Full-bloom flower-shaped gold nanoparticle and preparation method thereof

A gold nanoparticle and flower-shaped technology, applied in the field of nanomaterials, can solve the problems of restricting wide application and complicated steps, and achieve the effects of safe and simple operation, simple and mild preparation conditions, and mild reaction
CN103406549AActive Publication Date: 2013-11-27NANJING UNIV OF POSTS & TELECOMM
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
NANJING UNIV OF POSTS & TELECOMM
Publication Date
2013-11-27

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Abstract

The invention discloses full-bloom flower-shaped gold nanoparticle and a preparation method thereof. The preparation method comprises the following steps of: by adopting hexadecyl trimethyl ammonium chloride (CTAC) as a surfactant, reducing chloroauric acid (HAuCl4) by utilizing ascorbic acid (AA); and preparing the full-bloom shaped flower-form gold nanoparticle by one step without seeds by controlling the concentration of the hexadecyl trimethyl ammonium chloride (CTAC). Characterization results of a scanning electron microscope show that the prepared gold nanoparticle is shaped like a full-bloom flower; moreover, the product is uniform and the mono-dispersion is good; the ultraviolet-visible absorption spectrum shows that the surface plasmon resonance peak of the flower-form gold nanoparticle is in a near-infrared area; technical characterization results of surface enhanced raman scattering prove that the flower-form nanoparticle has better surface-enhanced performances.
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Description

technical field

[0001] The invention belongs to the field of nanometer materials, and relates to a shape-anisotropic gold nanoparticle and a preparation method thereof, in particular to a blooming flower-shaped gold nanoparticle and a preparation method thereof. Background technique

[0002] The controlled preparation of the size, shape and structure of noble metal (gold, silver) nanoparticles and the corresponding properties have always been a research hotspot and difficulty in materials science and related fields. In the past decade, the shape-controllable preparation of noble metal nanostructures has attracted extensive attention, because it can provide an effective way to tune the electrical, magnetic, optical, and catalytic properties of nanomaterials. The controllable synthesis of shape-anisotropic noble metal nanocrystals is an interesting and challenging work, because these shape-specific nanoparticles have special optical, electrical and catalytic properties, so the...

Claims

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