Preparation method of thorn-like and petal-like rough surface gold-silver alloy nanomaterials

A gold-silver alloy and nano-material technology, which is applied in the field of preparation of gold-silver alloy nano-materials with thorn-like and petal-like rough surfaces, can solve the problems of complex preparation process, inconvenient large-scale preparation, and low controllability of shape, and achieve Low reaction temperature, convenient loading and modification of a large number of organic compounds, and simple and easy-to-operate equipment
CN106041119BInactive Publication Date: 2018-07-17XI AN JIAOTONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
XI AN JIAOTONG UNIV
Publication Date
2018-07-17
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a preparation method of a thorn-shaped or petal-shaped rough-surface gold-silver alloy nanometer material. The preparation method comprises the steps that gold nanoparticle seeds are prepared from a mixed solution of chloroauric acid and trisodium citrate; the gold nanoparticle seeds grow on the surfaces of gold nanoparticles through heterogeneous nucleation; and under the action of molecular synergistic adsorption of L-dopamine, stabilization of atomic clusters, reduction of gold ions and silver ions and underpotential deposition of silver atoms, the thorn-shaped or petal-shaped rough-surface gold-silver alloy nanometer material is prepared and formed. The preparation method is simple in process and effective; production cost can be lowered conveniently; the preparation method is suitable for large-scale production; and the prepared thorn-shaped or petal-shaped rough-surface gold-silver alloy nanometer material is of a unique bionic structure, large in specific surface area and capable of loading a great amount of active medicine and molecular dye. Therefore, the preparation method has wide application prospect in the fields such as SERS sensing, catalysis, diagnosis and treatment and adsorbing materials.
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Description

technical field

[0001] The invention relates to a preparation method of gold-silver alloy nanomaterials with thorn-like and petal-like rough surfaces. Background technique

[0002] Noble metal nanomaterials have attracted increasing attention due to their excellent properties in optics, electricity, catalysis, and sensing. Since scientists discovered that pyridine molecules adsorbed on the surface of rough silver electrodes have enhanced Raman scattering in the 1970s, silver nanomaterials have been widely used in preparation, modification, modification and Surface Enhanced Raman Scattering (SurfaceEnhanced Raman Scattering, SERS). developed rapidly. As a kind of noble metal nanomaterials with unique structure, thorn-like and petal-like have great potential in the fields of SERS sensing, catalysis, medical diagnosis and imaging due to their special hierarchical structure, large specific surface area, good catalytic and optical properties. Wide range of applications. Studie...

Claims

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