Method for preparing Nano tube of titanate

Abstract

This invention discloses a method for preparing titanate nanotubes. The method comprises: uniformly mixing nitrate and power of sodium titanate nanotubes at a mol ratio of (5-100):1, performing melt-reaction at 50-450 deg.C for 3-48 h, cooling, washing to remove unreacted nitrate, and drying to obtain titanate nanotubes. The nitrate is lithium nitrate, and drying to obtain titanate nanotubes. The nitrate is lithium nitrate, potassium nitrate, rubidium nitrate, cesium nitrate, silver nitrate, nickel nitrate, thallium nitrate, copper nitrate, zinc nitrate or cobalt nitrate. The precursor of sodium titanate nanotubes is prepared by: reacting titanium dioxide, metatitanic acid or titanate ester in 20-80 wt. % NaOH aqueous solution at 100-140 deg.C for 12-72 h, washing with water, filtering and drying. This invention can prepare titanate nanotubes with large specific surface area by melt-exchange method.

Description

technical field

[0001] The invention relates to a new method for preparing titanates with various nanotube structures by using nanotube sodium titanate as a precursor-melting exchange method. Background technique

[0002] Titanates have attracted much attention due to their wide range of uses and special properties. For example, barium titanate is a good ferroelectric material and dielectric, potassium titanate fiber can be used as ion exchange material, dielectric material, friction material, reinforcement material, etc., and lithium titanate is a new generation of lithium ion Electrode materials for batteries. In recent years, with the development of nanotechnology, titanates with one-dimensional nanostructures have received widespread attention. Compared with micron-sized titanate materials, they have a large specific surface area, so they are used as lithium battery electrode materials, catalysts or catalysts. There is great potential for development in the fields of c...

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