Method for rapidly preparing gold nanorod

A technology for preparing gold nanorods, which is applied in the field of nanomaterials, can solve the problems of long growth cycle, reduce reduction speed, and limit the application value of gold nanorods, and achieve the effects of less spherical particles, high yield, and shortened synthesis time
CN104209533AActive Publication Date: 2014-12-17SUZHOU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SUZHOU UNIV
Publication Date
2014-12-17

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Abstract

The invention discloses a method for rapidly preparing a gold nanorod, which belongs to the technical field of a nano material, and solves the problem that the existing gold nanorod seed induction growth method is long in consumed time. The method is characterized in that cationic surface active agent chloride quaternary ammonium salt is used as a protective agent, gold seeds which are obtained by reducing sodium borohydride through the reducing agent sodium oleate, ascorbic acid are added into a chloroauric acid solution under the assistant effect of ions and silver ions to obtain gold nanorods. According to the method, the synthesis of the gold nanorods can be completed in 15 minutes, so that not only can the synthesis time of the gold nanorods be greatly shortened and a material base be provided for the real application of the gold nanorods, but also the yield of the gold nanorods is high, and fewer spherical particles exist.
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Description

technical field

[0001] The invention relates to the technical field of nanometer materials, in particular to a method for rapidly preparing gold nanorods. Background technique

[0002] As a precious metal material, gold has very stable chemical properties. Gold nanorods not only inherit the properties of bulk materials, but also have many other properties due to their unique anisotropic structure. Generally speaking, gold nanorods have two surface plasmon resonance absorption peaks (Surface Plasmon Resonance, SPR), which are a transverse plasmon resonance absorption peak and a longitudinal plasmon resonance absorption peak, and the transverse plasmon resonance absorption peak is generally located at a wavelength of 520nm. , and the position of the longitudinal plasmon resonance absorption peak can be extended from the visible region to the near-infrared region according to the aspect ratio of gold nanorods, which means that the optical properties of gold nanorods are closel...

Claims

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