A kind of preparation method of titanium dioxide@silver spherical composite material and its application

Abstract

The invention belongs to the technical field of composite materials, and in particular relates to a preparation method and application of a titanium dioxide@silver spherical composite material. The preparation method is realized by the following steps: dissolving n-butyl titanate TG in deionized water to obtain an aqueous solution of TG, stirring, adding mercaptoethanol-arginine-aqueous solution dropwise at the same time, and continuing to stir to obtain a precursor solution for later use; Add silver nitrate and ammonia water to the bulk solution, stir at room temperature, centrifuge the precipitate, dissolve it in an equal volume of deionized water, add glucose, stir, centrifuge, wash, and dry, and place the dried intermediate in a tube furnace. After calcination, TiO2@Ag composites were obtained. The composite material prepared by the invention has a controllable size, the Ag nanoparticles are uniformly coated on the surface of the TiO2 ball, and has excellent electrochemical performance and excellent antibacterial performance at the same time; the preparation method provided by the invention is simple and effective, and can realize large-scale Factory production.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a preparation method and application of a titanium dioxide@silver spherical composite material. Background technique [0002] The demand for rechargeable batteries is increasing due to large-scale applications such as stationary electrical storage and electric vehicles. Lithium-ion batteries have the advantages of long cycle life and high energy density, and are considered as the most promising candidate devices. However, if the large-scale production of LIBs is achieved in the near future, the limited global lithium reserves may be depleted, thus, due to the low cost of sodium sources and high natural abundance, Na-ion batteries serve as an alternative to Li-ion batteries It has attracted the attention of more and more researchers. However, because of the larger radius of Na ions and the higher redox potential than Li, large interstitial spaces within t...

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Problems solved by technology

[0003] Guo Lixue et al disclosed that the Ag@TiO2 nanoparticle plasmon effect enhances the performance of perovskite solar energy thin film batteries. The nano-silver particles are used as the core layer, and TiO2 is used as the shell layer to cover the surface of the silver particles. The prepared material has the shape of The appearance is irregular, and the performance needs to be further improved

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