High-dispersity Prussian blue nano particle/high-crystalline carbon composite material and preparation method thereof

Abstract

The invention discloses a high-dispersity Prussian blue nano particle / high-crystalline carbon composite material and a preparation method thereof. The preparation method comprises the following steps: dissolving iron salt in acetone, adding solid sodium hydroxide, uniformly mixing, and standing for reaction to obtain iron-containing carbon quantum dots; and roasting the iron-containing carbon quantum dots and a nitrogen-containing organic micromolecular compound in a protective atmosphere, and washing and drying the roasted product to obtain the high-dispersity Prussian blue nano particle / high-crystalline carbon composite material. The Prussian blue nano particles and the three-dimensional carbon nano flowers in the composite material are compounded in-situ, the Prussian blue nano particles are uniformly dispersed and firmly embedded on the three-dimensional carbon nano flowers, the Prussian blue nano particles are good in stability and not prone to falling off, the crystallinity of the carbon nano flowers with the three-dimensional structure is high, better conductivity can be provided, the method is simple in preparation process, low in waste liquid discharge amount and low in cost, and meets industrial production requirements.

Description

technical field [0001] The invention relates to a Prussian blue / carbon composite material, in particular to a highly dispersible Prussian blue nano particle / high crystalline carbon composite material and a preparation method thereof, belonging to the technical field of new materials. Background technique [0002] Prussian blue is an octahedral coordination compound with the chemical formula Fe 4 [Fe(CN) 6 ] 3 , whose basic structure is based on a three-dimensional crystalline network of alternating ferrous and ferric ions on cubic lattice positions, possesses unique optical, electrical, and magnetic properties. Since the accidental discovery by the German chemist Diesbach in the early 18th century, Prussian blue was first used as a dye and pigment, and subsequent research, especially in recent years, has found that Prussian blue and its derivatives / similars are used in sewage treatment, seawater desalination, biosensing , catalysis, electrochemical energy storage, phototh...

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Problems solved by technology

[0004] In view of the fact that the Prussian blue / carbon composite material in the prior art has a large amount of waste liquid discharge during the preparation process, which pollutes the environment, and the prepared Prussian blue is poorly combined with the carbon material, resulting in the easy aggregation and shedding of nano-scale Prussian blue particles, and Carbon materials generally have relatively low crystallinity and other defects

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