团簇状结构，由许多Au和Fe,3,O纳米粒子构成，尺寸介于70～230 nm范围。对照实验表明聚乙烯醇是Au纳米粒子与Fe,3,O,4,之间复合的必需媒介，据此提出了生成团簇状Au/ Fe,3,O,4,磁性复合粒子的可能机制。

Abstract

Au/Fe,3,O,4, composites were formed by irradiating the aqueous solution of HAuCl,4, containing poly(vinyl alcohol) (PVA) with UV light at a wavelength ,λ,=254 nm in the presence of Fe,3,O,4, nanoparticles. The properties of the as-prepared composites were characterized by means of ultraviolet spectra (UV-vis), X-ray diffraction (XRD), and transmission electron microscopy (TEM), respectively. XRD pattern confirmed the face-centered cubic phase of Au nanoparticles in the composites. The surface plasmon resonance band of the sample was rather narrow, which indicated a relatively narrow size distribution of Au nanoparticles. TEM revealed that Au/Fe,3,O,4, composites with a size range of 70~230 nm had cluster structure, composed of a number of Au and Fe,3,O,4, nanoparticles. Furthermore, it turned out that PVA was necessary for constructing the composites. A possible mechanism was proposed for the formation of Au/Fe,3,O,4, composites.

关键词

金磁复合粒子紫外辐照团簇结构聚乙烯醇

Keywords

Au-contained magnetic compositeUV irradiationCluster structurePoly(vinyl alcohol)

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Photochemical preparation of Au/Fe3O4 composites

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摘要

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Photochemical preparation of Au/Fe₃O₄ composites