Boron nitride nanotubes (BNTS) are a new type of nanomaterial with unique structure and properties, which are widely used in materials science, electronics, optics and other fields. According to their structure and properties, boron nitride nanotube products can be divided into many types.

First, boron nitride nanotubes can be classified according to their diameter. At present, boron nitride nanotubes with diameters ranging from tens to hundreds of nanometers have been prepared, and different diameters of boron nitride nanotubes have different properties and applications. Larger diameter boron nitride nanotubes usually have better mechanical and conductive properties, which is suitable for the preparation of nanocomposites and conductive materials. The smaller diameter boron nitride nanotubes have higher specific surface area and quantum size effect, and can be used to prepare high performance materials such as sensors and catalysts.

Secondly, boron nitride nanotubes can also be classified according to their different structures. At present, various forms of boron nitride nanotubes have been found, including single-walled boron nitride nanotubes, multi-walled boron nitride nanotubes, nano-strip boron nitride nanotubes, etc. Boron nitride nanotubes with different structures have different advantages and application fields. For example, single wall boron nitride nanotubes have large specific surface area and strong quantum size effect, which can be used to prepare high-performance sensors and catalysts. The multi-wall boron nitride nanotubes have good mechanical and conductive properties and are suitable for the preparation of high strength nanocomposites and conductive materials.

In addition, boron nitride nanotubes can be classified according to their function. According to the theoretical calculation and experimental results, boron nitride nanotubes can have special functions such as embedding metal atoms and doping impurity atoms. For example, boron nitride nanotubes doped with nitrogen atoms can be used to prepare high-performance electrochemical sensors and electrocatalysts; Boron nitride nanotubes embedded with iron atoms can be used to prepare high performance catalysts and material adsorption materials.

In summary, boron nitride nanotube products can be classified according to their characteristics such as diameter, structure and function. Different types of boron nitride nanotubes have important application prospects in materials science, electronics, optics and other fields, providing a rich choice for scientific research and industrial production. With the continuous development and improvement of boron nitride nanotube technology, it is believed that more new boron nitride nanotube products will come out and make greater contributions to the development and progress of human society.