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Application of electrospinning technology in catalyst field

Views: 99 Author: Site Editor Publish Time: 2024-10-22 Origin: Site

First, what is a catalyst?

A catalyst is a substance that accelerates the rate of a chemical reaction without being consumed by the reaction. The catalyst promotes the chemical reaction by reducing the activation energy of the reaction. Under the action of the catalyst, the reactants can be more easily converted into products, thus increasing the reaction rate. Catalysts can participate in various chemical reactions, including oxidation, reduction, acid-base neutralization, etc. In industrial production and laboratory research, catalysts are widely used to improve reaction efficiency, reduce energy consumption and reduce by-product generation.

catalyst

Second, what are the requirements for materials?

The requirements for materials depend on the specific application field and use environment, but in general, the requirements for materials include the following aspects:

1. Chemical stability: the material needs to have good chemical stability, can maintain its performance in a specific chemical environment, not easy to corrosion or chemical reactions.

2. Processing performance: the material needs to have good processing performance, including plasticity, machinability, weldability, etc., in order to prepare products of various shapes and structures.

3. Environmental adaptability: the material needs to be able to adapt to the specific use environment, including high temperature resistance, low temperature resistance, corrosion resistance, wear resistance and other characteristics.

In general, the requirements for materials are multi-faceted, and it is necessary to consider the physical, chemical, processing and other properties of materials, as well as their adaptability and sustainability in specific application fields.

Third, what are the technologies for preparing nanofiber catalysts?

There are many methods to prepare nanofiber catalysts, such as vapor deposition, sol-gel and electrospinning. Among them, the nanofibers prepared by electrospinning technology can effectively improve the utilization rate of catalysts because of their high specific surface area and stable pore structure.

technologies for preparing nanofiber catalysts

Fourth, the application of electrostatic spinning nanofibers in the catalyst field

1. Electrospinning nanofiber electrocatalyst for water decomposition

Electrospun nanofibers have become one of the most promising catalysts for electrocatalytic water cracking due to their simple preparation, unique one-dimensional characteristics, easy to control composition, morphology and electronic structure. In this paper, the basic principles of electrospun nanofibers (including bead fiber, ribbon fiber, porous fiber, hollow fiber and bonded fiber, etc.), hydrogen evolution reaction, oxygen evolution reaction and the basic principles of integral water decomposition are introduced. By giving examples of different electrospun nanofibers, the latest progress in electrocatalytic water decomposition is reviewed.

Electrospinning nanofiber electrocatalyst is used for water decomposition

https://doi.org/10.1016/j.cej.2021.131133

2. Electrospinning inorganic nanofiber electrocatalyst for energy batteries

Because of the advantages of electrospinning, such as large surface area, short charge transport path and strong chemical stability, electrospinning nanofiber catalysts have received great attention in fuel cells and metal-air batteries. In this paper, the latest development of noble-free electrocatalysts prepared by electrospinning is reviewed. Secondly, other types of electrospun nanofibers using oxides, nitrides and carbides as electrocatalysts or their hybrid materials are also discussed. Finally, the development prospect and possible research direction of NFS-based oxygen electrocatalysts for electrospinning are prospected.

Electrospinning inorganic nanofiber electrocatalysts for energy batteries