Porous silver loaded on copper-based carrier in situ as well as preparation method and application of porous silver

Abstract

The invention provides in-situ loaded porous silver on a copper-based carrier as well as a preparation method and application of the in-situ loaded porous silver. The preparation method of the porous silver loaded on the copper-based carrier in situ comprises the following steps: dissolving silver nitrate and chlorobenzoic acid in water to prepare a mixed solution; and immersing the pretreated copper-based carrier into the mixed solution, reacting, washing and drying to obtain the porous silver loaded on the copper-based carrier in situ. According to the method, the porous silver can be rapidly and efficiently prepared, complex operation steps and reaction equipment are not needed, and large-scale production can be achieved. According to the method, the porous silver can be loaded on the copper-based carriers of different structures in situ, and the loss of the porous silver is reduced; and the porous silver loaded on the copper-based carrier in situ has excellent catalytic performance and SERS (Surface Enhanced Raman Scattering) performance.

Description

technical field [0001] The invention relates to porous silver supported in situ on a copper-based carrier, a preparation method and application thereof, and belongs to the technical field of metal materials. Background technique [0002] Porous silver has excellent physical and chemical properties, such as large specific surface area, low density, high porosity, excellent electrical and thermal conductivity, and is not easily oxidized. It has been widely used in catalysis, sensing, surface-enhanced Raman scattering, biological medical and other fields. At present, the commonly used preparation methods of porous silver mainly include template method, dealloying and physical sputtering method, but there are certain problems in the above methods, such as cumbersome steps and complex equipment, which make it difficult to realize large-scale production of porous silver. [0003] Chinese patent document CN104525937A discloses a porous silver micro-nano structure and a preparation...

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Problems solved by technology

However, the preparation process of this method is relatively complicated and requires a long synthesis process, and the prepared silver nano-basic units are easy to aggregate, thereby reducing its catalytic performance to a certain extent.

[0004] In the application process of porous silver, it is often necessary to load porous silver on the carrier twice to realize its catalytic performance; however, the loading process is complicated and easily causes the performance loss of the catalyst; therefore, it is urgent to develop an in-situ A synthetic method that supports porous silver and is simple to operate and easy to implement, reduces catalyst loss and improves the application performance of porous silver

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