Method for preparing nano/micron gold hierarchical structure material

A technique for preparing gold with a hierarchical structure, which is applied in the field of preparing nano/micro-scale gold hierarchical structure materials, can solve the problems of low yield, complicated preparation process, and poor monodispersity, and achieve high yield, simple operation, and stable shape Effect
CN102233434AInactive Publication Date: 2011-11-09INST OF CHEM CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
INST OF CHEM CHINESE ACAD OF SCI
Publication Date
2011-11-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for preparing a gold hierarchical structure material. In the method, the nano / micron gold hierarchical structure material is prepared by reducing chloroauric acid at normal temperature, wherein a 'dendritic' surfactant C18N3 serves as a template and protective agent; and ascorbic acid serves as a reducing agent. Bubbles formed by the surfactant C18N3 serve as the template; and a C18N3 protected stable gold nano hierarchical structure is obtained through reduction by using the ascorbic acid. Compared with the conventional method, the method is simple and low incost; and the hierarchical structure prepared by the method has high monodispersity, controllable appearance and the like. The nano / micron gold hierarchical structures with different appearances can be obtained by simply adjusting the amount of the surfactant, the chloroauric acid and the ascorbic acid, and comprise three-dimensional gold nanostructures such as a gold nanocrystal with a pluralityof protrusions on the surface, nearly spherical hollow nanoparticles, a meatball-shaped structure, a spherical structure with rodlike protrusions on the surface, a nano / micron spherical structure with sheet-like surface and the like.
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Description

technical field

[0001] The invention relates to a method for preparing a nano / micro-level gold hierarchical structure material. Background technique

[0002] In recent years, due to the unique properties and broad potential application prospects of noble metal micro- and nano-materials in optics, electricity, acoustics, magnetism, and mechanics, the synthesis and preparation of micro-nano noble metals has attracted extensive attention. Nano-hierarchical structure is a new type of nano-structure material that has emerged in recent years. Due to the coupling and synergistic effects of multi-level, multi-dimensional, and multi-component, hierarchical structure materials have undoubtedly become the most powerful carrier to meet the requirements of material development. In a broad sense, hierarchical structure materials include polyhedrons with special structures (such as multipods, stars, etc.), two-dimensional and three-dimensional superarrangements of zero-dimensional or one-d...

Claims

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