Porous silver micro-nano structure and shape and size controllable preparation method thereof

A technology of micro-nano structure and porous silver, which is applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of difficult separation, uncontrollable factors and multiple products, and achieve simple methods and accelerated catalysis Reactive, good permeability effect
CN104525937AInactive Publication Date: 2015-04-22JILIN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JILIN UNIV
Publication Date
2015-04-22
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a porous silver micro-nano structure and a shape and size controllable preparation method of the porous silver micro-nano structure, and belongs to the technical field of precious metal porous nano-crystalline structures. The overall appearance shape of the porous silver micro-nano structure is a hexagonal sandwich shape or a quadrilateral shape or a strip shape and is formed by stacking 30-50-nanometer silver basic composition units, and multiple pores are formed by stacking silver basic composition units. The preparation method includes the steps that sodium citrate, sodium carbonate and citric acid are dissolved in deionized water, a silver nitrate solution and a D-glucose solution are added in sequence, the mixture is stirred and sinks, and a precursor is obtained after centrifugal drying; the porous silver micro-nano structure is obtained after heat treatment is conducted on the precursor. The method is simple, environmentally friendly and controllable in shape and size; the prepared porous silver micro-nano structure is uniform in size distribution, large in specific surface area, good in permeability and higher in catalytic rate for p-nitrophenol, and has potential application in the precious metal catalytic aspect.
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Description

technical field

[0001] The invention belongs to the technical field of porous micro-nano structures of precious metals, and relates to a method for preparing high-quality micro-nano crystals with large specific surface area, high activity, good permeability and porous structure in a simple, green and environment-friendly manner and research on related catalytic properties. Background technique

[0002] For a long time, porous micro-nanostructures have been a hot topic in the field of scientific research. Due to their large specific surface area, relatively small density and good permeability, they are widely used in catalysis, sensors, drug delivery, and energy conversion and storage. Caused widespread concern. Many previous reports prepared porous noble metal micro-nanomaterials in the form of templates. Since the template is limited to the preparation of some porous thin layers or irregular shapes stacked by nanoparticles, and the post-processing of the template also incr...

Claims

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